Refactor entites (#86)

api/src/main/java/io/github/wulkanowy/api/Diary.java

@@ -4,8 +4,6 @@ public class Diary implements ParamItem {
 
     private String id = "";
 
-    private String studentId = "";
-
     private String name = "";
 
     private boolean current = false;
@@ -19,16 +17,6 @@ public class Diary implements ParamItem {
         return this;
     }
 
-    public String getStudentId() {
-        return studentId;
-    }
-
-    @Override
-    public Diary setStudentId(String studentId) {
-        this.studentId = studentId;
-        return this;
-    }
-
     public String getName() {
         return name;
     }

api/src/main/java/io/github/wulkanowy/api/ParamItem.java

@@ -4,8 +4,6 @@ interface ParamItem {
 
     ParamItem setId(String id);
 
-    ParamItem setStudentId(String id);
-
     ParamItem setName(String name);
 
     ParamItem setCurrent(boolean isCurrent);

api/src/main/java/io/github/wulkanowy/api/Semester.java

@@ -4,8 +4,6 @@ public class Semester implements ParamItem {
 
     private String id = "";
 
-    private String studentId = "";
-
     private String name = "";
 
     private boolean current = false;
@@ -19,16 +17,6 @@ public class Semester implements ParamItem {
         return this;
     }
 
-    public String getStudentId() {
-        return studentId;
-    }
-
-    @Override
-    public Semester setStudentId(String studentId) {
-        this.studentId = studentId;
-        return this;
-    }
-
     public String getName() {
         return name;
     }

api/src/main/java/io/github/wulkanowy/api/Student.java

@@ -17,15 +17,6 @@ public class Student implements ParamItem {
         return this;
     }
 
-    public String getStudentId() {
-        return getId();
-    }
-
-    @Override
-    public Student setStudentId(String studentId) {
-        return setId(studentId);
-    }
-
     public String getName() {
         return name;
     }

api/src/main/java/io/github/wulkanowy/api/StudentAndParent.java

@@ -140,8 +140,8 @@ public class StudentAndParent implements SnP {
 
         for (Element e : semesterOptions) {
             Semester semester = new Semester()
-                    .setId(e.text())
+                    .setId(e.attr("value"))
-                    .setName(e.attr("value"));
+                    .setName(e.text());
 
             if (isCurrent(e)) {
                 semester.setCurrent(true);
@@ -167,9 +167,6 @@ public class StudentAndParent implements SnP {
                 if (isCurrent(e)) {
                     item.setCurrent(true);
                 }
-                if (item instanceof Diary) {
-                    item.setStudentId(getStudentID());
-                }
 
                 list.add((T) item);
             } catch (Exception ex) {

api/src/main/java/io/github/wulkanowy/api/grades/Grade.java

@@ -18,8 +18,6 @@ public class Grade {
 
     private String teacher = "";
 
-    private String semester = "";
-
     public String getSubject() {
         return subject;
     }
@@ -99,14 +97,4 @@ public class Grade {
 
         return this;
     }
-
-    public String getSemester() {
-        return semester;
-    }
-
-    public Grade setSemester(String semester) {
-        this.semester = semester;
-
-        return this;
-    }
 }

api/src/main/java/io/github/wulkanowy/api/grades/GradesList.java

@@ -14,7 +14,6 @@ import java.util.Locale;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
-import io.github.wulkanowy.api.Semester;
 import io.github.wulkanowy.api.SnP;
 import io.github.wulkanowy.api.VulcanException;
 
@@ -42,24 +41,18 @@ public class GradesList {
         Document gradesPage = snp.getSnPPageDocument(getGradesPageUrl() + semester);
         Elements gradesRows = gradesPage.select(".ocenySzczegoly-table > tbody > tr");
 
-        if ("".equals(semester)) {
-            List<Semester> semesterList = snp.getSemesters(gradesPage);
-            Semester currentSemester = snp.getCurrent(semesterList);
-            semester = currentSemester.getName();
-        }
-
         for (Element row : gradesRows) {
             if ("Brak ocen".equals(row.select("td:nth-child(2)").text())) {
                 continue;
             }
 
-            grades.add(getGrade(row, semester));
+            grades.add(getGrade(row));
         }
 
         return grades;
     }
 
-    private Grade getGrade(Element row, String semester) throws ParseException {
+    private Grade getGrade(Element row) throws ParseException {
         String descriptions = row.select("td:nth-child(3)").text();
 
         String symbol = descriptions.split(", ")[0];
@@ -75,8 +68,7 @@ public class GradesList {
                 .setDescription(description)
                 .setWeight(row.select("td:nth-child(4)").text())
                 .setDate(date)
-                .setTeacher(row.select("td:nth-child(6)").text())
+                .setTeacher(row.select("td:nth-child(6)").text());
-                .setSemester(semester);
     }
 
     private String getColor(String styleAttr) {

api/src/main/java/io/github/wulkanowy/api/grades/SubjectsList.java

@@ -13,16 +13,21 @@ import io.github.wulkanowy.api.VulcanException;
 
 public class SubjectsList {
 
-    private static final String SUBJECTS_PAGE_URL = "Oceny/Wszystkie?details=1";
+    private static final String SUBJECTS_PAGE_URL = "Oceny/Wszystkie?details=1&okres=";
 
-    private SnP snp = null;
+    private SnP snp;
 
     public SubjectsList(SnP snp) {
         this.snp = snp;
     }
 
+
     public List<Subject> getAll() throws IOException, VulcanException {
-        Document subjectPage = snp.getSnPPageDocument(SUBJECTS_PAGE_URL);
+        return getAll("");
+    }
+
+    public List<Subject> getAll(String semester) throws IOException, VulcanException {
+        Document subjectPage = snp.getSnPPageDocument(SUBJECTS_PAGE_URL + semester);
 
         Elements rows = subjectPage.select(".ocenyZwykle-table > tbody > tr");
 

api/src/test/java/io/github/wulkanowy/api/StudentAndParentTest.java

@@ -96,12 +96,12 @@ public class StudentAndParentTest {
 
         Assert.assertEquals(2, semesters.size());
 
-        Assert.assertEquals("1", semesters.get(0).getId());
+        Assert.assertEquals("1", semesters.get(0).getName());
-        Assert.assertEquals("1234", semesters.get(0).getName());
+        Assert.assertEquals("1234", semesters.get(0).getId());
         Assert.assertFalse(semesters.get(0).isCurrent());
 
-        Assert.assertEquals("2", semesters.get(1).getId());
+        Assert.assertEquals("2", semesters.get(1).getName());
-        Assert.assertEquals("1235", semesters.get(1).getName());
+        Assert.assertEquals("1235", semesters.get(1).getId());
         Assert.assertTrue(semesters.get(1).isCurrent());
     }
 
@@ -150,9 +150,7 @@ public class StudentAndParentTest {
         Assert.assertFalse(snp.getDiaries().get(1).isCurrent());
         Assert.assertFalse(snp.getDiaries().get(2).isCurrent());
 
-        Assert.assertEquals("100", snp.getDiaries().get(0).getStudentId());
-
         Assert.assertEquals("Jan Kowal", snp.getStudents().get(0).getName());
-        Assert.assertEquals("100", snp.getStudents().get(0).getStudentId());
+        Assert.assertEquals("100", snp.getStudents().get(0).getId());
     }
 }

api/src/test/java/io/github/wulkanowy/api/grades/GradesListTest.java

@@ -101,14 +101,4 @@ public class GradesListTest extends StudentAndParentTestCase {
         Assert.assertEquals("Klaudia Dziedzic", list.get(4).getTeacher());
         Assert.assertEquals("Amelia Stępień", list.get(5).getTeacher());
     }
-
-    @Test
-    public void getSemesterTest() throws Exception {
-        List<Grade> list = filled.getAll();
-
-        Assert.assertEquals("7654321", list.get(0).getSemester());
-        Assert.assertEquals("7654321", list.get(3).getSemester());
-        Assert.assertEquals("7654321", list.get(4).getSemester());
-        Assert.assertEquals("7654321", list.get(5).getSemester());
-    }
 }

app/build.gradle

@@ -62,7 +62,7 @@ android {
 }
 
 greendao {
-    schemaVersion 23
+    schemaVersion 24
     generateTests = true
 }
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/AttendanceLessonTest.java

@@ -12,13 +12,13 @@ public class AttendanceLessonTest extends AbstractDaoTestLongPk<AttendanceLesson
     protected AttendanceLesson createEntity(Long key) {
         AttendanceLesson entity = new AttendanceLesson();
         entity.setId(key);
-        entity.setIsPresence(false);
+        entity.setPresence(false);
-        entity.setIsAbsenceUnexcused(false);
+        entity.setAbsenceUnexcused(false);
-        entity.setIsAbsenceExcused(false);
+        entity.setAbsenceExcused(false);
-        entity.setIsUnexcusedLateness(false);
+        entity.setUnexcusedLateness(false);
-        entity.setIsAbsenceForSchoolReasons(false);
+        entity.setAbsenceForSchoolReasons(false);
-        entity.setIsExcusedLateness(false);
+        entity.setExcusedLateness(false);
-        entity.setIsExemption(false);
+        entity.setExemption(false);
         return entity;
     }
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/DayTest.java

@@ -12,7 +12,7 @@ public class DayTest extends AbstractDaoTestLongPk<DayDao, Day> {
     protected Day createEntity(Long key) {
         Day entity = new Day();
         entity.setId(key);
-        entity.setIsFreeDay(false);
+        entity.setFreeDay(false);
         return entity;
     }
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/DiaryTest.java

@@ -12,7 +12,7 @@ public class DiaryTest extends AbstractDaoTestLongPk<DiaryDao, Diary> {
     protected Diary createEntity(Long key) {
         Diary entity = new Diary();
         entity.setId(key);
-        entity.setIsCurrent(false);
+        entity.setCurrent(false);
         return entity;
     }
 

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/SemesterTest.java

@@ -0,0 +1,21 @@
+package io.github.wulkanowy.data.db.dao.entities;
+
+import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
+
+import io.github.wulkanowy.data.db.dao.entities.Semester;
+import io.github.wulkanowy.data.db.dao.entities.SemesterDao;
+
+public class SemesterTest extends AbstractDaoTestLongPk<SemesterDao, Semester> {
+
+    public SemesterTest() {
+        super(SemesterDao.class);
+    }
+
+    @Override
+    protected Semester createEntity(Long key) {
+        Semester entity = new Semester();
+        entity.setId(key);
+        return entity;
+    }
+
+}

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/StudentTest.java

@@ -0,0 +1,21 @@
+package io.github.wulkanowy.data.db.dao.entities;
+
+import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
+
+import io.github.wulkanowy.data.db.dao.entities.Student;
+import io.github.wulkanowy.data.db.dao.entities.StudentDao;
+
+public class StudentTest extends AbstractDaoTestLongPk<StudentDao, Student> {
+
+    public StudentTest() {
+        super(StudentDao.class);
+    }
+
+    @Override
+    protected Student createEntity(Long key) {
+        Student entity = new Student();
+        entity.setId(key);
+        return entity;
+    }
+
+}

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/SymbolTest.java

@@ -0,0 +1,21 @@
+package io.github.wulkanowy.data.db.dao.entities;
+
+import org.greenrobot.greendao.test.AbstractDaoTestLongPk;
+
+import io.github.wulkanowy.data.db.dao.entities.Symbol;
+import io.github.wulkanowy.data.db.dao.entities.SymbolDao;
+
+public class SymbolTest extends AbstractDaoTestLongPk<SymbolDao, Symbol> {
+
+    public SymbolTest() {
+        super(SymbolDao.class);
+    }
+
+    @Override
+    protected Symbol createEntity(Long key) {
+        Symbol entity = new Symbol();
+        entity.setId(key);
+        return entity;
+    }
+
+}

app/src/androidTest/java/io/github/wulkanowy/data/db/dao/entities/TimetableLessonTest.java

@@ -12,12 +12,12 @@ public class TimetableLessonTest extends AbstractDaoTestLongPk<TimetableLessonDa
     protected TimetableLesson createEntity(Long key) {
         TimetableLesson entity = new TimetableLesson();
         entity.setId(key);
-        entity.setIsEmpty(false);
+        entity.setEmpty(false);
-        entity.setIsDivisionIntoGroups(false);
+        entity.setDivisionIntoGroups(false);
-        entity.setIsPlanning(false);
+        entity.setPlanning(false);
-        entity.setIsRealized(false);
+        entity.setRealized(false);
-        entity.setIsMovedOrCanceled(false);
+        entity.setMovedOrCanceled(false);
-        entity.setIsNewMovedInOrChanged(false);
+        entity.setNewMovedInOrChanged(false);
         return entity;
     }
 

app/src/main/java/io/github/wulkanowy/data/Repository.java

@@ -11,8 +11,13 @@ import io.github.wulkanowy.api.VulcanException;
 import io.github.wulkanowy.data.db.dao.entities.Account;
 import io.github.wulkanowy.data.db.dao.entities.AttendanceLesson;
 import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.dao.entities.DiaryDao;
 import io.github.wulkanowy.data.db.dao.entities.Grade;
 import io.github.wulkanowy.data.db.dao.entities.GradeDao;
+import io.github.wulkanowy.data.db.dao.entities.SemesterDao;
+import io.github.wulkanowy.data.db.dao.entities.StudentDao;
+import io.github.wulkanowy.data.db.dao.entities.Subject;
+import io.github.wulkanowy.data.db.dao.entities.SymbolDao;
 import io.github.wulkanowy.data.db.dao.entities.Week;
 import io.github.wulkanowy.data.db.dao.entities.WeekDao;
 import io.github.wulkanowy.data.db.resources.ResourcesContract;
@@ -136,32 +141,32 @@ public class Repository implements RepositoryContract {
 
     @Override
     public void syncGrades() throws VulcanException, IOException, ParseException {
-        gradeSync.sync();
+        gradeSync.sync(getCurrentSemesterId());
     }
 
     @Override
     public void syncSubjects() throws VulcanException, IOException, ParseException {
-        subjectSync.sync();
+        subjectSync.sync(getCurrentSemesterId());
     }
 
     @Override
     public void syncAttendance() throws ParseException, IOException, VulcanException {
-        attendanceSync.syncAttendance();
+        attendanceSync.syncAttendance(getCurrentDiaryId());
     }
 
     @Override
     public void syncAttendance(String date) throws ParseException, IOException, VulcanException {
-        attendanceSync.syncAttendance(date);
+        attendanceSync.syncAttendance(getCurrentDiaryId(), date);
     }
 
     @Override
     public void syncTimetable() throws VulcanException, IOException, ParseException {
-        timetableSync.syncTimetable();
+        timetableSync.syncTimetable(getCurrentDiaryId());
     }
 
     @Override
     public void syncTimetable(String date) throws VulcanException, IOException, ParseException {
-        timetableSync.syncTimetable(date);
+        timetableSync.syncTimetable(getCurrentDiaryId(), date);
     }
 
     @Override
@@ -179,16 +184,52 @@ public class Repository implements RepositoryContract {
 
     @Override
     public Week getWeek(String date) {
-        return daoSession.getWeekDao().queryBuilder()
+        return daoSession.getWeekDao().queryBuilder().where(
-                .where(WeekDao.Properties.StartDayDate.eq(date),
+                WeekDao.Properties.StartDayDate.eq(date),
-                        WeekDao.Properties.UserId.eq(getCurrentUserId()))
+                WeekDao.Properties.DiaryId.eq(getCurrentDiaryId())
-                .unique();
+        ).unique();
+    }
+
+    public List<Subject> getSubjectList() {
+        return daoSession.getSemesterDao().load(getCurrentSemesterId()).getSubjectList();
     }
 
