Package com.streambase.liveview.client

Class AbstractQueryListener

java.lang.Object

com.streambase.liveview.client.AbstractQueryListener

All Implemented Interfaces:

QueryListener, EventListener

Direct Known Subclasses:

AbstractBatchedQueryListener

public abstract class AbstractQueryListener
extends Object
implements QueryListener

A convenience implementation of QueryListener that can be extended and the specified methods can be overridden. Unless you override the methods below the callback events associated with them are essentially dropped.

Constructor Summary

Constructors

Constructor	Description
AbstractQueryListener()

Method Summary

Modifier and Type	Method	Description
void	deleteBegin(BeginDeleteEvent event)	Event to indicate the start of delete query.
void	deleteEnd(EndDeleteEvent event)	Event to indicate the delete query is complete.
void	exceptionRaised(QueryExceptionEvent event)	Event when an exception occurs during the query.
void	queryClosed(QueryClosedEvent event)	Event when a query being listened to is closed.
void	snapshotBegin(BeginSnapshotEvent event)	Event to indicate the start of the result snapshot.
void	snapshotEnd(EndSnapshotEvent event)	Event to indicate the query snapshot is complete.
void	tupleAdded(TupleAddedEvent event)	Event when a new tuple is added to the result.
void	tupleRemoved(TupleRemovedEvent event)	Event when an existing tuple is removed from the result.
void	tupleUpdated(TupleUpdatedEvent event)	Event when an existing tuple in the result is updated.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.streambase.liveview.client.QueryListener

aggMarkBegin, aggMarkEnd

Constructor Details

AbstractQueryListener

public AbstractQueryListener()

Method Details

tupleRemoved

public void tupleRemoved(TupleRemovedEvent event)

Event when an existing tuple is removed from the result.

Specified by:

tupleRemoved in interface QueryListener

Parameters:

event - remove event

tupleAdded

public void tupleAdded(TupleAddedEvent event)

Event when a new tuple is added to the result.

Specified by:

tupleAdded in interface QueryListener

Parameters:

event - add event

tupleUpdated

public void tupleUpdated(TupleUpdatedEvent event)

Event when an existing tuple in the result is updated.

Specified by:

tupleUpdated in interface QueryListener

Parameters:

event - update event

snapshotBegin

public void snapshotBegin(BeginSnapshotEvent event)

Event to indicate the start of the result snapshot. This is the first method called when a query starts returning results, but this method is also called to indicate a reset (a complete restart of the query.)

Specified by:

snapshotBegin in interface QueryListener

Parameters:

event - snapshot begin

snapshotEnd

public void snapshotEnd(EndSnapshotEvent event)

Event to indicate the query snapshot is complete.

Specified by:

snapshotEnd in interface QueryListener

Parameters:

event - snapshot end

deleteBegin

public void deleteBegin(BeginDeleteEvent event)

Event to indicate the start of delete query.

Specified by:

deleteBegin in interface QueryListener

Parameters:

event - delete begin

deleteEnd

public void deleteEnd(EndDeleteEvent event)

Event to indicate the delete query is complete.

Specified by:

deleteEnd in interface QueryListener

Parameters:

event - delete end

exceptionRaised

public void exceptionRaised(QueryExceptionEvent event)

Event when an exception occurs during the query. Since 1.3, reaching the row limit is considered an exception.

Specified by:

exceptionRaised in interface QueryListener

Parameters:

event - exception event

queryClosed

public void queryClosed(QueryClosedEvent event)

Event when a query being listened to is closed.

Specified by:

queryClosed in interface QueryListener

Parameters:

event - query closed event