Summary: Ctors | Protected Ctors | Methods | Inherited Methods

InvalidationTracker.Observer

Kotlin |Java

public static abstract class InvalidationTracker.Observer
extends Object

java.lang.Object
↳	androidx.room.InvalidationTracker.Observer

An observer that can listen for changes in the database.

Summary

Public constructors
`InvalidationTracker.Observer(String[] tables)` Observes the given list of tables and views.

Protected constructors
`InvalidationTracker.Observer(String firstTable, String... rest)` Observes the given list of tables and views.

Public methods
`abstract void`	`onInvalidated(Set<String> tables)` Called when one of the observed tables is invalidated in the database.

From class


        
          java.lang.Object

public InvalidationTracker.Observer (String[] tables)

Observes the given list of tables and views.

Parameters
`tables`	`String`: The list of tables or views to observe for changes.

protected InvalidationTracker.Observer (String firstTable, 
                String... rest)

Observes the given list of tables and views.

Parameters
`firstTable`	`String`: The name of the table or view.
`rest`	`String`: More names of tables or views.

public abstract 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 you want to know which table is invalidated. This will be names of underlying tables when you are observing views.