     @Override
     public List<Grade> getNewGrades() {
-        return daoSession.getGradeDao().queryBuilder()
+        return daoSession.getGradeDao().queryBuilder().where(
-                .where(GradeDao.Properties.IsNew.eq(1))
+                GradeDao.Properties.IsNew.eq(1),
-                .list();
+                GradeDao.Properties.SemesterId.eq(getCurrentSemesterId())
+        ).list();
+    }
+
+    @Override
+    public long getCurrentSymbolId() {
+        return daoSession.getSymbolDao().queryBuilder().where(
+                SymbolDao.Properties.UserId.eq(getCurrentUserId())
+        ).unique().getId();
+    }
+
+    @Override
+    public long getCurrentStudentId() {
+        return daoSession.getStudentDao().queryBuilder().where(
+                StudentDao.Properties.SymbolId.eq(getCurrentSymbolId()),
+                StudentDao.Properties.Current.eq(true)
+        ).unique().getId();
+    }
+
+    @Override
+    public long getCurrentDiaryId() {
+        return daoSession.getDiaryDao().queryBuilder().where(
+                DiaryDao.Properties.StudentId.eq(getCurrentStudentId()),
+                DiaryDao.Properties.Current.eq(true)
+        ).unique().getId();
+    }
+
+    @Override
+    public long getCurrentSemesterId() {
+        return daoSession.getSemesterDao().queryBuilder().where(
+                SemesterDao.Properties.DiaryId.eq(getCurrentDiaryId()),
+                SemesterDao.Properties.Current.eq(true)
+        ).unique().getId();
     }
 }

app/src/main/java/io/github/wulkanowy/data/RepositoryContract.java

@@ -9,15 +9,13 @@ import javax.inject.Singleton;
 import io.github.wulkanowy.api.VulcanException;
 import io.github.wulkanowy.data.db.dao.entities.Account;
 import io.github.wulkanowy.data.db.dao.entities.Grade;
+import io.github.wulkanowy.data.db.dao.entities.Subject;
 import io.github.wulkanowy.data.db.dao.entities.Week;
 import io.github.wulkanowy.data.db.resources.ResourcesContract;
 import io.github.wulkanowy.data.sync.account.AccountSyncContract;
-import io.github.wulkanowy.data.sync.attendance.AttendanceSyncContract;
-import io.github.wulkanowy.data.sync.timetable.TimetableSyncContract;
 
 @Singleton
-public interface RepositoryContract extends ResourcesContract, AccountSyncContract,
+public interface RepositoryContract extends ResourcesContract, AccountSyncContract {
-        AttendanceSyncContract, TimetableSyncContract {
 
     long getCurrentUserId();
 
@@ -39,11 +37,29 @@ public interface RepositoryContract extends ResourcesContract, AccountSyncContra
 
     void syncSubjects() throws VulcanException, IOException, ParseException;
 
+    void syncAttendance() throws ParseException, IOException, VulcanException;
+
+    void syncAttendance(String date) throws ParseException, IOException, VulcanException;
+
+    void syncTimetable() throws VulcanException, IOException, ParseException;
+
+    void syncTimetable(String date) throws VulcanException, IOException, ParseException;
+
     void syncAll() throws VulcanException, IOException, ParseException;
 
     Account getCurrentUser();
 
     Week getWeek(String date);
 
+    List<Subject> getSubjectList();
+
     List<Grade> getNewGrades();
+
+    long getCurrentStudentId();
+
+    long getCurrentSymbolId();
+
+    long getCurrentDiaryId();
+
+    long getCurrentSemesterId();
 }

app/src/main/java/io/github/wulkanowy/data/db/dao/DbHelper.java

@@ -17,6 +17,7 @@ import javax.inject.Singleton;
 import io.github.wulkanowy.api.Vulcan;
 import io.github.wulkanowy.data.db.dao.entities.DaoMaster;
 import io.github.wulkanowy.data.db.dao.migrations.Migration23;
+import io.github.wulkanowy.data.db.dao.migrations.Migration24;
 import io.github.wulkanowy.data.db.shared.SharedPrefContract;
 import io.github.wulkanowy.di.annotations.ApplicationContext;
 import io.github.wulkanowy.di.annotations.DatabaseInfo;
@@ -39,11 +40,9 @@ public class DbHelper extends DaoMaster.OpenHelper {
 
     @Override
     public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-        Database database = new StandardDatabase(db);
-        DaoMaster.dropAllTables(database, true);
-        onCreate(database);
-        sharedPref.setCurrentUserId(0);
         LogUtils.info("Cleaning user data oldVersion=" + oldVersion + " newVersion=" + newVersion);
+        Database database = new StandardDatabase(db);
+        recreateDatabase(database);
     }
 
     @Override
@@ -59,17 +58,23 @@ public class DbHelper extends DaoMaster.OpenHelper {
                     LogUtils.info("Migration " + migration.getVersion() + " complete");
                 } catch (Exception e) {
                     e.printStackTrace();
-                    DaoMaster.dropAllTables(db, true);
+                    recreateDatabase(db);
-                    sharedPref.setCurrentUserId(0);
                     break;
                 }
             }
         }
     }
 
+    private void recreateDatabase(Database db) {
+        sharedPref.setCurrentUserId(0);
+        DaoMaster.dropAllTables(db, true);
+        onCreate(db);
+    }
+
     private List<Migration> getMigrations() {
         List<Migration> migrations = new ArrayList<>();
         migrations.add(new Migration23());
+        migrations.add(new Migration24());
 
         // Sorting just to be safe, in case other people add migrations in the wrong order.
         Comparator<Migration> migrationComparator = new Comparator<Migration>() {

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Account.java

@@ -4,10 +4,9 @@ import org.greenrobot.greendao.DaoException;
 import org.greenrobot.greendao.annotation.Entity;
 import org.greenrobot.greendao.annotation.Generated;
 import org.greenrobot.greendao.annotation.Id;
-import org.greenrobot.greendao.annotation.Index;
-import org.greenrobot.greendao.annotation.JoinProperty;
 import org.greenrobot.greendao.annotation.Property;
 import org.greenrobot.greendao.annotation.ToMany;
+import org.greenrobot.greendao.annotation.Unique;
 
 import java.util.List;
 
@@ -20,38 +19,15 @@ public class Account {
     @Id(autoincrement = true)
     private Long id;
 
-    @Index(unique = true)
+    @Unique
-    @Property(nameInDb = "REAL_ID")
+    @Property(nameInDb = "email")
-    private String realId;
-
-    @Property(nameInDb = "SYMBOL")
-    private String symbol;
-
-    @Property(nameInDb = "SCHOOL_ID")
-    private String schoolId;
-
-    @Property(nameInDb = "NAME")
-    private String name;
-
-    @Property(nameInDb = "E_MAIL")
     private String email;
 
-    @Property(nameInDb = "PASSWORD")
+    @Property(nameInDb = "password")
     private String password;
 
-    @ToMany(joinProperties = {
-            @JoinProperty(name = "realId", referencedName = "studentId")
-    })
-    private List<Diary> diaryList;
-
     @ToMany(referencedJoinProperty = "userId")
-    private List<Subject> subjectList;
+    private List<Symbol> symbolList;
-
-    @ToMany(referencedJoinProperty = "userId")
-    private List<Grade> gradeList;
-
-    @ToMany(referencedJoinProperty = "userId")
-    private List<Day> dayList;
 
     /**
      * Used to resolve relations
@@ -65,14 +41,9 @@ public class Account {
     @Generated(hash = 335469827)
     private transient AccountDao myDao;
 
-    @Generated(hash = 727721142)
+    @Generated(hash = 1104194311)
-    public Account(Long id, String realId, String symbol, String schoolId, String name,
+    public Account(Long id, String email, String password) {
-            String email, String password) {
         this.id = id;
-        this.realId = realId;
-        this.symbol = symbol;
-        this.schoolId = schoolId;
-        this.name = name;
         this.email = email;
         this.password = password;
     }
@@ -82,34 +53,15 @@ public class Account {
     }
 
     public Long getId() {
-        return id;
+        return this.id;
     }
 
-    public Account setId(Long id) {
+    public void setId(Long id) {
         this.id = id;
-        return this;
-    }
-
-    public String getRealId() {
-        return realId;
-    }
-
-    public Account setRealId(String realId) {
-        this.realId = realId;
-        return this;
-    }
-
-    public String getName() {
-        return name;
-    }
-
-    public Account setName(String name) {
-        this.name = name;
-        return this;
     }
 
     public String getEmail() {
-        return email;
+        return this.email;
     }
 
     public Account setEmail(String email) {
@@ -118,7 +70,7 @@ public class Account {
     }
 
     public String getPassword() {
-        return password;
+        return this.password;
     }
 
     public Account setPassword(String password) {
@@ -126,180 +78,34 @@ public class Account {
         return this;
     }
 
-    public String getSymbol() {
-        return symbol;
-    }
-
-    public Account setSymbol(String symbol) {
-        this.symbol = symbol;
-        return this;
-    }
-
-    public String getSchoolId() {
-        return schoolId;
-    }
-
-    public Account setSchoolId(String schoolId) {
-        this.schoolId = schoolId;
-        return this;
-    }
-
-    public Account setDiaryList(List<Diary> diaryList) {
-        this.diaryList = diaryList;
-        return this;
-    }
-
-    public Account setSubjectList(List<Subject> subjectList) {
-        this.subjectList = subjectList;
-        return this;
-    }
-
-    public Account setGradeList(List<Grade> gradeList) {
-        this.gradeList = gradeList;
-        return this;
-    }
-
-    public Account setDayList(List<Day> dayList) {
-        this.dayList = dayList;
-        return this;
-    }
-
-    public DaoSession getDaoSession() {
-        return daoSession;
-    }
-
-    public Account setDaoSession(DaoSession daoSession) {
-        this.daoSession = daoSession;
-        return this;
-    }
-
-    public AccountDao getMyDao() {
-        return myDao;
-    }
-
-    public Account setMyDao(AccountDao myDao) {
-        this.myDao = myDao;
-        return this;
-    }
-
     /**
      * To-many relationship, resolved on first access (and after reset).
      * Changes to to-many relations are not persisted, make changes to the target entity.
      */
-    @Generated(hash = 1472214466)
+    @Generated(hash = 822972496)
-    public List<Diary> getDiaryList() {
+    public List<Symbol> getSymbolList() {
-        if (diaryList == null) {
+        if (symbolList == null) {
             final DaoSession daoSession = this.daoSession;
             if (daoSession == null) {
                 throw new DaoException("Entity is detached from DAO context");
             }
-            DiaryDao targetDao = daoSession.getDiaryDao();
+            SymbolDao targetDao = daoSession.getSymbolDao();
-            List<Diary> diaryListNew = targetDao._queryAccount_DiaryList(realId);
+            List<Symbol> symbolListNew = targetDao._queryAccount_SymbolList(id);
             synchronized (this) {
-                if (diaryList == null) {
+                if (symbolList == null) {
-                    diaryList = diaryListNew;
+                    symbolList = symbolListNew;
                 }
             }
         }
-        return diaryList;
+        return symbolList;
     }
 
     /**
      * Resets a to-many relationship, making the next get call to query for a fresh result.
      */
-    @Generated(hash = 1078514341)
+    @Generated(hash = 1716801695)
-    public synchronized void resetDiaryList() {
+    public synchronized void resetSymbolList() {
-        diaryList = null;
+        symbolList = null;
-    }
-
-    /**
-     * To-many relationship, resolved on first access (and after reset).
-     * Changes to to-many relations are not persisted, make changes to the target entity.
-     */
-    @Generated(hash = 1800750450)
-    public List<Subject> getSubjectList() {
-        if (subjectList == null) {
-            final DaoSession daoSession = this.daoSession;
-            if (daoSession == null) {
-                throw new DaoException("Entity is detached from DAO context");
-            }
-            SubjectDao targetDao = daoSession.getSubjectDao();
-            List<Subject> subjectListNew = targetDao._queryAccount_SubjectList(id);
-            synchronized (this) {
-                if (subjectList == null) {
-                    subjectList = subjectListNew;
-                }
-            }
-        }
-        return subjectList;
-    }
-
-    /**
-     * Resets a to-many relationship, making the next get call to query for a fresh result.
-     */
-    @Generated(hash = 594294258)
-    public synchronized void resetSubjectList() {
-        subjectList = null;
-    }
-
-    /**
-     * To-many relationship, resolved on first access (and after reset).
-     * Changes to to-many relations are not persisted, make changes to the target entity.
-     */
-    @Generated(hash = 1040074549)
-    public List<Grade> getGradeList() {
-        if (gradeList == null) {
-            final DaoSession daoSession = this.daoSession;
-            if (daoSession == null) {
-                throw new DaoException("Entity is detached from DAO context");
-            }
-            GradeDao targetDao = daoSession.getGradeDao();
-            List<Grade> gradeListNew = targetDao._queryAccount_GradeList(id);
-            synchronized (this) {
-                if (gradeList == null) {
-                    gradeList = gradeListNew;
-                }
-            }
-        }
-        return gradeList;
-    }
-
-    /**
-     * Resets a to-many relationship, making the next get call to query for a fresh result.
-     */
-    @Generated(hash = 1939990047)
-    public synchronized void resetGradeList() {
-        gradeList = null;
-    }
-
-    /**
-     * To-many relationship, resolved on first access (and after reset).
-     * Changes to to-many relations are not persisted, make changes to the target entity.
-     */
-    @Generated(hash = 300459794)
-    public List<Day> getDayList() {
-        if (dayList == null) {
-            final DaoSession daoSession = this.daoSession;
-            if (daoSession == null) {
-                throw new DaoException("Entity is detached from DAO context");
-            }
-            DayDao targetDao = daoSession.getDayDao();
-            List<Day> dayListNew = targetDao._queryAccount_DayList(id);
-            synchronized (this) {
-                if (dayList == null) {
-                    dayList = dayListNew;
-                }
-            }
-        }
-        return dayList;
-    }
-
-    /**
-     * Resets a to-many relationship, making the next get call to query for a fresh result.
-     */
-    @Generated(hash = 1010399236)
-    public synchronized void resetDayList() {
-        dayList = null;
     }
 
     /**

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/AttendanceLesson.java

@@ -20,38 +20,38 @@ public class AttendanceLesson implements Serializable {
     @Id(autoincrement = true)
     private Long id;
 
-    @Property(nameInDb = "DAY_ID")
+    @Property(nameInDb = "day_id")
     private Long dayId;
 
-    @Property(nameInDb = "DATE")
+    @Property(nameInDb = "date")
     private String date = "";
 
-    @Property(nameInDb = "NUMBER_OF_LESSON")
+    @Property(nameInDb = "number_of_lesson")
     private int number = 0;
 
-    @Property(nameInDb = "SUBJECT_NAME")
+    @Property(nameInDb = "subject")
     private String subject = "";
 
-    @Property(nameInDb = "IS_PRESENCE")
+    @Property(nameInDb = "presence")
-    private boolean isPresence = false;
+    private boolean presence = false;
 
-    @Property(nameInDb = "IS_ABSENCE_UNEXCUSED")
+    @Property(nameInDb = "absence_unexcused")
-    private boolean isAbsenceUnexcused = false;
+    private boolean absenceUnexcused = false;
 
-    @Property(nameInDb = "IS_ABSENCE_EXCUSED")
+    @Property(nameInDb = "absence_excused")
-    private boolean isAbsenceExcused = false;
+    private boolean absenceExcused = false;
 
-    @Property(nameInDb = "IS_UNEXCUSED_LATENESS")
+    @Property(nameInDb = "unexcused_lateness")
-    private boolean isUnexcusedLateness = false;
+    private boolean unexcusedLateness = false;
 
-    @Property(nameInDb = "IS_ABSENCE_FOR_SCHOOL_REASONS")
+    @Property(nameInDb = "absence_for_school_reasons")
-    private boolean isAbsenceForSchoolReasons = false;
+    private boolean absenceForSchoolReasons = false;
 
-    @Property(nameInDb = "IS_EXCUSED_LATENESS")
+    @Property(nameInDb = "excused_lateness")
-    private boolean isExcusedLateness = false;
+    private boolean excusedLateness = false;
 
-    @Property(nameInDb = "IS_EXEMPTION")
+    @Property(nameInDb = "exemption")
-    private boolean isExemption = false;
+    private boolean exemption = false;
 
     @Transient
     private String description = "";
@@ -70,24 +70,24 @@ public class AttendanceLesson implements Serializable {
     @Generated(hash = 1936953859)
     private transient AttendanceLessonDao myDao;
 
-    @Generated(hash = 1428129046)
+    @Generated(hash = 1741231228)
     public AttendanceLesson(Long id, Long dayId, String date, int number,
-                            String subject, boolean isPresence, boolean isAbsenceUnexcused,
+                            String subject, boolean presence, boolean absenceUnexcused,
-                            boolean isAbsenceExcused, boolean isUnexcusedLateness,
+                            boolean absenceExcused, boolean unexcusedLateness,
-                            boolean isAbsenceForSchoolReasons, boolean isExcusedLateness,
+                            boolean absenceForSchoolReasons, boolean excusedLateness,
-                            boolean isExemption) {
+                            boolean exemption) {
         this.id = id;
         this.dayId = dayId;
         this.date = date;
         this.number = number;
         this.subject = subject;
-        this.isPresence = isPresence;
+        this.presence = presence;
-        this.isAbsenceUnexcused = isAbsenceUnexcused;
+        this.absenceUnexcused = absenceUnexcused;
-        this.isAbsenceExcused = isAbsenceExcused;
+        this.absenceExcused = absenceExcused;
-        this.isUnexcusedLateness = isUnexcusedLateness;
+        this.unexcusedLateness = unexcusedLateness;
-        this.isAbsenceForSchoolReasons = isAbsenceForSchoolReasons;
+        this.absenceForSchoolReasons = absenceForSchoolReasons;
-        this.isExcusedLateness = isExcusedLateness;
+        this.excusedLateness = excusedLateness;
-        this.isExemption = isExemption;
+        this.exemption = exemption;
     }
 
