com.espertech.esper.client
Interface EPListenable

All Known Subinterfaces:

EPStatement, EPStatementSPI

All Known Implementing Classes:

EPStatementImpl

public interface EPListenable

Interface to add and remove update listeners.

Method Summary

void	addListener(StatementAwareUpdateListener listener) Add a statement-aware listener that observes events.
void	addListener(UpdateListener listener) Add a listener that observes events.
java.util.Iterator<StatementAwareUpdateListener>	getStatementAwareListeners() Returns an iterator of statement-aware update listeners.
java.util.Iterator<UpdateListener>	getUpdateListeners() Returns an iterator of update listeners.
void	removeAllListeners() Remove all listeners.
void	removeListener(StatementAwareUpdateListener listener) Remove a statement-aware listener that observes events.
void	removeListener(UpdateListener listener) Remove a listener that observes events.

Method Detail

addListener

void addListener(UpdateListener listener)

Add a listener that observes events.

Parameters:

listener - to add

Throws:

java.lang.IllegalStateException - when attempting to add a listener to a destroyed statement

removeListener

void removeListener(UpdateListener listener)

Remove a listener that observes events.

Parameters:

listener - to remove

removeAllListeners

void removeAllListeners()

Remove all listeners.

addListener

void addListener(StatementAwareUpdateListener listener)

Add a statement-aware listener that observes events.

Parameters:

listener - to add

Throws:

java.lang.IllegalStateException - when attempting to add a listener to a destroyed statement

removeListener

void removeListener(StatementAwareUpdateListener listener)

Remove a statement-aware listener that observes events.

Parameters:

listener - to remove

getStatementAwareListeners

java.util.Iterator<StatementAwareUpdateListener> getStatementAwareListeners()

Returns an iterator of statement-aware update listeners.

The returned iterator does not allow the remove operation.

Returns:

iterator of statement-aware update listeners

getUpdateListeners

java.util.Iterator<UpdateListener> getUpdateListeners()

Returns an iterator of update listeners.

The returned iterator does not allow the remove operation.

Returns:

iterator of update listeners