RoomDatabase.JournalMode

Added in 2.0.0

Kotlin |Java

public enum RoomDatabase.JournalMode extends Enum

java.lang.Object
↳	kotlin.Enum
	↳	androidx.room.RoomDatabase.JournalMode

Journal modes for SQLite database.

See also
`RoomDatabase.Builder`	#setJournalMode

Summary

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

Public methods
`final @NonNull EnumEntries<@NonNull RoomDatabase.JournalMode>`	`getEntries()` Journal modes for SQLite database.
`final @NonNull EnumEntries<@NonNull RoomDatabase.JournalMode>`	`getEntries()` Journal modes for SQLite database.
`final @NonNull RoomDatabase.JournalMode`	`valueOf(@NonNull String value)` Returns the enum constant of this type with the specified name.
`final @NonNull RoomDatabase.JournalMode`	`valueOf(@NonNull String value)` Returns the enum constant of this type with the specified name.
`final @NonNull RoomDatabase.JournalMode[]`	`values()` Returns an array containing the constants of this enum type, in the order they're declared.
`final @NonNull RoomDatabase.JournalMode[]`	`values()` Returns an array containing the constants of this enum type, in the order they're declared.

Enum Values

AUTOMATIC

RoomDatabase.JournalMode RoomDatabase.JournalMode.AUTOMATIC

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

RoomDatabase.JournalMode RoomDatabase.JournalMode.TRUNCATE

Truncate journal mode.

WRITE_AHEAD_LOGGING

RoomDatabase.JournalMode RoomDatabase.JournalMode.WRITE_AHEAD_LOGGING

Write-Ahead Logging mode.

Public methods

getEntries

public final @NonNull EnumEntries<@NonNull RoomDatabase.JournalMode> getEntries()

Journal modes for SQLite database.

See also
`setJournalMode`

getEntries

public final @NonNull EnumEntries<@NonNull RoomDatabase.JournalMode> getEntries()

Journal modes for SQLite database.

See also
`RoomDatabase.Builder`	#setJournalMode

valueOf

Added in 2.0.0

public final @NonNull RoomDatabase.JournalMode valueOf(@NonNull String value)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Throws
`kotlin.IllegalArgumentException`	if this enum type has no constant with the specified name

valueOf

Added in 2.0.0

public final @NonNull RoomDatabase.JournalMode valueOf(@NonNull String value)

Throws
`kotlin.IllegalArgumentException`	if this enum type has no constant with the specified name

values

Added in 2.0.0

public final @NonNull RoomDatabase.JournalMode[] values()

Returns an array containing the constants of this enum type, in the order they're declared.

This method may be used to iterate over the constants.

values

Added in 2.0.0

public final @NonNull RoomDatabase.JournalMode[] values()

Returns an array containing the constants of this enum type, in the order they're declared.

This method may be used to iterate over the constants.