     @Generated(hash = 921806575)
@@ -137,66 +137,66 @@ public class AttendanceLesson implements Serializable {
         return this;
     }
 
-    public boolean getIsPresence() {
+    public boolean getPresence() {
-        return this.isPresence;
+        return this.presence;
     }
 
-    public AttendanceLesson setIsPresence(boolean isPresence) {
+    public AttendanceLesson setPresence(boolean presence) {
-        this.isPresence = isPresence;
+        this.presence = presence;
         return this;
     }
 
-    public boolean getIsAbsenceUnexcused() {
+    public boolean getAbsenceUnexcused() {
-        return this.isAbsenceUnexcused;
+        return this.absenceUnexcused;
     }
 
-    public AttendanceLesson setIsAbsenceUnexcused(boolean isAbsenceUnexcused) {
+    public AttendanceLesson setAbsenceUnexcused(boolean absenceUnexcused) {
-        this.isAbsenceUnexcused = isAbsenceUnexcused;
+        this.absenceUnexcused = absenceUnexcused;
         return this;
     }
 
-    public boolean getIsAbsenceExcused() {
+    public boolean getAbsenceExcused() {
-        return this.isAbsenceExcused;
+        return this.absenceExcused;
     }
 
-    public AttendanceLesson setIsAbsenceExcused(boolean isAbsenceExcused) {
+    public AttendanceLesson setAbsenceExcused(boolean absenceExcused) {
-        this.isAbsenceExcused = isAbsenceExcused;
+        this.absenceExcused = absenceExcused;
         return this;
     }
 
-    public boolean getIsUnexcusedLateness() {
+    public boolean getUnexcusedLateness() {
-        return this.isUnexcusedLateness;
+        return this.unexcusedLateness;
     }
 
-    public AttendanceLesson setIsUnexcusedLateness(boolean isUnexcusedLateness) {
+    public AttendanceLesson setUnexcusedLateness(boolean unexcusedLateness) {
-        this.isUnexcusedLateness = isUnexcusedLateness;
+        this.unexcusedLateness = unexcusedLateness;
         return this;
     }
 
-    public boolean getIsAbsenceForSchoolReasons() {
+    public boolean getAbsenceForSchoolReasons() {
-        return this.isAbsenceForSchoolReasons;
+        return this.absenceForSchoolReasons;
     }
 
-    public AttendanceLesson setIsAbsenceForSchoolReasons(boolean isAbsenceForSchoolReasons) {
+    public AttendanceLesson setAbsenceForSchoolReasons(boolean absenceForSchoolReasons) {
-        this.isAbsenceForSchoolReasons = isAbsenceForSchoolReasons;
+        this.absenceForSchoolReasons = absenceForSchoolReasons;
         return this;
     }
 
-    public boolean getIsExcusedLateness() {
+    public boolean getExcusedLateness() {
-        return this.isExcusedLateness;
+        return this.excusedLateness;
     }
 
-    public AttendanceLesson setIsExcusedLateness(boolean isExcusedLateness) {
+    public AttendanceLesson setExcusedLateness(boolean excusedLateness) {
-        this.isExcusedLateness = isExcusedLateness;
+        this.excusedLateness = excusedLateness;
         return this;
     }
 
-    public boolean getIsExemption() {
+    public boolean getExemption() {
-        return this.isExemption;
+        return this.exemption;
     }
 
-    public AttendanceLesson setIsExemption(boolean isExemption) {
+    public AttendanceLesson setExemption(boolean exemption) {
-        this.isExemption = isExemption;
+        this.exemption = exemption;
         return this;
     }
 

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Day.java

@@ -5,7 +5,6 @@ import org.greenrobot.greendao.annotation.Entity;
 import org.greenrobot.greendao.annotation.Generated;
 import org.greenrobot.greendao.annotation.Id;
 import org.greenrobot.greendao.annotation.Index;
-import org.greenrobot.greendao.annotation.OrderBy;
 import org.greenrobot.greendao.annotation.Property;
 import org.greenrobot.greendao.annotation.ToMany;
 
@@ -14,36 +13,32 @@ import java.util.List;
 @Entity(
         nameInDb = "Days",
         active = true,
-        indexes = {@Index(value = "userId,weekId,date", unique = true)}
+        indexes = {@Index(value = "weekId,date", unique = true)}
 )
 public class Day {
 
     @Id(autoincrement = true)
     private Long id;
 
-    @Property(nameInDb = "USER_ID")
+    @Property(nameInDb = "week_id")
-    private Long userId;
-
-    @Property(nameInDb = "WEEK_ID")
     private Long weekId;
 
-    @Property(nameInDb = "DATE")
+    @Property(nameInDb = "date")
     private String date = "";
 
-    @Property(nameInDb = "DAY_NAME")
+    @Property(nameInDb = "day_name")
     private String dayName = "";
 
-    @Property(nameInDb = "IS_FREE_DAY")
+    @Property(nameInDb = "free_day")
-    private boolean isFreeDay = false;
+    private boolean freeDay = false;
 
-    @Property(nameInDb = "FREE_DAY_NAME")
+    @Property(nameInDb = "free_day_name")
     private String freeDayName = "";
 
     @ToMany(referencedJoinProperty = "dayId")
     private List<TimetableLesson> timetableLessons;
 
     @ToMany(referencedJoinProperty = "dayId")
-    @OrderBy("number ASC")
     private List<AttendanceLesson> attendanceLessons;
 
     /**
@@ -58,15 +53,14 @@ public class Day {
     @Generated(hash = 312167767)
     private transient DayDao myDao;
 
-    @Generated(hash = 723729681)
+    @Generated(hash = 523139020)
-    public Day(Long id, Long userId, Long weekId, String date, String dayName,
+    public Day(Long id, Long weekId, String date, String dayName, boolean freeDay,
-            boolean isFreeDay, String freeDayName) {
+               String freeDayName) {
         this.id = id;
-        this.userId = userId;
         this.weekId = weekId;
         this.date = date;
         this.dayName = dayName;
-        this.isFreeDay = isFreeDay;
+        this.freeDay = freeDay;
         this.freeDayName = freeDayName;
     }
 
@@ -82,26 +76,16 @@ public class Day {
         this.id = id;
     }
 
-    public Long getUserId() {
-        return userId;
-    }
-
     public Long getWeekId() {
-        return weekId;
+        return this.weekId;
     }
 
-    public Day setWeekId(Long weekId) {
+    public void setWeekId(Long weekId) {
         this.weekId = weekId;
-        return this;
-    }
-
-    public Day setUserId(Long userId) {
-        this.userId = userId;
-        return this;
     }
 
     public String getDate() {
-        return date;
+        return this.date;
     }
 
     public Day setDate(String date) {
@@ -110,7 +94,7 @@ public class Day {
     }
 
     public String getDayName() {
-        return dayName;
+        return this.dayName;
     }
 
     public Day setDayName(String dayName) {
@@ -118,17 +102,17 @@ public class Day {
         return this;
     }
 
-    public boolean getIsFreeDay() {
+    public boolean getFreeDay() {
-        return this.isFreeDay;
+        return this.freeDay;
     }
 
-    public Day setIsFreeDay(boolean isFreeDay) {
+    public Day setFreeDay(boolean freeDay) {
-        this.isFreeDay = isFreeDay;
+        this.freeDay = freeDay;
         return this;
     }
 
     public String getFreeDayName() {
-        return freeDayName;
+        return this.freeDayName;
     }
 
     public Day setFreeDayName(String freeDayName) {
@@ -159,7 +143,9 @@ public class Day {
         return timetableLessons;
     }
 
-    /** Resets a to-many relationship, making the next get call to query for a fresh result. */
+    /**
+     * Resets a to-many relationship, making the next get call to query for a fresh result.
+     */
     @Generated(hash = 1687683740)
     public synchronized void resetTimetableLessons() {
         timetableLessons = null;
@@ -188,7 +174,9 @@ public class Day {
         return attendanceLessons;
     }
 
-    /** Resets a to-many relationship, making the next get call to query for a fresh result. */
+    /**
+     * Resets a to-many relationship, making the next get call to query for a fresh result.
+     */
     @Generated(hash = 1343075564)
     public synchronized void resetAttendanceLessons() {
         attendanceLessons = null;

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Diary.java

@@ -5,6 +5,9 @@ import org.greenrobot.greendao.annotation.Entity;
 import org.greenrobot.greendao.annotation.Generated;
 import org.greenrobot.greendao.annotation.Id;
 import org.greenrobot.greendao.annotation.Property;
+import org.greenrobot.greendao.annotation.ToMany;
+
+import java.util.List;
 
 @Entity(
         nameInDb = "Diaries",
@@ -15,17 +18,20 @@ public class Diary {
     @Id(autoincrement = true)
     private Long id;
 
-    @Property(nameInDb = "STUDENT_ID")
+    @Property(nameInDb = "student_id")
-    private String studentId;
+    private Long studentId;
 
-    @Property(nameInDb = "NAME")
+    @Property(nameInDb = "current")
+    private boolean current;
+
+    @Property(nameInDb = "name")
     private String name;
 
-    @Property(nameInDb = "VALUE")
+    @Property(nameInDb = "value")
     private String value;
 
-    @Property(nameInDb = "IS_CURRENT")
+    @ToMany(referencedJoinProperty = "diaryId")
-    private boolean isCurrent;
+    private List<Semester> semesterList;
 
     /**
      * Used to resolve relations
@@ -39,14 +45,13 @@ public class Diary {
     @Generated(hash = 21166549)
     private transient DiaryDao myDao;
 
-    @Generated(hash = 459332202)
+    @Generated(hash = 277096196)
-    public Diary(Long id, String studentId, String name, String value,
+    public Diary(Long id, Long studentId, boolean current, String name, String value) {
-                 boolean isCurrent) {
         this.id = id;
         this.studentId = studentId;
+        this.current = current;
         this.name = name;
         this.value = value;
-        this.isCurrent = isCurrent;
     }
 
     @Generated(hash = 112123061)
@@ -54,25 +59,24 @@ public class Diary {
     }
 
     public Long getId() {
-        return id;
+        return this.id;
     }
 
-    public Diary setId(Long id) {
+    public void setId(Long id) {
         this.id = id;
-        return this;
     }
 
-    public String getStudentId() {
+    public Long getStudentId() {
-        return studentId;
+        return this.studentId;
     }
 
-    public Diary setStudentId(String studentId) {
+    public Diary setStudentId(Long studentId) {
         this.studentId = studentId;
         return this;
     }
 
     public String getName() {
-        return name;
+        return this.name;
     }
 
     public Diary setName(String name) {
@@ -81,7 +85,7 @@ public class Diary {
     }
 
     public String getValue() {
-        return value;
+        return this.value;
     }
 
     public Diary setValue(String value) {
@@ -89,31 +93,43 @@ public class Diary {
         return this;
     }
 
-    public boolean getIsCurrent() {
+    public boolean getCurrent() {
-        return isCurrent;
+        return this.current;
     }
 
-    public Diary setIsCurrent(boolean current) {
+    public Diary setCurrent(boolean current) {
-        isCurrent = current;
+        this.current = current;
         return this;
     }
 
-    public DaoSession getDaoSession() {
+    /**
-        return daoSession;
+     * To-many relationship, resolved on first access (and after reset).
+     * Changes to to-many relations are not persisted, make changes to the target entity.
+     */
+    @Generated(hash = 1738383053)
+    public List<Semester> getSemesterList() {
+        if (semesterList == null) {
+            final DaoSession daoSession = this.daoSession;
+            if (daoSession == null) {
+                throw new DaoException("Entity is detached from DAO context");
+            }
+            SemesterDao targetDao = daoSession.getSemesterDao();
+            List<Semester> semesterListNew = targetDao._queryDiary_SemesterList(id);
+            synchronized (this) {
+                if (semesterList == null) {
+                    semesterList = semesterListNew;
+                }
+            }
+        }
+        return semesterList;
     }
 
-    public Diary setDaoSession(DaoSession daoSession) {
+    /**
-        this.daoSession = daoSession;
+     * Resets a to-many relationship, making the next get call to query for a fresh result.
-        return this;
+     */
-    }
+    @Generated(hash = 995060657)
-
+    public synchronized void resetSemesterList() {
-    public DiaryDao getMyDao() {
+        semesterList = null;
-        return myDao;
-    }
-
-    public Diary setMyDao(DiaryDao myDao) {
-        this.myDao = myDao;
-        return this;
     }
 
     /**

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Grade.java

@@ -21,72 +21,44 @@ public class Grade implements Serializable {
     @Id(autoincrement = true)
     protected Long id;
 
-    @Property(nameInDb = "SUBJECT_ID")
+    @Property(nameInDb = "semester_id")
+    private Long semesterId;
+
+    @Property(nameInDb = "subject_id")
     private Long subjectId;
 
-    @Property(nameInDb = "USER_ID")
+    @Property(nameInDb = "subject")
-    private Long userId;
-
-    @Property(nameInDb = "SUBJECT")
     private String subject = "";
 
-    @Property(nameInDb = "VALUE")
+    @Property(nameInDb = "value")
     protected String value = "";
 
-    @Property(nameInDb = "COLOR")
+    @Property(nameInDb = "weight")
-    private String color = "";
-
-    @Property(nameInDb = "SYMBOL")
-    private String symbol = "";
-
-    @Property(nameInDb = "DESCRIPTION")
-    private String description = "";
-
-    @Property(nameInDb = "WEIGHT")
     private String weight = "";
 
-    @Property(nameInDb = "DATE")
+    @Property(nameInDb = "date")
     private String date = "";
 
-    @Property(nameInDb = "TEACHER")
+    @Property(nameInDb = "symbol")
+    private String symbol = "";
+
+    @Property(nameInDb = "color")
+    private String color = "";
+
+    @Property(nameInDb = "description")
+    private String description = "";
+
+    @Property(nameInDb = "teacher")
     private String teacher = "";
 
-    @Property(nameInDb = "SEMESTER")
+    @Property(nameInDb = "is_new")
-    private String semester = "";
-
-    @Property(nameInDb = "IS_NEW")
     private boolean isNew = false;
 
-    @Property(nameInDb = "READ")
+    @Property(nameInDb = "read")
     private boolean read = true;
 
     private static final long serialVersionUID = 42L;
 
-    @Generated(hash = 568899968)
-    public Grade(Long id, Long subjectId, Long userId, String subject, String value,
-                 String color, String symbol, String description, String weight,
-                 String date, String teacher, String semester, boolean isNew,
-                 boolean read) {
-        this.id = id;
-        this.subjectId = subjectId;
-        this.userId = userId;
-        this.subject = subject;
-        this.value = value;
-        this.color = color;
-        this.symbol = symbol;
-        this.description = description;
-        this.weight = weight;
-        this.date = date;
-        this.teacher = teacher;
-        this.semester = semester;
-        this.isNew = isNew;
-        this.read = read;
-    }
-
-    @Generated(hash = 2042976393)
-    public Grade() {
-    }
-
     /**
      * Used to resolve relations
      */
@@ -99,6 +71,29 @@ public class Grade implements Serializable {
     @Generated(hash = 681281562)
     private transient GradeDao myDao;
 
+    @Generated(hash = 2042976393)
+    public Grade() {
+    }
+
+    @Generated(hash = 619853992)
+    public Grade(Long id, Long semesterId, Long subjectId, String subject, String value,
+                 String weight, String date, String symbol, String color, String description,
+                 String teacher, boolean isNew, boolean read) {
+        this.id = id;
+        this.semesterId = semesterId;
+        this.subjectId = subjectId;
+        this.subject = subject;
+        this.value = value;
+        this.weight = weight;
+        this.date = date;
+        this.symbol = symbol;
+        this.color = color;
+        this.description = description;
+        this.teacher = teacher;
+        this.isNew = isNew;
+        this.read = read;
+    }
+
     public int getValueColor() {
 
