com.espertech.esper.core.service

Class InsertIntoLatchSpin

java.lang.Object

com.espertech.esper.core.service.InsertIntoLatchSpin

public class InsertIntoLatchSpin
extends Object

A spin-locking implementation of a latch for use in guaranteeing delivery between a single event produced by a single statement and consumable by another statement.

Constructor Summary

Constructors

Constructor and Description
InsertIntoLatchSpin(InsertIntoLatchFactory factory) Ctor - use for the first and unused latch to indicate completion.
InsertIntoLatchSpin(InsertIntoLatchFactory factory, InsertIntoLatchSpin earlier, long msecTimeout, EventBean payload) Ctor.

Method Summary

Modifier and Type	Method and Description
EventBean	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.
boolean	isCompleted() Returns true if the dispatch completed for this future.

Methods inherited from class java.lang.Object

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

Constructor Detail

InsertIntoLatchSpin

public InsertIntoLatchSpin(InsertIntoLatchFactory factory,
                           InsertIntoLatchSpin earlier,
                           long msecTimeout,
                           EventBean payload)

Ctor.

Parameters:

factory - the latch factory

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

msecTimeout - the timeout after which delivery occurs

payload - the payload is an event to deliver

InsertIntoLatchSpin

public InsertIntoLatchSpin(InsertIntoLatchFactory factory)

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

Parameters:

factory - the latch factory

Method Detail

isCompleted

public boolean isCompleted()

Returns true if the dispatch completed for this future.

Returns:

true for completed, false if not

await

public EventBean await()

Blocking call that returns only when the earlier latch completed.

Returns:

payload of the latch

done

public void done()

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