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added in
version 1.1.0
belongs to Maven artifact android.arch.persistence.room:runtime:1.1.0-beta2
InvalidationTracker.Observer
public
static
abstract
class
InvalidationTracker.Observer
extends Object
| java.lang.Object
|
| ↳ |
android.arch.persistence.room.InvalidationTracker.Observer
|
An observer that can listen for changes in the database.
Summary
Public methods |
|---|
abstract
void
|
onInvalidated(Set<String> tables)
Called when one of the observed tables is invalidated in the database.
|
Inherited methods |
|---|
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()
|
|
Public constructors
InvalidationTracker.Observer
InvalidationTracker.Observer (String[] tables)
Observes the given list of tables.
| Parameters |
|---|
tables |
String: The list of tables to observe for changes.
|
Protected constructors
InvalidationTracker.Observer
InvalidationTracker.Observer (String firstTable,
String... rest)
Observes the given list of tables.
| Parameters |
|---|
firstTable |
String: The table name |
rest |
String: More table names
|
Public methods
onInvalidated
void onInvalidated (Set<String> tables)
Called when one of the observed tables is invalidated in the database.
| Parameters |
|---|
tables |
Set: A set of invalidated tables. This is useful when the observer targets
multiple tables and want to know which table is invalidated.
|
Annotations
Classes
Enums
Exceptions
Content and code samples on this page are subject to the licenses described in the Content License. Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
Last updated 2025-02-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-02-10 UTC."],[],[],null,["# InvalidationTracker.Observer\n\nadded in [version 1.1.0](/topic/libraries/support-library/revisions) \nbelongs to Maven artifact android.arch.persistence.room:runtime:1.1.0-beta2 \nSummary: [Ctors](#pubctors) \\| [Protected Ctors](#proctors) \\| [Methods](#pubmethods) \\| [Inherited Methods](#inhmethods) \n\nInvalidationTracker.Observer\n============================\n\n| The `android.arch` Architecture Components packages are no longer maintained. They have been superseded by the corresponding [androidx.\\*](/jetpack/androidx/migrate) packages. See [androidx.room.InvalidationTracker.Observer](/reference/androidx/room/InvalidationTracker.Observer) instead.\n\n\n`\npublic\nstatic\n\nabstract\nclass\nInvalidationTracker.Observer\n`\n\n\n`\n\nextends Object\n\n\n`\n\n`\n\n\n`\n\n|---|------------------------------------------------------------|\n| java.lang.Object ||\n| ↳ | android.arch.persistence.room.InvalidationTracker.Observer |\n\n\u003cbr /\u003e\n\n*** ** * ** ***\n\nAn observer that can listen for changes in the database.\n\nSummary\n-------\n\n| ### Public constructors ||\n|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| ` `[InvalidationTracker.Observer](/reference/android/arch/persistence/room/InvalidationTracker.Observer#InvalidationTracker.Observer(java.lang.String[]))`(String[] tables) ` Observes the given list of tables. |\n\n| ### Protected constructors ||\n|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---|\n| ` `[InvalidationTracker.Observer](/reference/android/arch/persistence/room/InvalidationTracker.Observer#InvalidationTracker.Observer(java.lang.String, java.lang.String...))`(String firstTable, String... rest) ` Observes the given list of tables. |\n\n| ### Public methods ||\n|------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| ` abstract void` | ` `[onInvalidated](/reference/android/arch/persistence/room/InvalidationTracker.Observer#onInvalidated(java.util.Set\u003cjava.lang.String\u003e))`(Set\u003cString\u003e tables) ` Called when one of the observed tables is invalidated in the database. |\n\n| ### Inherited methods |\n|-----------------------|---|\n| From class ` java.lang.Object ` |-------------------|-------------------------------| | ` Object` | ` clone() ` | | ` boolean` | ` equals(Object arg0) ` | | ` void` | ` finalize() ` | | ` final Class\u003c?\u003e` | ` 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() ` | ||\n\nPublic constructors\n-------------------\n\n### InvalidationTracker.Observer\n\nadded in [version 1.1.0](/topic/libraries/support-library/revisions) \n\n```\nInvalidationTracker.Observer (String[] tables)\n```\n\nObserves the given list of tables.