         String replacedString = value.replaceAll("[^0-9]", "");
@@ -133,6 +128,7 @@ public class Grade implements Serializable {
         Grade grade = (Grade) o;
 
         return new EqualsBuilder()
+                .append(semesterId, grade.semesterId)
                 .append(subject, grade.subject)
                 .append(value, grade.value)
                 .append(color, grade.color)
@@ -141,13 +137,13 @@ public class Grade implements Serializable {
                 .append(weight, grade.weight)
                 .append(date, grade.date)
                 .append(teacher, grade.teacher)
-                .append(semester, grade.semester)
                 .isEquals();
     }
 
     @Override
     public int hashCode() {
         return new HashCodeBuilder(17, 37)
+                .append(semesterId)
                 .append(subject)
                 .append(value)
                 .append(color)
@@ -156,48 +152,19 @@ public class Grade implements Serializable {
                 .append(weight)
                 .append(date)
                 .append(teacher)
-                .append(semester)
                 .toHashCode();
     }
 
     public Long getId() {
-        return id;
+        return this.id;
     }
 
-    public Grade setId(Long id) {
+    public void setId(Long id) {
         this.id = id;
-        return this;
-    }
-
-    public Long getSubjectId() {
-        return subjectId;
-    }
-
-    public Grade setSubjectId(Long subjectId) {
-        this.subjectId = subjectId;
-        return this;
-    }
-
-    public Long getUserId() {
-        return userId;
-    }
-
-    public Grade setUserId(Long userId) {
-        this.userId = userId;
-        return this;
-    }
-
-    public String getSubject() {
-        return subject;
-    }
-
-    public Grade setSubject(String subject) {
-        this.subject = subject;
-        return this;
     }
 
     public String getValue() {
-        return value;
+        return this.value;
     }
 
     public Grade setValue(String value) {
@@ -205,8 +172,26 @@ public class Grade implements Serializable {
         return this;
     }
 
+    public Long getSemesterId() {
+        return this.semesterId;
+    }
+
+    public Grade setSemesterId(Long semesterId) {
+        this.semesterId = semesterId;
+        return this;
+    }
+
+    public String getSubject() {
+        return this.subject;
+    }
+
+    public Grade setSubject(String subject) {
+        this.subject = subject;
+        return this;
+    }
+
     public String getColor() {
-        return color;
+        return this.color;
     }
 
     public Grade setColor(String color) {
@@ -215,7 +200,7 @@ public class Grade implements Serializable {
     }
 
     public String getSymbol() {
-        return symbol;
+        return this.symbol;
     }
 
     public Grade setSymbol(String symbol) {
@@ -224,7 +209,7 @@ public class Grade implements Serializable {
     }
 
     public String getDescription() {
-        return description;
+        return this.description;
     }
 
     public Grade setDescription(String description) {
@@ -233,7 +218,7 @@ public class Grade implements Serializable {
     }
 
     public String getWeight() {
-        return weight;
+        return this.weight;
     }
 
     public Grade setWeight(String weight) {
@@ -242,7 +227,7 @@ public class Grade implements Serializable {
     }
 
     public String getDate() {
-        return date;
+        return this.date;
     }
 
     public Grade setDate(String date) {
@@ -251,7 +236,7 @@ public class Grade implements Serializable {
     }
 
     public String getTeacher() {
-        return teacher;
+        return this.teacher;
     }
 
     public Grade setTeacher(String teacher) {
@@ -259,22 +244,12 @@ public class Grade implements Serializable {
         return this;
     }
 
-    public String getSemester() {
-        return semester;
-    }
-
-    public Grade setSemester(String semester) {
-        this.semester = semester;
-        return this;
-    }
-
     public boolean getIsNew() {
         return this.isNew;
     }
 
-    public Grade setIsNew(boolean isNew) {
+    public void setIsNew(boolean isNew) {
         this.isNew = isNew;
-        return this;
     }
 
     public boolean getRead() {
@@ -286,6 +261,17 @@ public class Grade implements Serializable {
         return this;
     }
 
+
+    public Long getSubjectId() {
+        return this.subjectId;
+    }
+
+
+    public void setSubjectId(Long subjectId) {
+        this.subjectId = subjectId;
+    }
+
+
     /**
      * Convenient call for {@link org.greenrobot.greendao.AbstractDao#delete(Object)}.
      * Entity must attached to an entity context.
@@ -298,6 +284,7 @@ public class Grade implements Serializable {
         myDao.delete(this);
     }
 
+
     /**
      * Convenient call for {@link org.greenrobot.greendao.AbstractDao#refresh(Object)}.
      * Entity must attached to an entity context.
@@ -310,6 +297,7 @@ public class Grade implements Serializable {
         myDao.refresh(this);
     }
 
+
     /**
      * Convenient call for {@link org.greenrobot.greendao.AbstractDao#update(Object)}.
      * Entity must attached to an entity context.
@@ -322,6 +310,7 @@ public class Grade implements Serializable {
         myDao.update(this);
     }
 
+
     /** called by internal mechanisms, do not call yourself. */
     @Generated(hash = 1187286414)
     public void __setDaoSession(DaoSession daoSession) {

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Semester.java

@@ -0,0 +1,208 @@
+package io.github.wulkanowy.data.db.dao.entities;
+
+import org.greenrobot.greendao.DaoException;
+import org.greenrobot.greendao.annotation.Entity;
+import org.greenrobot.greendao.annotation.Generated;
+import org.greenrobot.greendao.annotation.Id;
+import org.greenrobot.greendao.annotation.Property;
+import org.greenrobot.greendao.annotation.ToMany;
+
+import java.util.List;
+
+@Entity(
+        nameInDb = "Semesters",
+        active = true
+)
+public class Semester {
+
+    @Id(autoincrement = true)
+    private Long id;
+
+    @Property(nameInDb = "diary_id")
+    private Long diaryId;
+
+    @Property(nameInDb = "current")
+    private boolean current;
+
+    @Property(nameInDb = "name")
+    private String name;
+
+    @Property(nameInDb = "value")
+    private String value;
+
+    @ToMany(referencedJoinProperty = "semesterId")
+    private List<Subject> subjectList;
+
+    @ToMany(referencedJoinProperty = "semesterId")
+    private List<Grade> gradeList;
+
+    /**
+     * Used to resolve relations
+     */
+    @Generated(hash = 2040040024)
+    private transient DaoSession daoSession;
+
+    /**
+     * Used for active entity operations.
+     */
+    @Generated(hash = 282930393)
+    private transient SemesterDao myDao;
+
+    @Generated(hash = 1661077309)
+    public Semester(Long id, Long diaryId, boolean current, String name, String value) {
+        this.id = id;
+        this.diaryId = diaryId;
+        this.current = current;
+        this.name = name;
+        this.value = value;
+    }
+
+    @Generated(hash = 58335877)
+    public Semester() {
+    }
+
+    public Long getId() {
+        return this.id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getDiaryId() {
+        return this.diaryId;
+    }
+
+    public Semester setDiaryId(Long diaryId) {
+        this.diaryId = diaryId;
+        return this;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public Semester setName(String name) {
+        this.name = name;
+        return this;
+    }
+
+    public String getValue() {
+        return this.value;
+    }
+
+    public Semester setValue(String value) {
+        this.value = value;
+        return this;
+    }
+
+    public boolean getCurrent() {
+        return this.current;
+    }
+
+    public Semester setCurrent(boolean current) {
+        this.current = current;
+        return this;
+    }
+
+    /**
+     * To-many relationship, resolved on first access (and after reset).
+     * Changes to to-many relations are not persisted, make changes to the target entity.
+     */
+    @Generated(hash = 723353662)
+    public List<Subject> getSubjectList() {
+        if (subjectList == null) {
+            final DaoSession daoSession = this.daoSession;
+            if (daoSession == null) {
+                throw new DaoException("Entity is detached from DAO context");
+            }
+            SubjectDao targetDao = daoSession.getSubjectDao();
+            List<Subject> subjectListNew = targetDao._querySemester_SubjectList(id);
+            synchronized (this) {
+                if (subjectList == null) {
+                    subjectList = subjectListNew;
+                }
+            }
+        }
+        return subjectList;
+    }
+
+    /**
+     * Resets a to-many relationship, making the next get call to query for a fresh result.
+     */
+    @Generated(hash = 594294258)
+    public synchronized void resetSubjectList() {
+        subjectList = null;
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#delete(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 128553479)
+    public void delete() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.delete(this);
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#refresh(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 1942392019)
+    public void refresh() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.refresh(this);
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#update(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 713229351)
+    public void update() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.update(this);
+    }
+
+    /**
+     * To-many relationship, resolved on first access (and after reset).
+     * Changes to to-many relations are not persisted, make changes to the target entity.
+     */
+    @Generated(hash = 390330007)
+    public List<Grade> getGradeList() {
+        if (gradeList == null) {
+            final DaoSession daoSession = this.daoSession;
+            if (daoSession == null) {
+                throw new DaoException("Entity is detached from DAO context");
+            }
+            GradeDao targetDao = daoSession.getGradeDao();
+            List<Grade> gradeListNew = targetDao._querySemester_GradeList(id);
+            synchronized (this) {
+                if (gradeList == null) {
+                    gradeList = gradeListNew;
+                }
+            }
+        }
+        return gradeList;
+    }
+
+    /** Resets a to-many relationship, making the next get call to query for a fresh result. */
+    @Generated(hash = 1939990047)
+    public synchronized void resetGradeList() {
+        gradeList = null;
+    }
+
+    /** called by internal mechanisms, do not call yourself. */
+    @Generated(hash = 676204164)
+    public void __setDaoSession(DaoSession daoSession) {
+        this.daoSession = daoSession;
+        myDao = daoSession != null ? daoSession.getSemesterDao() : null;
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Student.java

@@ -0,0 +1,178 @@
+package io.github.wulkanowy.data.db.dao.entities;
+
+import org.greenrobot.greendao.DaoException;
+import org.greenrobot.greendao.annotation.Entity;
+import org.greenrobot.greendao.annotation.Generated;
+import org.greenrobot.greendao.annotation.Id;
+import org.greenrobot.greendao.annotation.Property;
+import org.greenrobot.greendao.annotation.ToMany;
+
+import java.util.List;
+
+@Entity(
+        nameInDb = "Students",
+        active = true
+)
+public class Student {
+
+    @Id(autoincrement = true)
+    private Long id;
+
+    @Property(nameInDb = "symbol_id")
+    private Long symbolId;
+
+    @Property(nameInDb = "current")
+    private boolean current;
+
+    @Property(nameInDb = "real_id")
+    private String realId;
+
+    @Property(nameInDb = "name")
+    private String name;
+
+    @ToMany(referencedJoinProperty = "studentId")
+    private List<Diary> diaryList;
+
+    /**
+     * Used to resolve relations
+     */
+    @Generated(hash = 2040040024)
+    private transient DaoSession daoSession;
+
+    /**
+     * Used for active entity operations.
+     */
+    @Generated(hash = 1943931642)
+    private transient StudentDao myDao;
+
+    @Generated(hash = 1334215952)
+    public Student(Long id, Long symbolId, boolean current, String realId, String name) {
+        this.id = id;
+        this.symbolId = symbolId;
+        this.current = current;
+        this.realId = realId;
+        this.name = name;
+    }
+
+    @Generated(hash = 1556870573)
+    public Student() {
+    }
+
+    public Long getId() {
+        return this.id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getSymbolId() {
+        return this.symbolId;
+    }
+
+    public Student setSymbolId(Long symbolId) {
+        this.symbolId = symbolId;
+        return this;
+    }
+
+    public String getRealId() {
+        return this.realId;
+    }
+
+    public Student setRealId(String realId) {
+        this.realId = realId;
+        return this;
+    }
+
+    public String getName() {
+        return this.name;
+    }
+
+    public Student setName(String name) {
+        this.name = name;
+        return this;
+    }
+
+    public boolean getCurrent() {
+        return this.current;
+    }
+
+    public Student setCurrent(boolean current) {
+        this.current = current;
+        return this;
+    }
+
+    /**
+     * To-many relationship, resolved on first access (and after reset).
+     * Changes to to-many relations are not persisted, make changes to the target entity.
+     */
+    @Generated(hash = 508305571)
+    public List<Diary> getDiaryList() {
+        if (diaryList == null) {
+            final DaoSession daoSession = this.daoSession;
+            if (daoSession == null) {
+                throw new DaoException("Entity is detached from DAO context");
+            }
+            DiaryDao targetDao = daoSession.getDiaryDao();
+            List<Diary> diaryListNew = targetDao._queryStudent_DiaryList(id);
+            synchronized (this) {
+                if (diaryList == null) {
+                    diaryList = diaryListNew;
+                }
+            }
+        }
+        return diaryList;
+    }
+
+    /**
+     * Resets a to-many relationship, making the next get call to query for a fresh result.
+     */
+    @Generated(hash = 1078514341)
+    public synchronized void resetDiaryList() {
+        diaryList = null;
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#delete(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 128553479)
+    public void delete() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.delete(this);
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#refresh(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 1942392019)
+    public void refresh() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.refresh(this);
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#update(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 713229351)
+    public void update() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.update(this);
+    }
+
+    /** called by internal mechanisms, do not call yourself. */
+    @Generated(hash = 1701634981)
+    public void __setDaoSession(DaoSession daoSession) {
+        this.daoSession = daoSession;
+        myDao = daoSession != null ? daoSession.getStudentDao() : null;
+    }
+
+}

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Subject.java

@@ -18,21 +18,18 @@ public class Subject {
     @Id(autoincrement = true)
     private Long id;
 
-    @Property(nameInDb = "USER_ID")
+    @Property(nameInDb = "semester_id")
-    private Long userId;
+    private Long semesterId;
 
-    @Property(nameInDb = "NAME")
+    @Property(nameInDb = "name")
     private String name;
 
-    @Property(nameInDb = "PREDICTED_RATING")
+    @Property(nameInDb = "predicted_rating")
     private String predictedRating;
 
-    @Property(nameInDb = "FINAL_RATING")
+    @Property(nameInDb = "final_rating")
     private String finalRating;
 
-    @Property(nameInDb = "SEMESTER")
-    private String semester;
-
     @ToMany(referencedJoinProperty = "subjectId")
     private List<Grade> gradeList;
 
@@ -48,15 +45,14 @@ public class Subject {
     @Generated(hash = 1644932788)
     private transient SubjectDao myDao;
 
-    @Generated(hash = 396325764)
+    @Generated(hash = 1817932538)
-    public Subject(Long id, Long userId, String name, String predictedRating,
+    public Subject(Long id, Long semesterId, String name, String predictedRating,
-                   String finalRating, String semester) {
+                   String finalRating) {
         this.id = id;
-        this.userId = userId;
+        this.semesterId = semesterId;
         this.name = name;
         this.predictedRating = predictedRating;
         this.finalRating = finalRating;
-        this.semester = semester;
     }
 
     @Generated(hash = 1617906264)
@@ -64,25 +60,24 @@ public class Subject {
     }
 
     public Long getId() {
-        return id;
+        return this.id;
     }
 
-    public Subject setId(Long id) {
+    public void setId(Long id) {
         this.id = id;
-        return this;
     }
 
-    public Long getUserId() {
+    public Long getSemesterId() {
-        return userId;
+        return this.semesterId;
     }
 
-    public Subject setUserId(Long userId) {
+    public Subject setSemesterId(Long semesterId) {
-        this.userId = userId;
+        this.semesterId = semesterId;
         return this;
     }
 
     public String getName() {
-        return name;
+        return this.name;
     }
 
     public Subject setName(String name) {
@@ -91,7 +86,7 @@ public class Subject {
     }
 
     public String getPredictedRating() {
-        return predictedRating;
+        return this.predictedRating;
     }
 
     public Subject setPredictedRating(String predictedRating) {
@@ -100,7 +95,7 @@ public class Subject {
     }
 
     public String getFinalRating() {
-        return finalRating;
+        return this.finalRating;
     }
 
     public Subject setFinalRating(String finalRating) {
@@ -108,45 +103,6 @@ public class Subject {
         return this;
     }
 
