added in version 1.1.0
belongs to Maven artifact android.arch.persistence.room:runtime:1.1.0-beta2

Summary: Enums | Methods | Inherited Methods

RoomDatabase.JournalMode

The android.arch Architecture Components packages are no longer maintained. They have been superseded by the corresponding androidx.* packages. See androidx.room.RoomDatabase.JournalMode instead.

public static final enum RoomDatabase.JournalMode
extends Enum<RoomDatabase.JournalMode>

java.lang.Object
↳	java.lang.Enum<android.arch.persistence.room.RoomDatabase.JournalMode>
	↳	android.arch.persistence.room.RoomDatabase.JournalMode

---

Journal modes for SQLite database.

See also:

• setJournalMode(JournalMode)

Summary

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

Public methods
static RoomDatabase.JournalMode	valueOf(String name)
static final JournalMode[]	values()

Inherited methods
From class java.lang.Enum final Object clone() final int compareTo(E arg0) int compareTo(Object arg0) final boolean equals(Object arg0) final void finalize() final Class<E> getDeclaringClass() final int hashCode() final String name() final int ordinal() String toString() static <T extends Enum<T>> T valueOf(Class<T> arg0, String arg1)
From class java.lang.Object Object clone() boolean equals(Object arg0) void finalize() final Class<?> getClass() int hashCode() final void notify() final void notifyAll() String toString() final void wait(long arg0, int arg1) final void wait(long arg0) final void wait()
From interface java.lang.Comparable abstract int compareTo(E arg0)

Enum values

AUTOMATIC

added in version 1.1.0

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

added in version 1.1.0

RoomDatabase.JournalMode TRUNCATE

Truncate journal mode.

WRITE_AHEAD_LOGGING

added in version 1.1.0

RoomDatabase.JournalMode WRITE_AHEAD_LOGGING

Write-Ahead Logging mode.

Public methods

valueOf

added in version 1.1.0

RoomDatabase.JournalMode valueOf (String name)

Parameters
name	String

Returns
RoomDatabase.JournalMode

values

added in version 1.1.0

JournalMode[] values ()

Returns
JournalMode[]

• Annotations

  • ColumnInfo
  • ColumnInfo.Collate
  • ColumnInfo.SQLiteTypeAffinity
  • Dao
  • Database
  • Delete
  • Embedded
  • Entity
  • ForeignKey
  • ForeignKey.Action
  • Ignore
  • Index
  • Insert
  • OnConflictStrategy
  • PrimaryKey
  • Query
  • RawQuery
  • Relation
  • SkipQueryVerification
  • Transaction
  • TypeConverter
  • TypeConverters
  • Update

• Classes

  • DatabaseConfiguration
  • InvalidationTracker
  • InvalidationTracker.Observer
  • Room
  • RoomDatabase
  • RoomDatabase.Builder
  • RoomDatabase.Callback
  • RoomDatabase.MigrationContainer
  • RoomWarnings
  • RxRoom

• Enums

  • RoomDatabase.JournalMode

• Exceptions

  • EmptyResultSetException