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|----------|-------------------------------------------------------------|\n| `tables` | `String`: The list of tables to observe for changes. \u003cbr /\u003e |\n\nProtected constructors\n----------------------\n\n### InvalidationTracker.Observer\n\nadded in [version 1.1.0](/topic/libraries/support-library/revisions) \n\n```\nInvalidationTracker.Observer (String firstTable, \n String... rest)\n```\n\nObserves the given list of tables.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|--------------|-----------------------------------|\n| `firstTable` | `String`: The table name \u003cbr /\u003e |\n| `rest` | `String`: More table names \u003cbr /\u003e |\n\nPublic methods\n--------------\n\n### onInvalidated\n\nadded in [version 1.1.0](/topic/libraries/support-library/revisions) \n\n```\nvoid onInvalidated (Set\u003cString\u003e tables)\n```\n\nCalled when one of the observed tables is invalidated in the database.\n\n\u003cbr /\u003e\n\n| Parameters ||\n|----------|--------------------------------------------------------------------------------------------------------------------------------------------------|\n| `tables` | `Set`: A set of invalidated tables. This is useful when the observer targets multiple tables and want to know which table is invalidated. \u003cbr /\u003e |\n\n-\n\n Annotations\n -----------\n\n - [ColumnInfo](/reference/android/arch/persistence/room/ColumnInfo)\n - [ColumnInfo.Collate](/reference/android/arch/persistence/room/ColumnInfo.Collate)\n - [ColumnInfo.SQLiteTypeAffinity](/reference/android/arch/persistence/room/ColumnInfo.SQLiteTypeAffinity)\n - [Dao](/reference/android/arch/persistence/room/Dao)\n - [Database](/reference/android/arch/persistence/room/Database)\n - [Delete](/reference/android/arch/persistence/room/Delete)\n - [Embedded](/reference/android/arch/persistence/room/Embedded)\n - [Entity](/reference/android/arch/persistence/room/Entity)\n - [ForeignKey](/reference/android/arch/persistence/room/ForeignKey)\n - [ForeignKey.Action](/reference/android/arch/persistence/room/ForeignKey.Action)\n - [Ignore](/reference/android/arch/persistence/room/Ignore)\n - [Index](/reference/android/arch/persistence/room)\n - [Insert](/reference/android/arch/persistence/room/Insert)\n - [OnConflictStrategy](/reference/android/arch/persistence/room/OnConflictStrategy)\n - [PrimaryKey](/reference/android/arch/persistence/room/PrimaryKey)\n - [Query](/reference/android/arch/persistence/room/Query)\n - [RawQuery](/reference/android/arch/persistence/room/RawQuery)\n - [Relation](/reference/android/arch/persistence/room/Relation)\n - [SkipQueryVerification](/reference/android/arch/persistence/room/SkipQueryVerification)\n - [Transaction](/reference/android/arch/persistence/room/Transaction)\n - [TypeConverter](/reference/android/arch/persistence/room/TypeConverter)\n - [TypeConverters](/reference/android/arch/persistence/room/TypeConverters)\n - [Update](/reference/android/arch/persistence/room/Update)\n-\n\n Classes\n -------\n\n - [DatabaseConfiguration](/reference/android/arch/persistence/room/DatabaseConfiguration)\n - [InvalidationTracker](/reference/android/arch/persistence/room/InvalidationTracker)\n - [InvalidationTracker.Observer](/reference/android/arch/persistence/room/InvalidationTracker.Observer)\n - [Room](/reference/android/arch/persistence/room/Room)\n - [RoomDatabase](/reference/android/arch/persistence/room/RoomDatabase)\n - [RoomDatabase.Builder](/reference/android/arch/persistence/room/RoomDatabase.Builder)\n - [RoomDatabase.Callback](/reference/android/arch/persistence/room/RoomDatabase.Callback)\n - [RoomDatabase.MigrationContainer](/reference/android/arch/persistence/room/RoomDatabase.MigrationContainer)\n - [RoomWarnings](/reference/android/arch/persistence/room/RoomWarnings)\n - [RxRoom](/reference/android/arch/persistence/room/RxRoom)\n-\n\n Enums\n -----\n\n - [RoomDatabase.JournalMode](/reference/android/arch/persistence/room/RoomDatabase.JournalMode)\n-\n\n Exceptions\n ----------\n\n - [EmptyResultSetException](/reference/android/arch/persistence/room/EmptyResultSetException)"]]
