InvalidationTracker.Observer
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. |
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Protected constructors | |
|---|---|
InvalidationTracker.Observer(String firstTable, String... rest)
Observes the given list of tables and views. |
|
Public methods | |
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abstract
void
|
onInvalidated(Set<String> tables)
Called when one of the observed tables is invalidated in the database. |
Inherited methods | |
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Public constructors
InvalidationTracker.Observer
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 constructors
InvalidationTracker.Observer
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.
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Public methods
onInvalidated
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.
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