-    public String getSemester() {
-        return semester;
-    }
-
-    public Subject setSemester(String semester) {
-        this.semester = semester;
-        return this;
-    }
-
-    /**
-     * To-many relationship, resolved on first access (and after reset).
-     * Changes to to-many relations are not persisted, make changes to the target entity.
-     */
-    @Generated(hash = 1358847893)
-    public List<Grade> getGradeList() {
-        if (gradeList == null) {
-            final DaoSession daoSession = this.daoSession;
-            if (daoSession == null) {
-                throw new DaoException("Entity is detached from DAO context");
-            }
-            GradeDao targetDao = daoSession.getGradeDao();
-            List<Grade> gradeListNew = targetDao._querySubject_GradeList(id);
-            synchronized (this) {
-                if (gradeList == null) {
-                    gradeList = gradeListNew;
-                }
-            }
-        }
-        return gradeList;
-    }
-
-    /**
-     * Resets a to-many relationship, making the next get call to query for a fresh result.
-     */
-    @Generated(hash = 1939990047)
-    public synchronized void resetGradeList() {
-        gradeList = null;
-    }
-
     /**
      * Convenient call for {@link org.greenrobot.greendao.AbstractDao#delete(Object)}.
      * Entity must attached to an entity context.
@@ -183,6 +139,34 @@ public class Subject {
         myDao.update(this);
     }
 
+    /**
+     * To-many relationship, resolved on first access (and after reset).
+     * Changes to to-many relations are not persisted, make changes to the target entity.
+     */
+    @Generated(hash = 1358847893)
+    public List<Grade> getGradeList() {
+        if (gradeList == null) {
+            final DaoSession daoSession = this.daoSession;
+            if (daoSession == null) {
+                throw new DaoException("Entity is detached from DAO context");
+            }
+            GradeDao targetDao = daoSession.getGradeDao();
+            List<Grade> gradeListNew = targetDao._querySubject_GradeList(id);
+            synchronized (this) {
+                if (gradeList == null) {
+                    gradeList = gradeListNew;
+                }
+            }
+        }
+        return gradeList;
+    }
+
+    /** Resets a to-many relationship, making the next get call to query for a fresh result. */
+    @Generated(hash = 1939990047)
+    public synchronized void resetGradeList() {
+        gradeList = null;
+    }
+
     /** called by internal mechanisms, do not call yourself. */
     @Generated(hash = 937984622)
     public void __setDaoSession(DaoSession daoSession) {

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Symbol.java

@@ -0,0 +1,191 @@
+package io.github.wulkanowy.data.db.dao.entities;
+
+import org.greenrobot.greendao.DaoException;
+import org.greenrobot.greendao.annotation.Entity;
+import org.greenrobot.greendao.annotation.Generated;
+import org.greenrobot.greendao.annotation.Id;
+import org.greenrobot.greendao.annotation.Property;
+import org.greenrobot.greendao.annotation.ToMany;
+
+import java.util.List;
+
+@Entity(
+        nameInDb = "Symbols",
+        active = true
+)
+public class Symbol {
+
+    @Id(autoincrement = true)
+    private Long id;
+
+    @Property(nameInDb = "user_id")
+    private Long userId;
+
+    @Property(nameInDb = "host")
+    private String host;
+
+    @Property(nameInDb = "school_id")
+    private String schoolId;
+
+    @Property(nameInDb = "symbol")
+    private String symbol;
+
+    @Property(nameInDb = "type")
+    private String type;
+
+    @ToMany(referencedJoinProperty = "symbolId")
+    private List<Student> studentList;
+
+    /**
+     * Used to resolve relations
+     */
+    @Generated(hash = 2040040024)
+    private transient DaoSession daoSession;
+
+    /**
+     * Used for active entity operations.
+     */
+    @Generated(hash = 684907977)
+    private transient SymbolDao myDao;
+
+    @Generated(hash = 242774339)
+    public Symbol(Long id, Long userId, String host, String schoolId, String symbol,
+                  String type) {
+        this.id = id;
+        this.userId = userId;
+        this.host = host;
+        this.schoolId = schoolId;
+        this.symbol = symbol;
+        this.type = type;
+    }
+
+    @Generated(hash = 460475327)
+    public Symbol() {
+    }
+
+    public Long getId() {
+        return this.id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public Long getUserId() {
+        return this.userId;
+    }
+
+    public Symbol setUserId(Long userId) {
+        this.userId = userId;
+        return this;
+    }
+
+    public String getHost() {
+        return this.host;
+    }
+
+    public Symbol setHost(String host) {
+        this.host = host;
+        return this;
+    }
+
+    public String getSchoolId() {
+        return this.schoolId;
+    }
+
+    public Symbol setSchoolId(String schoolId) {
+        this.schoolId = schoolId;
+        return this;
+    }
+
+    public String getSymbol() {
+        return this.symbol;
+    }
+
+    public Symbol setSymbol(String symbol) {
+        this.symbol = symbol;
+        return this;
+    }
+
+    public String getType() {
+        return this.type;
+    }
+
+    public Symbol setType(String type) {
+        this.type = type;
+        return this;
+    }
+
+    /**
+     * To-many relationship, resolved on first access (and after reset).
+     * Changes to to-many relations are not persisted, make changes to the target entity.
+     */
+    @Generated(hash = 604366458)
+    public List<Student> getStudentList() {
+        if (studentList == null) {
+            final DaoSession daoSession = this.daoSession;
+            if (daoSession == null) {
+                throw new DaoException("Entity is detached from DAO context");
+            }
+            StudentDao targetDao = daoSession.getStudentDao();
+            List<Student> studentListNew = targetDao._querySymbol_StudentList(id);
+            synchronized (this) {
+                if (studentList == null) {
+                    studentList = studentListNew;
+                }
+            }
+        }
+        return studentList;
+    }
+
+    /**
+     * Resets a to-many relationship, making the next get call to query for a fresh result.
+     */
+    @Generated(hash = 1628625923)
+    public synchronized void resetStudentList() {
+        studentList = null;
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#delete(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 128553479)
+    public void delete() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.delete(this);
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#refresh(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 1942392019)
+    public void refresh() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.refresh(this);
+    }
+
+    /**
+     * Convenient call for {@link org.greenrobot.greendao.AbstractDao#update(Object)}.
+     * Entity must attached to an entity context.
+     */
+    @Generated(hash = 713229351)
+    public void update() {
+        if (myDao == null) {
+            throw new DaoException("Entity is detached from DAO context");
+        }
+        myDao.update(this);
+    }
+
+    /** called by internal mechanisms, do not call yourself. */
+    @Generated(hash = 632145708)
+    public void __setDaoSession(DaoSession daoSession) {
+        this.daoSession = daoSession;
+        myDao = daoSession != null ? daoSession.getSymbolDao() : null;
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/TimetableLesson.java

@@ -16,58 +16,58 @@ import java.io.Serializable;
 )
 public class TimetableLesson implements Serializable {
 
+    private static final long serialVersionUID = 42L;
+
     @Id(autoincrement = true)
     private Long id;
 
-    @Property(nameInDb = "DAY_ID")
+    @Property(nameInDb = "day_id")
     private Long dayId;
 
-    @Property(nameInDb = "NUMBER_OF_LESSON")
+    @Property(nameInDb = "number")
     private String number;
 
-    @Property(nameInDb = "SUBJECT_NAME")
+    @Property(nameInDb = "subject")
     private String subject = "";
 
-    @Property(nameInDb = "TEACHER")
+    @Property(nameInDb = "teacher")
     private String teacher = "";
 
-    @Property(nameInDb = "ROOM")
+    @Property(nameInDb = "room")
     private String room = "";
 
-    @Property(nameInDb = "DESCRIPTION")
+    @Property(nameInDb = "description")
     private String description = "";
 
-    @Property(nameInDb = "GROUP_NAME")
+    @Property(nameInDb = "group")
-    private String groupName = "";
+    private String group = "";
 
-    @Property(nameInDb = "START_TIME")
+    @Property(nameInDb = "start_time")
     private String startTime = "";
 
-    @Property(nameInDb = "END_TIME")
+    @Property(nameInDb = "end_time")
     private String endTime = "";
 
-    @Property(nameInDb = "DATE")
+    @Property(nameInDb = "date")
     private String date = "";
 
-    @Property(nameInDb = "IS_EMPTY")
+    @Property(nameInDb = "empty")
-    private boolean isEmpty = false;
+    private boolean empty = false;
 
-    @Property(nameInDb = "IS_DIVISION_INTO_GROUP")
+    @Property(nameInDb = "division_into_groups")
-    private boolean isDivisionIntoGroups = false;
+    private boolean divisionIntoGroups = false;
 
-    @Property(nameInDb = "IS_PLANNING")
+    @Property(nameInDb = "planning")
-    private boolean isPlanning = false;
+    private boolean planning = false;
 
-    @Property(nameInDb = "IS_REALIZED")
+    @Property(nameInDb = "realized")
-    private boolean isRealized = false;
+    private boolean realized = false;
 
-    @Property(nameInDb = "IS_MOVED_CANCELED")
+    @Property(nameInDb = "moved_canceled")
-    private boolean isMovedOrCanceled = false;
+    private boolean movedOrCanceled = false;
 
-    @Property(nameInDb = "IS_NEW_MOVED_IN_CANCELED")
+    @Property(nameInDb = "new_moved_in_canceled")
-    private boolean isNewMovedInOrChanged = false;
+    private boolean newMovedInOrChanged = false;
-
-    private static final long serialVersionUID = 42L;
 
     /**
      * Used to resolve relations
@@ -81,12 +81,12 @@ public class TimetableLesson implements Serializable {
     @Generated(hash = 1119360138)
     private transient TimetableLessonDao myDao;
 
-    @Generated(hash = 627457324)
+    @Generated(hash = 1955911128)
     public TimetableLesson(Long id, Long dayId, String number, String subject,
-                           String teacher, String room, String description, String groupName,
+                           String teacher, String room, String description, String group,
-                           String startTime, String endTime, String date, boolean isEmpty,
+                           String startTime, String endTime, String date, boolean empty,
-                           boolean isDivisionIntoGroups, boolean isPlanning, boolean isRealized,
+                           boolean divisionIntoGroups, boolean planning, boolean realized,
-                           boolean isMovedOrCanceled, boolean isNewMovedInOrChanged) {
+                           boolean movedOrCanceled, boolean newMovedInOrChanged) {
         this.id = id;
         this.dayId = dayId;
         this.number = number;
@@ -94,16 +94,16 @@ public class TimetableLesson implements Serializable {
         this.teacher = teacher;
         this.room = room;
         this.description = description;
-        this.groupName = groupName;
+        this.group = group;
         this.startTime = startTime;
         this.endTime = endTime;
         this.date = date;
-        this.isEmpty = isEmpty;
+        this.empty = empty;
-        this.isDivisionIntoGroups = isDivisionIntoGroups;
+        this.divisionIntoGroups = divisionIntoGroups;
-        this.isPlanning = isPlanning;
+        this.planning = planning;
-        this.isRealized = isRealized;
+        this.realized = realized;
-        this.isMovedOrCanceled = isMovedOrCanceled;
+        this.movedOrCanceled = movedOrCanceled;
-        this.isNewMovedInOrChanged = isNewMovedInOrChanged;
+        this.newMovedInOrChanged = newMovedInOrChanged;
     }
 
     @Generated(hash = 1878030142)
@@ -122,8 +122,9 @@ public class TimetableLesson implements Serializable {
         return this.dayId;
     }
 
-    public void setDayId(Long dayId) {
+    public TimetableLesson setDayId(Long dayId) {
         this.dayId = dayId;
+        return this;
     }
 
     public String getNumber() {
@@ -171,12 +172,12 @@ public class TimetableLesson implements Serializable {
         return this;
     }
 
-    public String getGroupName() {
+    public String getGroup() {
-        return this.groupName;
+        return this.group;
     }
 
-    public TimetableLesson setGroupName(String groupName) {
+    public TimetableLesson setGroup(String group) {
-        this.groupName = groupName;
+        this.group = group;
         return this;
     }
 
@@ -207,57 +208,57 @@ public class TimetableLesson implements Serializable {
         return this;
     }
 
-    public boolean getIsEmpty() {
+    public boolean getEmpty() {
-        return this.isEmpty;
+        return this.empty;
     }
 
-    public TimetableLesson setEmpty(boolean isEmpty) {
+    public TimetableLesson setEmpty(boolean empty) {
-        this.isEmpty = isEmpty;
+        this.empty = empty;
         return this;
     }
 
-    public boolean getIsDivisionIntoGroups() {
+    public boolean getDivisionIntoGroups() {
-        return this.isDivisionIntoGroups;
+        return this.divisionIntoGroups;
     }
 
-    public TimetableLesson setDivisionIntoGroups(boolean isDivisionIntoGroups) {
+    public TimetableLesson setDivisionIntoGroups(boolean divisionIntoGroups) {
-        this.isDivisionIntoGroups = isDivisionIntoGroups;
+        this.divisionIntoGroups = divisionIntoGroups;
         return this;
     }
 
-    public boolean getIsPlanning() {
+    public boolean getPlanning() {
-        return this.isPlanning;
+        return this.planning;
     }
 
-    public TimetableLesson setPlanning(boolean isPlanning) {
+    public TimetableLesson setPlanning(boolean planning) {
-        this.isPlanning = isPlanning;
+        this.planning = planning;
         return this;
     }
 
-    public boolean getIsRealized() {
+    public boolean getRealized() {
-        return this.isRealized;
+        return this.realized;
     }
 
-    public TimetableLesson setRealized(boolean isRealized) {
+    public TimetableLesson setRealized(boolean realized) {
-        this.isRealized = isRealized;
+        this.realized = realized;
         return this;
     }
 
-    public boolean getIsMovedOrCanceled() {
+    public boolean getMovedOrCanceled() {
-        return this.isMovedOrCanceled;
+        return this.movedOrCanceled;
     }
 
-    public TimetableLesson setMovedOrCanceled(boolean isMovedOrCanceled) {
+    public TimetableLesson setMovedOrCanceled(boolean movedOrCanceled) {
-        this.isMovedOrCanceled = isMovedOrCanceled;
+        this.movedOrCanceled = movedOrCanceled;
         return this;
     }
 
-    public boolean getIsNewMovedInOrChanged() {
+    public boolean getNewMovedInOrChanged() {
-        return this.isNewMovedInOrChanged;
+        return this.newMovedInOrChanged;
     }
 
-    public TimetableLesson setNewMovedInOrChanged(boolean isNewMovedInOrChanged) {
+    public TimetableLesson setNewMovedInOrChanged(boolean newMovedInOrChanged) {
-        this.isNewMovedInOrChanged = isNewMovedInOrChanged;
+        this.newMovedInOrChanged = newMovedInOrChanged;
         return this;
     }
 
@@ -297,30 +298,6 @@ public class TimetableLesson implements Serializable {
         myDao.update(this);
     }
 
-    public void setIsEmpty(boolean isEmpty) {
-        this.isEmpty = isEmpty;
-    }
-
-    public void setIsDivisionIntoGroups(boolean isDivisionIntoGroups) {
-        this.isDivisionIntoGroups = isDivisionIntoGroups;
-    }
-
-    public void setIsPlanning(boolean isPlanning) {
-        this.isPlanning = isPlanning;
-    }
-
-    public void setIsRealized(boolean isRealized) {
-        this.isRealized = isRealized;
-    }
-
-    public void setIsMovedOrCanceled(boolean isMovedOrCanceled) {
-        this.isMovedOrCanceled = isMovedOrCanceled;
-    }
-
-    public void setIsNewMovedInOrChanged(boolean isNewMovedInOrChanged) {
-        this.isNewMovedInOrChanged = isNewMovedInOrChanged;
-    }
-
     /** called by internal mechanisms, do not call yourself. */
     @Generated(hash = 1885258429)
     public void __setDaoSession(DaoSession daoSession) {

app/src/main/java/io/github/wulkanowy/data/db/dao/entities/Week.java

@@ -13,44 +13,48 @@ import java.util.List;
 @Entity(
         nameInDb = "Weeks",
         active = true,
-        indexes ={@Index(value = "userId,startDayDate", unique = true)}
+        indexes = {@Index(value = "diaryId,startDayDate", unique = true)}
 )
 public class Week {
 
     @Id(autoincrement = true)
     private Long id;
 
-    @Property(nameInDb = "USER_ID")
+    @Property(nameInDb = "diary_id")
-    private Long userId;
+    private Long diaryId;
 
-    @Property(nameInDb = "START_DATE")
+    @Property(nameInDb = "start_day_date")
     private String startDayDate = "";
 
-    @Property(nameInDb = "IS_ATTENDANCE_SYNCED")
+    @Property(nameInDb = "attendance_synced")
-    private boolean isAttendanceSynced = false;
+    private boolean attendanceSynced = false;
 
-    @Property(nameInDb = "IS_TIMETABLE_SYNCED")
+    @Property(nameInDb = "timetable_synced")
-    private boolean isTimetableSynced = false;
+    private boolean timetableSynced = false;
 
