github/wulkanowy-mirror
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Clear Semesters table (#535)

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This commit is contained in:
Mikołaj Pich
2019-10-03 14:00:07 +02:00
committed by Rafał Borcz
parent f9474af39e
commit 5b0901e311
5 changed files with 70 additions and 35 deletions
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41
app/src/main/java/io/github/wulkanowy/data/db/AppDatabase.kt
View File

@ -6,6 +6,7 @@ import androidx.room.Room
import androidx.room.RoomDatabase
import androidx.room.RoomDatabase.JournalMode.TRUNCATE
import androidx.room.TypeConverters
import androidx.room.migration.Migration
import io.github.wulkanowy.data.db.dao.AttendanceDao
import io.github.wulkanowy.data.db.dao.AttendanceSummaryDao
import io.github.wulkanowy.data.db.dao.CompletedLessonsDao
@ -97,29 +98,33 @@ abstract class AppDatabase : RoomDatabase() {
companion object {
const val VERSION_SCHEMA = 17
fun getMigrations(): Array<Migration> {
return arrayOf(
Migration2(),
Migration3(),
Migration4(),
Migration5(),
Migration6(),
Migration7(),
Migration8(),
Migration9(),
Migration10(),
Migration11(),
Migration12(),
Migration13(),
Migration14(),
Migration15(),
Migration16(),
Migration17()
)
}
fun newInstance(context: Context): AppDatabase {
return Room.databaseBuilder(context, AppDatabase::class.java, "wulkanowy_database")
.setJournalMode(TRUNCATE)
.fallbackToDestructiveMigrationFrom(VERSION_SCHEMA + 1)
.fallbackToDestructiveMigrationOnDowngrade()
.addMigrations(
Migration2(),
Migration3(),
Migration4(),
Migration5(),
Migration6(),
Migration7(),
Migration8(),
Migration9(),
Migration10(),
Migration11(),
Migration12(),
Migration13(),
Migration14(),
Migration15(),
Migration16(),
Migration17()
)
.addMigrations(*getMigrations())
.build()
}
}

9
app/src/main/java/io/github/wulkanowy/data/db/migrations/Migration17.kt
View File

@ -6,6 +6,11 @@ import androidx.sqlite.db.SupportSQLiteDatabase
class Migration17 : Migration(16, 17) {
override fun migrate(database: SupportSQLiteDatabase) {
createGradesPointsStatisticsTable(database)
truncateSemestersTable(database)
}
private fun createGradesPointsStatisticsTable(database: SupportSQLiteDatabase) {
database.execSQL("""
CREATE TABLE IF NOT EXISTS GradesPointsStatistics(
id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
@ -17,4 +22,8 @@ class Migration17 : Migration(16, 17) {
)
""")
}
private fun truncateSemestersTable(database: SupportSQLiteDatabase) {
database.execSQL("DELETE FROM Semesters")
}
}