com.espertech.esper.epl.named
Class NamedWindowConsumerLatchSpin

java.lang.Object
  com.espertech.esper.epl.named.NamedWindowConsumerLatch
      com.espertech.esper.epl.named.NamedWindowConsumerLatchSpin

public class NamedWindowConsumerLatchSpin
extends NamedWindowConsumerLatch

A spin-locking implementation of a latch for use in guaranteeing delivery between a delta stream produced by a named window and consumable by another statement.

Constructor Summary

NamedWindowConsumerLatchSpin(NamedWindowConsumerLatchFactory factory)
Ctor - use for the first and unused latch to indicate completion.

NamedWindowConsumerLatchSpin(NamedWindowDeltaData deltaData, java.util.Map<EPStatementAgentInstanceHandle,java.util.List<NamedWindowConsumerView>> dispatchTo, NamedWindowConsumerLatchFactory factory, NamedWindowConsumerLatchSpin earlier)
Ctor.

Method Summary

void	await() Blocking call that returns only when the earlier latch completed.
void	done() Called to indicate that the latch completed and a later latch can start.
java.lang.Thread	getCurrentThread()
boolean	isCompleted() Returns true if the dispatch completed for this future.

Methods inherited from class com.espertech.esper.epl.named.NamedWindowConsumerLatch

getDeltaData, getDispatchTo

Methods inherited from class java.lang.Object

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

Constructor Detail

NamedWindowConsumerLatchSpin

public NamedWindowConsumerLatchSpin(NamedWindowDeltaData deltaData,
                                    java.util.Map<EPStatementAgentInstanceHandle,java.util.List<NamedWindowConsumerView>> dispatchTo,
                                    NamedWindowConsumerLatchFactory factory,
                                    NamedWindowConsumerLatchSpin earlier)

Ctor.

Parameters:

earlier - the latch before this latch that this latch should be waiting for

NamedWindowConsumerLatchSpin

public NamedWindowConsumerLatchSpin(NamedWindowConsumerLatchFactory factory)

Ctor - use for the first and unused latch to indicate completion.

Method Detail

isCompleted

public boolean isCompleted()

Returns true if the dispatch completed for this future.

Returns:

true for completed, false if not

await

public void await()

Blocking call that returns only when the earlier latch completed.

Specified by:

await in class NamedWindowConsumerLatch

getCurrentThread

public java.lang.Thread getCurrentThread()

Specified by:

getCurrentThread in class NamedWindowConsumerLatch

done

public void done()

Called to indicate that the latch completed and a later latch can start.

Specified by:

done in class NamedWindowConsumerLatch