     @ToMany(referencedJoinProperty = "weekId")
     private List<Day> dayList;
 
-    /** Used to resolve relations */
+    /**
+     * Used to resolve relations
+     */
     @Generated(hash = 2040040024)
     private transient DaoSession daoSession;
 
-    /** Used for active entity operations. */
+    /**
+     * Used for active entity operations.
+     */
     @Generated(hash = 1019310398)
     private transient WeekDao myDao;
 
-    @Generated(hash = 1745118398)
+    @Generated(hash = 1608180902)
-    public Week(Long id, Long userId, String startDayDate, boolean isAttendanceSynced,
+    public Week(Long id, Long diaryId, String startDayDate,
-            boolean isTimetableSynced) {
+                boolean attendanceSynced, boolean timetableSynced) {
         this.id = id;
-        this.userId = userId;
+        this.diaryId = diaryId;
         this.startDayDate = startDayDate;
-        this.isAttendanceSynced = isAttendanceSynced;
+        this.attendanceSynced = attendanceSynced;
-        this.isTimetableSynced = isTimetableSynced;
+        this.timetableSynced = timetableSynced;
     }
 
     @Generated(hash = 2135529658)
@@ -66,12 +70,12 @@ public class Week {
         return this;
     }
 
-    public Long getUserId() {
+    public Long getDiaryId() {
-        return userId;
+        return diaryId;
     }
 
-    public Week setUserId(Long userId) {
+    public Week setDiaryId(Long diaryId) {
-        this.userId = userId;
+        this.diaryId = diaryId;
         return this;
     }
 
@@ -84,20 +88,22 @@ public class Week {
         return this;
     }
 
-    public boolean getIsAttendanceSynced() {
+    public boolean isAttendanceSynced() {
-        return this.isAttendanceSynced;
+        return attendanceSynced;
     }
 
-    public void setIsAttendanceSynced(boolean isAttendanceSynced) {
+    public Week setAttendanceSynced(boolean attendanceSynced) {
-        this.isAttendanceSynced = isAttendanceSynced;
+        this.attendanceSynced = attendanceSynced;
+        return this;
     }
 
-    public boolean getIsTimetableSynced() {
+    public boolean isTimetableSynced() {
-        return this.isTimetableSynced;
+        return timetableSynced;
     }
 
-    public void setIsTimetableSynced(boolean isTimetableSynced) {
+    public Week setTimetableSynced(boolean timetableSynced) {
-        this.isTimetableSynced = isTimetableSynced;
+        this.timetableSynced = timetableSynced;
+        return this;
     }
 
     /**
@@ -122,7 +128,9 @@ public class Week {
         return dayList;
     }
 
-    /** Resets a to-many relationship, making the next get call to query for a fresh result. */
+    /**
+     * Resets a to-many relationship, making the next get call to query for a fresh result.
+     */
     @Generated(hash = 1010399236)
     public synchronized void resetDayList() {
         dayList = null;
@@ -164,6 +172,14 @@ public class Week {
         myDao.update(this);
     }
 
+    public boolean getAttendanceSynced() {
+        return this.attendanceSynced;
+    }
+
+    public boolean getTimetableSynced() {
+        return this.timetableSynced;
+    }
+
     /** called by internal mechanisms, do not call yourself. */
     @Generated(hash = 665278367)
     public void __setDaoSession(DaoSession daoSession) {

app/src/main/java/io/github/wulkanowy/data/db/dao/migrations/Migration23.java

@@ -100,7 +100,7 @@ public class Migration23 implements DbHelper.Migration {
     private void insertDiaries(Database db, List<Diary> list) {
         for (Diary diary : list) {
             db.execSQL("INSERT INTO Diaries(STUDENT_ID, NAME, VALUE, IS_CURRENT) VALUES(" +
-                    "\"" + diary.getStudentId() + "\"," +
+                    "\"" + diary.getId() + "\"," +
                     "\"" + diary.getName() + "\"," +
                     "\"" + diary.getId() + "\"," +
                     "\"" + (diary.isCurrent() ? "1" : "0") + "\"" +

app/src/main/java/io/github/wulkanowy/data/db/dao/migrations/Migration24.java

@@ -0,0 +1,20 @@
+package io.github.wulkanowy.data.db.dao.migrations;
+
+import org.greenrobot.greendao.database.Database;
+
+import io.github.wulkanowy.api.Vulcan;
+import io.github.wulkanowy.data.db.dao.DbHelper;
+import io.github.wulkanowy.data.db.shared.SharedPrefContract;
+
+public class Migration24 implements DbHelper.Migration {
+
+    @Override
+    public Integer getVersion() {
+        return 24;
+    }
+
+    @Override
+    public void runMigration(final Database db, final SharedPrefContract sharedPref, final Vulcan vulcan) throws Exception {
+        throw new Exception("No migrations");
+    }
+}

app/src/main/java/io/github/wulkanowy/data/db/resources/AppResources.java

@@ -62,27 +62,27 @@ public class AppResources implements ResourcesContract {
     public String getAttendanceLessonDescription(AttendanceLesson lesson) {
         int id = R.string.attendance_present;
 
-        if (lesson.getIsAbsenceForSchoolReasons()) {
+        if (lesson.getAbsenceForSchoolReasons()) {
             id = R.string.attendance_absence_for_school_reasons;
         }
 
-        if (lesson.getIsAbsenceExcused()) {
+        if (lesson.getAbsenceExcused()) {
             id = R.string.attendance_absence_excused;
         }
 
-        if (lesson.getIsAbsenceUnexcused()) {
+        if (lesson.getAbsenceUnexcused()) {
             id = R.string.attendance_absence_unexcused;
         }
 
-        if (lesson.getIsExemption()) {
+        if (lesson.getExemption()) {
             id = R.string.attendance_exemption;
         }
 
-        if (lesson.getIsExcusedLateness()) {
+        if (lesson.getExcusedLateness()) {
             id = R.string.attendance_excused_lateness;
         }
 
-        if (lesson.getIsUnexcusedLateness()) {
+        if (lesson.getUnexcusedLateness()) {
             id = R.string.attendance_unexcused_lateness;
         }
 

app/src/main/java/io/github/wulkanowy/data/sync/SyncContract.java

@@ -7,5 +7,5 @@ import io.github.wulkanowy.api.VulcanException;
 
 public interface SyncContract {
 
-    void sync() throws VulcanException, IOException, ParseException;
+    void sync(long semesterId) throws VulcanException, IOException, ParseException;
 }

app/src/main/java/io/github/wulkanowy/data/sync/account/AccountSync.java

@@ -14,6 +14,11 @@ import io.github.wulkanowy.data.db.dao.entities.Account;
 import io.github.wulkanowy.data.db.dao.entities.DaoSession;
 import io.github.wulkanowy.data.db.dao.entities.Diary;
 import io.github.wulkanowy.data.db.dao.entities.DiaryDao;
+import io.github.wulkanowy.data.db.dao.entities.Semester;
+import io.github.wulkanowy.data.db.dao.entities.Student;
+import io.github.wulkanowy.data.db.dao.entities.StudentDao;
+import io.github.wulkanowy.data.db.dao.entities.Symbol;
+import io.github.wulkanowy.data.db.dao.entities.SymbolDao;
 import io.github.wulkanowy.data.db.shared.SharedPrefContract;
 import io.github.wulkanowy.di.annotations.ApplicationContext;
 import io.github.wulkanowy.utils.DataObjectConverter;
@@ -45,25 +50,73 @@ public class AccountSync implements AccountSyncContract {
     public void registerUser(String email, String password, String symbol)
             throws VulcanException, IOException, CryptoException {
 
-        LogUtils.debug("Register new user email=" + email);
-
         vulcan.setCredentials(email, password, symbol, null, null, null);
 
-        Account account = new Account()
+        daoSession.getDatabase().beginTransaction();
-                .setName(vulcan.getBasicInformation().getPersonalData().getFirstAndLastName())
-                .setEmail(email)
-                .setPassword(Scrambler.encrypt(email, password, context))
-                .setSymbol(vulcan.getSymbol())
-                .setSchoolId(vulcan.getStudentAndParent().getSchoolID())
-                .setRealId(vulcan.getStudentAndParent().getStudentID());
 
-        List<Diary> diaryList = DataObjectConverter.diariesToDiaryEntities(
+        try {
-                vulcan.getStudentAndParent().getDiaries());
+            Account account = insertAccount(email, password);
-
+            Symbol symbolEntity = insertSymbol(account);
-        daoSession.getAccountDao().insert(account);
+            insertStudents(symbolEntity);
-        daoSession.getDiaryDao().insertInTx(diaryList);
+            insertDiaries(symbolEntity);
+            insertSemesters();
 
             sharedPref.setCurrentUserId(account.getId());
+
+            daoSession.getDatabase().setTransactionSuccessful();
+        } finally {
+            daoSession.getDatabase().endTransaction();
+        }
+    }
+
+    private Account insertAccount(String email, String password) throws CryptoException {
+        LogUtils.debug("Register account: " + email);
+        Account account = new Account()
+                .setEmail(email)
+                .setPassword(Scrambler.encrypt(email, password, context));
+        daoSession.getAccountDao().insert(account);
+        return account;
+    }
+
+    private Symbol insertSymbol(Account account) throws VulcanException, IOException {
+        LogUtils.debug("Register symbol: " + vulcan.getSymbol());
+        Symbol symbol = new Symbol()
+                .setUserId(account.getId())
+                .setSchoolId(vulcan.getStudentAndParent().getSchoolID())
+                .setSymbol(vulcan.getSymbol());
+        daoSession.getSymbolDao().insert(symbol);
+
+        return symbol;
+    }
+
+    private void insertStudents(Symbol symbol) throws VulcanException, IOException {
+        List<Student> studentList = DataObjectConverter.studentsToStudentEntities(
+                vulcan.getStudentAndParent().getStudents(),
+                symbol.getId()
+        );
+        LogUtils.debug("Register students: " + studentList.size());
+        daoSession.getStudentDao().insertInTx(studentList);
+    }
+
+    private void insertDiaries(Symbol symbolEntity) throws VulcanException, IOException {
+        List<Diary> diaryList = DataObjectConverter.diariesToDiaryEntities(
+                vulcan.getStudentAndParent().getDiaries(),
+                daoSession.getStudentDao().queryBuilder().where(
+                        StudentDao.Properties.SymbolId.eq(symbolEntity.getId()),
+                        StudentDao.Properties.Current.eq(true)
+                ).unique().getId());
+        LogUtils.debug("Register diaries: " + diaryList.size());
+        daoSession.getDiaryDao().insertInTx(diaryList);
+    }
+
+    private void insertSemesters() throws VulcanException, IOException {
+        List<Semester> semesterList = DataObjectConverter.semestersToSemesterEntities(
+                vulcan.getStudentAndParent().getSemesters(),
+                daoSession.getDiaryDao().queryBuilder().where(
+                        DiaryDao.Properties.Current.eq(true)
+                ).unique().getId());
+        LogUtils.debug("Register semesters: " + semesterList.size());
+        daoSession.getSemesterDao().insertInTx(semesterList);
     }
 
     @Override
@@ -78,14 +131,26 @@ public class AccountSync implements AccountSyncContract {
         LogUtils.debug("Initialization current user id=" + userId);
 
         Account account = daoSession.getAccountDao().load(userId);
+        String email = account.getEmail();
+        String pass = Scrambler.decrypt(account.getEmail(), account.getPassword());
 
-        vulcan.setCredentials(account.getEmail(),
+        Symbol symbolE = daoSession.getSymbolDao().queryBuilder().where(
-                Scrambler.decrypt(account.getEmail(), account.getPassword()),
+                SymbolDao.Properties.UserId.eq(account.getId())).unique();
-                account.getSymbol(),
+        String symbol = symbolE.getSymbol();
-                account.getSchoolId(),
+        String schoolId = symbolE.getSchoolId();
-                account.getRealId(),
+
-                daoSession.getDiaryDao().queryBuilder()
+        Student studentE = daoSession.getStudentDao().queryBuilder().where(
-                        .where(DiaryDao.Properties.IsCurrent.eq(true)).unique().getValue()
+                StudentDao.Properties.SymbolId.eq(symbolE.getId()),
-        );
+                StudentDao.Properties.Current.eq(true)
+        ).unique();
+        String studentId = studentE.getRealId();
+
+        Diary diaryE = daoSession.getDiaryDao().queryBuilder().where(
+                DiaryDao.Properties.StudentId.eq(studentE.getId()),
+                DiaryDao.Properties.Current.eq(true)
+        ).unique();
+        String diaryId = diaryE.getValue();
+
+        vulcan.setCredentials(email, pass, symbol, schoolId, studentId, diaryId);
     }
 }

app/src/main/java/io/github/wulkanowy/data/sync/attendance/AttendanceSync.java

@@ -18,7 +18,6 @@ import io.github.wulkanowy.data.db.dao.entities.Day;
 import io.github.wulkanowy.data.db.dao.entities.DayDao;
 import io.github.wulkanowy.data.db.dao.entities.Week;
 import io.github.wulkanowy.data.db.dao.entities.WeekDao;
-import io.github.wulkanowy.data.db.shared.SharedPrefContract;
 import io.github.wulkanowy.utils.DataObjectConverter;
 import io.github.wulkanowy.utils.LogUtils;
 import io.github.wulkanowy.utils.TimeUtils;
@@ -28,27 +27,24 @@ public class AttendanceSync implements AttendanceSyncContract {
 
     private final DaoSession daoSession;
 
-    private final SharedPrefContract sharedPref;
-
     private final Vulcan vulcan;
 
-    private long userId;
+    private long diaryId;
 
     @Inject
-    AttendanceSync(DaoSession daoSession, SharedPrefContract sharedPref, Vulcan vulcan) {
+    AttendanceSync(DaoSession daoSession, Vulcan vulcan) {
         this.daoSession = daoSession;
-        this.sharedPref = sharedPref;
         this.vulcan = vulcan;
     }
 
     @Override
-    public void syncAttendance() throws IOException, ParseException, VulcanException {
+    public void syncAttendance(long diaryId) throws IOException, ParseException, VulcanException {
-        syncAttendance(null);
+        syncAttendance(diaryId, null);
     }
 
     @Override
-    public void syncAttendance(String date) throws IOException, ParseException, VulcanException {
+    public void syncAttendance(long diaryId, String date) throws IOException, ParseException, VulcanException {
-        this.userId = sharedPref.getCurrentUserId();
+        this.diaryId = diaryId;
 
         io.github.wulkanowy.api.generic.Week<io.github.wulkanowy.api.generic.Day> weekApi = getWeekFromApi(getNormalizedDate(date));
         Week weekDb = getWeekFromDb(weekApi.getStartDayDate());
@@ -72,22 +68,22 @@ public class AttendanceSync implements AttendanceSyncContract {
     }
 
     private Week getWeekFromDb(String date) {
-        return daoSession.getWeekDao()
+        return daoSession.getWeekDao().queryBuilder().where(
-                .queryBuilder()
+                WeekDao.Properties.DiaryId.eq(diaryId),
-                .where(WeekDao.Properties.UserId.eq(userId), WeekDao.Properties.StartDayDate.eq(date))
+                WeekDao.Properties.StartDayDate.eq(date)
-                .unique();
+        ).unique();
     }
 
     private Long updateWeekInDb(Week dbWeekEntity, io.github.wulkanowy.api.generic.Week fromApi) {
         if (dbWeekEntity != null) {
-            dbWeekEntity.setIsAttendanceSynced(true);
+            dbWeekEntity.setAttendanceSynced(true);
             dbWeekEntity.update();
 
             return dbWeekEntity.getId();
         }
 
-        Week apiWeekEntity = DataObjectConverter.weekToWeekEntity(fromApi).setUserId(userId);
+        Week apiWeekEntity = DataObjectConverter.weekToWeekEntity(fromApi).setDiaryId(diaryId);
-        apiWeekEntity.setIsAttendanceSynced(true);
+        apiWeekEntity.setAttendanceSynced(true);
 
         return daoSession.getWeekDao().insert(apiWeekEntity);
     }
@@ -97,7 +93,7 @@ public class AttendanceSync implements AttendanceSyncContract {
 
         for (io.github.wulkanowy.api.generic.Day dayFromApi : dayListFromApi) {
 
-            Day dbDayEntity = getDayFromDb(dayFromApi.getDate());
+            Day dbDayEntity = getDayFromDb(dayFromApi.getDate(), weekId);
 
