JournalMode

Kotlin |Java

class JournalMode

kotlin.Any
↳	kotlin.Enum<androidx.room.RoomDatabase.JournalMode>
	↳	androidx.room.RoomDatabase.JournalMode

Known Direct Subclasses

RoomDatabase.JournalMode.AUTOMATIC, RoomDatabase.JournalMode.TRUNCATE, RoomDatabase.JournalMode.WRITE_AHEAD_LOGGING

RoomDatabase.JournalMode.AUTOMATIC	Let Room choose the journal mode.
RoomDatabase.JournalMode.TRUNCATE	Truncate journal mode.
RoomDatabase.JournalMode.WRITE_AHEAD_LOGGING	Write-Ahead Logging mode.

Journal modes for SQLite database.

Summary

Enum values
`AUTOMATIC` Let Room choose the journal mode.
`TRUNCATE` Truncate journal mode.
`WRITE_AHEAD_LOGGING` Write-Ahead Logging mode.

Enum values

AUTOMATIC

enum val AUTOMATIC : RoomDatabase.JournalMode

Let Room choose the journal mode. This is the default value when no explicit value is specified.

The actual value will be TRUNCATE when the device runs API Level lower than 16 or it is a low-RAM device. Otherwise, WRITE_AHEAD_LOGGING will be used.

TRUNCATE

enum val TRUNCATE : RoomDatabase.JournalMode

Truncate journal mode.

WRITE_AHEAD_LOGGING

@RequiresApi(16) enum val WRITE_AHEAD_LOGGING : RoomDatabase.JournalMode

Write-Ahead Logging mode.