             Day apiDayEntity = DataObjectConverter.dayToDayEntity(dayFromApi);
 
@@ -109,11 +105,12 @@ public class AttendanceSync implements AttendanceSyncContract {
         return updatedLessonList;
     }
 
-    private Day getDayFromDb(String date) {
+    private Day getDayFromDb(String date, long weekId) {
-        return daoSession.getDayDao()
+        return daoSession.getDayDao().queryBuilder()
-                .queryBuilder()
+                .where(
-                .where(DayDao.Properties.UserId.eq(userId), DayDao.Properties.Date.eq(date))
+                        DayDao.Properties.WeekId.eq(weekId),
-                .unique();
+                        DayDao.Properties.Date.eq(date)
+                ).unique();
     }
 
     private long updateDay(Day dbDayEntity, Day apiDayEntity, long weekId) {
@@ -121,7 +118,6 @@ public class AttendanceSync implements AttendanceSyncContract {
             return dbDayEntity.getId();
         }
 
-        apiDayEntity.setUserId(userId);
         apiDayEntity.setWeekId(weekId);
 
         return daoSession.getDayDao().insert(apiDayEntity);

app/src/main/java/io/github/wulkanowy/data/sync/attendance/AttendanceSyncContract.java

@@ -7,7 +7,7 @@ import io.github.wulkanowy.api.VulcanException;
 
 public interface AttendanceSyncContract {
 
-    void syncAttendance(String date) throws IOException, ParseException, VulcanException;
+    void syncAttendance(long diaryId, String date) throws IOException, ParseException, VulcanException;
 
-    void syncAttendance() throws IOException, ParseException, VulcanException;
+    void syncAttendance(long diaryId) throws IOException, ParseException, VulcanException;
 }

app/src/main/java/io/github/wulkanowy/data/sync/grades/GradeSync.java

@@ -10,11 +10,10 @@ import javax.inject.Singleton;
 
 import io.github.wulkanowy.api.Vulcan;
 import io.github.wulkanowy.api.VulcanException;
-import io.github.wulkanowy.data.db.dao.entities.Account;
 import io.github.wulkanowy.data.db.dao.entities.DaoSession;
 import io.github.wulkanowy.data.db.dao.entities.Grade;
+import io.github.wulkanowy.data.db.dao.entities.Semester;
 import io.github.wulkanowy.data.db.dao.entities.SubjectDao;
-import io.github.wulkanowy.data.db.shared.SharedPrefContract;
 import io.github.wulkanowy.data.sync.SyncContract;
 import io.github.wulkanowy.utils.DataObjectConverter;
 import io.github.wulkanowy.utils.EntitiesCompare;
@@ -27,65 +26,59 @@ public class GradeSync implements SyncContract {
 
     private final Vulcan vulcan;
 
-    private final SharedPrefContract sharedPref;
+    private long semesterId;
-
-    private Long userId;
 
     @Inject
-    GradeSync(DaoSession daoSession, SharedPrefContract sharedPref, Vulcan vulcan) {
+    GradeSync(DaoSession daoSession, Vulcan vulcan) {
         this.daoSession = daoSession;
-        this.sharedPref = sharedPref;
         this.vulcan = vulcan;
     }
 
     @Override
-    public void sync() throws IOException, VulcanException, ParseException {
+    public void sync(long semesterId) throws IOException, VulcanException, ParseException {
+        this.semesterId = semesterId;
 
-        userId = sharedPref.getCurrentUserId();
+        Semester semester = daoSession.getSemesterDao().load(semesterId);
+        resetSemesterRelations(semester);
 
-        Account account = daoSession.getAccountDao().load(userId);
+        List<Grade> lastList = getUpdatedList(getComparedList(semester));
-        resetAccountRelations(account);
 
-        List<Grade> lastList = getUpdatedList(getComparedList(account));
+        daoSession.getGradeDao().deleteInTx(semester.getGradeList());
-
-        daoSession.getGradeDao().deleteInTx(account.getGradeList());
         daoSession.getGradeDao().insertInTx(lastList);
 
         LogUtils.debug("Synchronization grades (amount = " + lastList.size() + ")");
     }
 
-    private void resetAccountRelations(Account account) {
+    private void resetSemesterRelations(Semester semester) {
-        account.resetSubjectList();
+        semester.resetSubjectList();
-        account.resetGradeList();
+        semester.resetGradeList();
     }
 
     private List<Grade> getUpdatedList(List<Grade> comparedList) {
         List<Grade> updatedList = new ArrayList<>();
 
         for (Grade grade : comparedList) {
-            grade.setUserId(userId);
+            grade.setSemesterId(semesterId);
             grade.setSubjectId(getSubjectId(grade.getSubject()));
             updatedList.add(grade);
         }
+
         return updatedList;
     }
 
-    private List<Grade> getComparedList(Account account) throws IOException, VulcanException,
+    private List<Grade> getComparedList(Semester semester) throws IOException, VulcanException, ParseException {
-            ParseException {
+        List<Grade> gradesFromNet = DataObjectConverter.gradesToGradeEntities(
-        List<Grade> gradesFromNet = DataObjectConverter
+                vulcan.getGradesList().getAll(semester.getValue()), semesterId);
-                .gradesToGradeEntities(vulcan.getGradesList().getAll());
 
-        List<Grade> gradesFromDb = account.getGradeList();
+        List<Grade> gradesFromDb = semester.getGradeList();
 
         return EntitiesCompare.compareGradeList(gradesFromNet, gradesFromDb);
     }
 
     private Long getSubjectId(String subjectName) {
-        return daoSession.getSubjectDao().queryBuilder()
+        return daoSession.getSubjectDao().queryBuilder().where(
-                .where(SubjectDao.Properties.Name.eq(subjectName),
+                SubjectDao.Properties.Name.eq(subjectName),
-                        SubjectDao.Properties.UserId.eq(userId))
+                SubjectDao.Properties.SemesterId.eq(semesterId)
-                .build()
+        ).build().uniqueOrThrow().getId();
-                .uniqueOrThrow()
-                .getId();
     }
 }

app/src/main/java/io/github/wulkanowy/data/sync/subjects/SubjectSync.java

@@ -1,7 +1,6 @@
 package io.github.wulkanowy.data.sync.subjects;
 
 import java.io.IOException;
-import java.text.ParseException;
 import java.util.ArrayList;
 import java.util.List;
 
@@ -10,10 +9,9 @@ import javax.inject.Singleton;
 
 import io.github.wulkanowy.api.Vulcan;
 import io.github.wulkanowy.api.VulcanException;
-import io.github.wulkanowy.data.db.dao.entities.Account;
 import io.github.wulkanowy.data.db.dao.entities.DaoSession;
+import io.github.wulkanowy.data.db.dao.entities.Semester;
 import io.github.wulkanowy.data.db.dao.entities.Subject;
-import io.github.wulkanowy.data.db.shared.SharedPrefContract;
 import io.github.wulkanowy.data.sync.SyncContract;
 import io.github.wulkanowy.utils.DataObjectConverter;
 import io.github.wulkanowy.utils.LogUtils;
@@ -25,21 +23,17 @@ public class SubjectSync implements SyncContract {
 
     private final Vulcan vulcan;
 
-    private final SharedPrefContract sharedPref;
+    private long semesterId;
-
-    private Long userId;
 
     @Inject
-    SubjectSync(DaoSession daoSession, SharedPrefContract sharedPref, Vulcan vulcan) {
+    SubjectSync(DaoSession daoSession, Vulcan vulcan) {
         this.daoSession = daoSession;
-        this.sharedPref = sharedPref;
         this.vulcan = vulcan;
     }
 
     @Override
-    public void sync() throws VulcanException, IOException, ParseException {
+    public void sync(long semesterId) throws VulcanException, IOException {
-
+        this.semesterId = semesterId;
-        userId = sharedPref.getCurrentUserId();
 
         List<Subject> lastList = getUpdatedList(getSubjectsFromNet());
 
@@ -50,20 +44,21 @@ public class SubjectSync implements SyncContract {
     }
 
     private List<Subject> getSubjectsFromNet() throws VulcanException, IOException {
-        return DataObjectConverter.subjectsToSubjectEntities(vulcan.getSubjectsList().getAll());
+        return DataObjectConverter.subjectsToSubjectEntities(
+                vulcan.getSubjectsList().getAll(String.valueOf(semesterId)), semesterId);
     }
 
     private List<Subject> getSubjectsFromDb() {
-        Account account = daoSession.getAccountDao().load(userId);
+        Semester semester = daoSession.getSemesterDao().load(semesterId);
-        account.resetSubjectList();
+        semester.resetSubjectList();
-        return account.getSubjectList();
+        return semester.getSubjectList();
     }
 
     private List<Subject> getUpdatedList(List<Subject> subjectsFromNet) {
         List<Subject> updatedList = new ArrayList<>();
 
         for (Subject subject : subjectsFromNet) {
-            subject.setUserId(userId);
+            subject.setSemesterId(semesterId);
             updatedList.add(subject);
         }
         return updatedList;

app/src/main/java/io/github/wulkanowy/data/sync/timetable/TimetableSync.java

@@ -18,7 +18,6 @@ import io.github.wulkanowy.data.db.dao.entities.TimetableLesson;
 import io.github.wulkanowy.data.db.dao.entities.TimetableLessonDao;
 import io.github.wulkanowy.data.db.dao.entities.Week;
 import io.github.wulkanowy.data.db.dao.entities.WeekDao;
-import io.github.wulkanowy.data.db.shared.SharedPrefContract;
 import io.github.wulkanowy.utils.DataObjectConverter;
 import io.github.wulkanowy.utils.LogUtils;
 import io.github.wulkanowy.utils.TimeUtils;
@@ -28,27 +27,24 @@ public class TimetableSync implements TimetableSyncContract {
 
     private final DaoSession daoSession;
 
-    private final SharedPrefContract sharedPref;
-
     private final Vulcan vulcan;
 
-    private long userId;
+    private long diaryId;
 
     @Inject
-    TimetableSync(DaoSession daoSession, SharedPrefContract sharedPref, Vulcan vulcan) {
+    TimetableSync(DaoSession daoSession, Vulcan vulcan) {
         this.daoSession = daoSession;
-        this.sharedPref = sharedPref;
         this.vulcan = vulcan;
     }
 
     @Override
-    public void syncTimetable() throws IOException, ParseException, VulcanException {
+    public void syncTimetable(long diaryId) throws IOException, ParseException, VulcanException {
-        syncTimetable(null);
+        syncTimetable(diaryId, null);
     }
 
     @Override
-    public void syncTimetable(String date) throws IOException, ParseException, VulcanException {
+    public void syncTimetable(long diaryId, String date) throws IOException, ParseException, VulcanException {
-        this.userId = sharedPref.getCurrentUserId();
+        this.diaryId = diaryId;
 
         io.github.wulkanowy.api.generic.Week<io.github.wulkanowy.api.generic.Day> weekApi = getWeekFromApi(getNormalizedDate(date));
         Week weekDb = getWeekFromDb(weekApi.getStartDayDate());
@@ -67,27 +63,27 @@ public class TimetableSync implements TimetableSyncContract {
     }
 
     private io.github.wulkanowy.api.generic.Week<io.github.wulkanowy.api.generic.Day> getWeekFromApi(String date)
-            throws IOException, VulcanException, ParseException {
+            throws IOException, ParseException, VulcanException {
         return vulcan.getTimetable().getWeekTable(date);
     }
 
     private Week getWeekFromDb(String date) {
-        return daoSession.getWeekDao()
+        return daoSession.getWeekDao().queryBuilder().where(
-                .queryBuilder()
+                WeekDao.Properties.DiaryId.eq(diaryId),
-                .where(WeekDao.Properties.UserId.eq(userId), WeekDao.Properties.StartDayDate.eq(date))
+                WeekDao.Properties.StartDayDate.eq(date)
-                .unique();
+        ).unique();
     }
 
     private Long updateWeekInDb(Week dbEntity, io.github.wulkanowy.api.generic.Week fromApi) {
         if (dbEntity != null) {
-            dbEntity.setIsTimetableSynced(true);
+            dbEntity.setTimetableSynced(true);
             dbEntity.update();
 
             return dbEntity.getId();
         }
 
-        Week apiEntity = DataObjectConverter.weekToWeekEntity(fromApi).setUserId(userId);
+        Week apiEntity = DataObjectConverter.weekToWeekEntity(fromApi).setDiaryId(diaryId);
-        apiEntity.setIsTimetableSynced(true);
+        apiEntity.setTimetableSynced(true);
 
         return daoSession.getWeekDao().insert(apiEntity);
     }
@@ -97,7 +93,7 @@ public class TimetableSync implements TimetableSyncContract {
 
         for (io.github.wulkanowy.api.generic.Day dayFromApi : dayListFromApi) {
 
-            Day dbDayEntity = getDayFromDb(dayFromApi.getDate());
+            Day dbDayEntity = getDayFromDb(dayFromApi.getDate(), weekId);
 
             Day apiDayEntity = DataObjectConverter.dayToDayEntity(dayFromApi);
 
@@ -109,15 +105,14 @@ public class TimetableSync implements TimetableSyncContract {
         return updatedLessonList;
     }
 
-    private Day getDayFromDb(String date) {
+    private Day getDayFromDb(String date, long weekId) {
-        return daoSession.getDayDao()
+        return daoSession.getDayDao().queryBuilder().where(
-                .queryBuilder()
+                DayDao.Properties.WeekId.eq(weekId),
-                .where(DayDao.Properties.UserId.eq(userId), DayDao.Properties.Date.eq(date))
+                DayDao.Properties.Date.eq(date)
-                .unique();
+        ).unique();
     }
 
     private long updateDay(Day dayFromDb, Day apiDayEntity, long weekId) {
-        apiDayEntity.setUserId(userId);
         apiDayEntity.setWeekId(weekId);
 
         if (null != dayFromDb) {

app/src/main/java/io/github/wulkanowy/data/sync/timetable/TimetableSyncContract.java

@@ -7,7 +7,7 @@ import io.github.wulkanowy.api.VulcanException;
 
 public interface TimetableSyncContract {
 
-    void syncTimetable(String date) throws VulcanException, IOException, ParseException;
+    void syncTimetable(long diaryId, String date) throws VulcanException, IOException, ParseException;
 
-    void syncTimetable() throws VulcanException, IOException, ParseException;
+    void syncTimetable(long diaryId) throws VulcanException, IOException, ParseException;
 }

app/src/main/java/io/github/wulkanowy/ui/main/attendance/AttendanceDialogFragment.java

@@ -77,7 +77,7 @@ public class AttendanceDialogFragment extends DialogFragment {
 
         description.setText(lesson.getDescription());
 
-        if (lesson.getIsAbsenceUnexcused()) {
+        if (lesson.getAbsenceUnexcused()) {
             description.setTextColor(getResources().getColor(R.color.colorPrimaryDark));
         }
 

app/src/main/java/io/github/wulkanowy/ui/main/attendance/AttendanceHeaderItem.java

@@ -141,7 +141,7 @@ public class AttendanceHeaderItem
         private int countNotPresentHours(List<AttendanceSubItem> subItems) {
             int i = 0;
             for (AttendanceSubItem subItem : subItems) {
-                if (subItem.getLesson().getIsAbsenceUnexcused()) {
+                if (subItem.getLesson().getAbsenceUnexcused()) {
                     i++;
                 }
             }
@@ -150,8 +150,8 @@ public class AttendanceHeaderItem
 
         private boolean isSubItemsHasChanges(List<AttendanceSubItem> subItems) {
             for (AttendanceSubItem subItem : subItems) {
-                if (subItem.getLesson().getIsAbsenceUnexcused() || subItem.getLesson()
+                if (subItem.getLesson().getAbsenceUnexcused() || subItem.getLesson()
-                        .getIsUnexcusedLateness()) {
+                        .getUnexcusedLateness()) {
                     return true;
                 }
             }

app/src/main/java/io/github/wulkanowy/ui/main/attendance/AttendanceSubItem.java

@@ -102,7 +102,7 @@ class AttendanceSubItem
             lessonName.setText(lesson.getSubject());
             lessonNumber.setText((String.valueOf(lesson.getNumber())));
             lessonDescription.setText(lesson.getDescription());
-            alert.setVisibility(lesson.getIsAbsenceUnexcused() || lesson.getIsUnexcusedLateness()
+            alert.setVisibility(lesson.getAbsenceUnexcused() || lesson.getUnexcusedLateness()
                     ? View.VISIBLE : View.INVISIBLE);
         }
 

app/src/main/java/io/github/wulkanowy/ui/main/attendance/AttendanceTabPresenter.java

@@ -94,7 +94,7 @@ public class AttendanceTabPresenter extends BasePresenter<AttendanceTabContract.
     public void onDoInBackgroundLoading() throws Exception {
         Week week = getRepository().getWeek(date);
 
-        if (week == null || !week.getIsAttendanceSynced()) {
+        if (week == null || !week.getAttendanceSynced()) {
             syncData();
             week = getRepository().getWeek(date);
         }

app/src/main/java/io/github/wulkanowy/ui/main/grades/GradesPresenter.java

@@ -103,8 +103,8 @@ public class GradesPresenter extends BasePresenter<GradesContract.View>
     }
 
     @Override
-    public void onDoInBackgroundLoading() throws Exception {
+    public void onDoInBackgroundLoading() {
-        List<Subject> subjectList = getRepository().getCurrentUser().getSubjectList();
+        List<Subject> subjectList = getRepository().getSubjectList();
 
         headerItems = new ArrayList<>();
 

app/src/main/java/io/github/wulkanowy/ui/main/timetable/TimetableDialogFragment.java

@@ -91,8 +91,8 @@ public class TimetableDialogFragment extends DialogFragment {
             teacherLabel.setVisibility(View.GONE);
         }
 
-        if (!lesson.getGroupName().isEmpty()) {
+        if (!lesson.getGroup().isEmpty()) {
-            group.setText(lesson.getGroupName());
+            group.setText(lesson.getGroup());
         } else {
             group.setVisibility(View.GONE);
             groupLabel.setVisibility(View.GONE);

app/src/main/java/io/github/wulkanowy/ui/main/timetable/TimetableHeaderItem.java

@@ -105,9 +105,9 @@ public class TimetableHeaderItem
             dayName.setText(StringUtils.capitalize(item.getDayName()));
             date.setText(item.getDate());
             alert.setVisibility(isSubItemNewMovedInOrChanged(subItems) ? View.VISIBLE : View.INVISIBLE);
-            freeName.setVisibility(item.getIsFreeDay() ? View.VISIBLE : View.INVISIBLE);
+            freeName.setVisibility(item.getFreeDay() ? View.VISIBLE : View.INVISIBLE);
             freeName.setText(item.getFreeDayName());
-            setInactiveHeader(item.getIsFreeDay());
+            setInactiveHeader(item.getFreeDay());
         }
 
         private void setInactiveHeader(boolean inactive) {
@@ -134,8 +134,8 @@ public class TimetableHeaderItem
             boolean isAlertActive = false;
 
             for (TimetableSubItem subItem : subItems) {
-                if (subItem.getLesson().getIsMovedOrCanceled() ||
+                if (subItem.getLesson().getMovedOrCanceled() ||
-                        subItem.getLesson().getIsNewMovedInOrChanged()) {
+                        subItem.getLesson().getNewMovedInOrChanged()) {
                     isAlertActive = true;
                 }
             }

app/src/main/java/io/github/wulkanowy/ui/main/timetable/TimetableSubItem.java

@@ -108,9 +108,9 @@ public class TimetableSubItem
             lessonTime.setText(getLessonTimeString());
             numberOfLesson.setText(lesson.getNumber());
             room.setText(getRoomString());
-            alert.setVisibility(lesson.getIsMovedOrCanceled() || lesson.getIsNewMovedInOrChanged()
+            alert.setVisibility(lesson.getMovedOrCanceled() || lesson.getNewMovedInOrChanged()
                     ? View.VISIBLE : View.INVISIBLE);
-            lessonName.setPaintFlags(lesson.getIsMovedOrCanceled() ? lessonName.getPaintFlags()
+            lessonName.setPaintFlags(lesson.getMovedOrCanceled() ? lessonName.getPaintFlags()
                     | Paint.STRIKE_THRU_TEXT_FLAG :
                     lessonName.getPaintFlags() & (~Paint.STRIKE_THRU_TEXT_FLAG));
             room.setText(getRoomString());

app/src/main/java/io/github/wulkanowy/ui/main/timetable/TimetableTabPresenter.java

@@ -97,7 +97,7 @@ public class TimetableTabPresenter extends BasePresenter<TimetableTabContract.Vi
     public void onDoInBackgroundLoading() throws Exception {
         Week week = getRepository().getWeek(date);
 
-        if (week == null || !week.getIsTimetableSynced()) {
+        if (week == null || !week.getTimetableSynced()) {
             syncData();
             week = getRepository().getWeek(date);
         }
@@ -113,7 +113,7 @@ public class TimetableTabPresenter extends BasePresenter<TimetableTabContract.Vi
             TimetableHeaderItem headerItem = new TimetableHeaderItem(day);
 
             if (isFreeWeek) {
-                isFreeWeek = day.getIsFreeDay();
+                isFreeWeek = day.getFreeDay();
             }
 
             List<TimetableLesson> lessonList = day.getTimetableLessons();

app/src/main/java/io/github/wulkanowy/utils/DataObjectConverter.java

@@ -8,6 +8,8 @@ import io.github.wulkanowy.data.db.dao.entities.AttendanceLesson;
 import io.github.wulkanowy.data.db.dao.entities.Day;
 import io.github.wulkanowy.data.db.dao.entities.Diary;
 import io.github.wulkanowy.data.db.dao.entities.Grade;
+import io.github.wulkanowy.data.db.dao.entities.Semester;
+import io.github.wulkanowy.data.db.dao.entities.Student;
 import io.github.wulkanowy.data.db.dao.entities.Subject;
 import io.github.wulkanowy.data.db.dao.entities.TimetableLesson;
 import io.github.wulkanowy.data.db.dao.entities.Week;
@@ -18,26 +20,56 @@ public final class DataObjectConverter {
         throw new IllegalStateException("Utility class");
     }
 
-    public static List<Diary> diariesToDiaryEntities(List<io.github.wulkanowy.api.Diary> diaryList) {
+    public static List<Student> studentsToStudentEntities(List<io.github.wulkanowy.api.Student> students, Long symbolId) {
+        List<Student> studentList = new ArrayList<>();
+
+        for (io.github.wulkanowy.api.Student student : students) {
+            studentList.add(new Student()
+                    .setName(student.getName())
+                    .setCurrent(student.isCurrent())
+                    .setRealId(student.getId())
+                    .setSymbolId(symbolId)
+            );
+        }
+
+        return studentList;
+    }
+
+    public static List<Diary> diariesToDiaryEntities(List<io.github.wulkanowy.api.Diary> diaryList, Long studentId) {
         List<Diary> diaryEntityList = new ArrayList<>();
 
         for (io.github.wulkanowy.api.Diary diary : diaryList) {
-            Diary diaryEntity = new Diary()
+            diaryEntityList.add(new Diary()
+                    .setStudentId(studentId)
                     .setValue(diary.getId())
                     .setName(diary.getName())
-                    .setStudentId(diary.getStudentId())
+                    .setCurrent(diary.isCurrent()));
-                    .setIsCurrent(diary.isCurrent());
-            diaryEntityList.add(diaryEntity);
         }
 
         return diaryEntityList;
     }
 
-    public static List<Subject> subjectsToSubjectEntities(List<io.github.wulkanowy.api.grades.Subject> subjectList) {
+    public static List<Semester> semestersToSemesterEntities(List<io.github.wulkanowy.api.Semester> semesters, long diaryId) {
+        List<Semester> semesterList = new ArrayList<>();
+
+        for (io.github.wulkanowy.api.Semester semester : semesters) {
+            semesterList.add(new Semester()
+                    .setDiaryId(diaryId)
+                    .setName(semester.getName())
+                    .setCurrent(semester.isCurrent())
+                    .setValue(semester.getId())
+            );
+        }
+
+        return semesterList;
+    }
+
+    public static List<Subject> subjectsToSubjectEntities(List<io.github.wulkanowy.api.grades.Subject> subjectList, long semesterId) {
         List<Subject> subjectEntityList = new ArrayList<>();
 
         for (io.github.wulkanowy.api.grades.Subject subject : subjectList) {
             Subject subjectEntity = new Subject()
+                    .setSemesterId(semesterId)
                     .setName(subject.getName())
                     .setPredictedRating(subject.getPredictedRating())
                     .setFinalRating(subject.getFinalRating());
@@ -47,11 +79,11 @@ public final class DataObjectConverter {
         return subjectEntityList;
     }
 
-    public static List<Grade> gradesToGradeEntities(List<io.github.wulkanowy.api.grades.Grade> gradeList) {
+    public static List<Grade> gradesToGradeEntities(List<io.github.wulkanowy.api.grades.Grade> gradeList, long semesterId) {
         List<Grade> gradeEntityList = new ArrayList<>();
 
         for (io.github.wulkanowy.api.grades.Grade grade : gradeList) {
-            Grade gradeEntity = new Grade()
+            gradeEntityList.add(new Grade()
                     .setSubject(grade.getSubject())
                     .setValue(grade.getValue())
                     .setColor(grade.getColor())
@@ -60,10 +92,9 @@ public final class DataObjectConverter {
                     .setWeight(grade.getWeight())
                     .setDate(grade.getDate())
                     .setTeacher(grade.getTeacher())
-                    .setSemester(grade.getSemester());
+                    .setSemesterId(semesterId));
-
-            gradeEntityList.add(gradeEntity);
         }
+
         return gradeEntityList;
     }
 
@@ -75,11 +106,10 @@ public final class DataObjectConverter {
         return new Day()
                 .setDate(day.getDate())
                 .setDayName(day.getDayName())
-                .setIsFreeDay(day.isFreeDay())
+                .setFreeDay(day.isFreeDay())
                 .setFreeDayName(day.getFreeDayName());
     }
 
-
     public static List<Day> daysToDaysEntities(List<io.github.wulkanowy.api.generic.Day> dayList) {
         List<Day> dayEntityList = new ArrayList<>();
 
@@ -89,14 +119,24 @@ public final class DataObjectConverter {
         return dayEntityList;
     }
 
-    public static TimetableLesson lessonToTimetableLessonEntity(io.github.wulkanowy.api.generic.Lesson lesson) {
+    public static List<TimetableLesson> lessonsToTimetableLessonsEntities(List<io.github.wulkanowy.api.generic.Lesson> lessonList) {
+        List<TimetableLesson> lessonEntityList = new ArrayList<>();
+
+        for (io.github.wulkanowy.api.generic.Lesson lesson : lessonList) {
+            lessonEntityList.add(lessonToTimetableLessonEntity(lesson));
+        }
+
+        return lessonEntityList;
+    }
+
+    private static TimetableLesson lessonToTimetableLessonEntity(io.github.wulkanowy.api.generic.Lesson lesson) {
         return new TimetableLesson()
                 .setNumber(lesson.getNumber())
                 .setSubject(lesson.getSubject())
                 .setTeacher(lesson.getTeacher())
                 .setRoom(lesson.getRoom())
                 .setDescription(lesson.getDescription())
-                .setGroupName(lesson.getGroupName())
+                .setGroup(lesson.getGroupName())
                 .setStartTime(lesson.getStartTime())
                 .setEndTime(lesson.getEndTime())
                 .setDate(lesson.getDate())
@@ -108,35 +148,27 @@ public final class DataObjectConverter {
                 .setNewMovedInOrChanged(lesson.isNewMovedInOrChanged());
     }
 
-    public static AttendanceLesson lessonToAttendanceLessonEntity(io.github.wulkanowy.api.generic.Lesson lesson) {
-        return new AttendanceLesson()
-                .setNumber(Integer.valueOf(lesson.getNumber()))
-                .setSubject(lesson.getSubject())
-                .setDate(lesson.getDate())
-                .setIsPresence(lesson.isPresence())
-                .setIsAbsenceUnexcused(lesson.isAbsenceUnexcused())
-                .setIsAbsenceExcused(lesson.isAbsenceExcused())
-                .setIsUnexcusedLateness(lesson.isUnexcusedLateness())
-                .setIsAbsenceForSchoolReasons(lesson.isAbsenceForSchoolReasons())
-                .setIsExcusedLateness(lesson.isExcusedLateness())
-                .setIsExemption(lesson.isExemption());
-    }
-
-    public static List<TimetableLesson> lessonsToTimetableLessonsEntities(List<io.github.wulkanowy.api.generic.Lesson> lessonList) {
-        List<TimetableLesson> lessonEntityList = new ArrayList<>();
-
-        for (io.github.wulkanowy.api.generic.Lesson lesson : lessonList) {
-            lessonEntityList.add(lessonToTimetableLessonEntity(lesson));
-        }
-        return lessonEntityList;
-    }
-
     public static List<AttendanceLesson> lessonsToAttendanceLessonsEntities(List<io.github.wulkanowy.api.generic.Lesson> lessonList) {
         List<AttendanceLesson> lessonEntityList = new ArrayList<>();
 
         for (io.github.wulkanowy.api.generic.Lesson lesson : lessonList) {
             lessonEntityList.add(lessonToAttendanceLessonEntity(lesson));
         }
+
         return lessonEntityList;
     }
+
+    private static AttendanceLesson lessonToAttendanceLessonEntity(io.github.wulkanowy.api.generic.Lesson lesson) {
+        return new AttendanceLesson()
+                .setNumber(Integer.valueOf(lesson.getNumber()))
+                .setSubject(lesson.getSubject())
+                .setDate(lesson.getDate())
+                .setPresence(lesson.isPresence())
+                .setAbsenceUnexcused(lesson.isAbsenceUnexcused())
+                .setAbsenceExcused(lesson.isAbsenceExcused())
+                .setUnexcusedLateness(lesson.isUnexcusedLateness())
+                .setAbsenceForSchoolReasons(lesson.isAbsenceForSchoolReasons())
+                .setExcusedLateness(lesson.isExcusedLateness())
+                .setExemption(lesson.isExemption());
+    }
 }

app/src/test/java/io/github/wulkanowy/utils/DataObjectConverterTest.java

@@ -19,7 +19,7 @@ public class DataObjectConverterTest {
         List<Subject> subjectList = new ArrayList<>();
         subjectList.add(new Subject().setName("Matematyka"));
         List<io.github.wulkanowy.data.db.dao.entities.Subject> subjectEntitiesList =
-                DataObjectConverter.subjectsToSubjectEntities(subjectList);
+                DataObjectConverter.subjectsToSubjectEntities(subjectList, 1L);
 
         Assert.assertEquals("Matematyka", subjectEntitiesList.get(0).getName());
     }
@@ -27,7 +27,7 @@ public class DataObjectConverterTest {
     @Test
     public void subjectConversionEmptyTest() {
         Assert.assertEquals(new ArrayList<>(),
-                DataObjectConverter.subjectsToSubjectEntities(new ArrayList<Subject>()));
+                DataObjectConverter.subjectsToSubjectEntities(new ArrayList<Subject>(), 1L));
     }
 
     @Test
@@ -35,7 +35,7 @@ public class DataObjectConverterTest {
         List<Grade> gradeList = new ArrayList<>();
         gradeList.add(new Grade().setDescription("Lorem ipsum"));
         List<io.github.wulkanowy.data.db.dao.entities.Grade> gradeEntitiesList =
-                DataObjectConverter.gradesToGradeEntities(gradeList);
+                DataObjectConverter.gradesToGradeEntities(gradeList, 1L);
 
         Assert.assertEquals("Lorem ipsum", gradeEntitiesList.get(0).getDescription());
     }
@@ -43,7 +43,7 @@ public class DataObjectConverterTest {
     @Test
     public void gradeConversionEmptyTest() {
         Assert.assertEquals(new ArrayList<>(),
-                DataObjectConverter.gradesToGradeEntities(new ArrayList<Grade>()));
+                DataObjectConverter.gradesToGradeEntities(new ArrayList<Grade>(), 1L));
     }
 
     @Test

app/src/test/java/io/github/wulkanowy/utils/EntitiesCompareTest.java

@@ -30,8 +30,7 @@ public class EntitiesCompareTest {
                 .setDescription("Lorem ipsum")
                 .setWeight("10")
                 .setDate("01.01.2017")
-                .setTeacher("Andrzej")
+                .setTeacher("Andrzej");
-                .setSemester("777");
 
         grade2 = new Grade()
                 .setSubject("Religia")
@@ -41,8 +40,7 @@ public class EntitiesCompareTest {
                 .setDescription("Wolna wola")
                 .setWeight("10")
                 .setDate("01.01.2017")
-                .setTeacher("Andrzej")
+                .setTeacher("Andrzej");
-                .setSemester("777");
     }
 
     @Test