org.openspaces.events.polling.receive
Class ExclusiveReadReceiveOperationHandler

java.lang.Object
  org.openspaces.events.polling.receive.AbstractNonBlockingReceiveOperationHandler
      org.openspaces.events.polling.receive.ExclusiveReadReceiveOperationHandler

All Implemented Interfaces:

ReceiveOperationHandler

public class ExclusiveReadReceiveOperationHandler
extends AbstractNonBlockingReceiveOperationHandler

Performs single read operation using GigaSpace.read(Object,long) under an exclusive read lock. This receive operation handler allows to lock entries so other receive operations won't be able to obtain it (mimics the take operation) but without actually performing a take from the Space. Note, this receive operation handler must be performed under a transaction.

Author:

kimchy

Constructor Summary

ExclusiveReadReceiveOperationHandler()

Method Summary

protected Object	doReceiveBlocking(Object template, GigaSpace gigaSpace, long receiveTimeout) Performs single read operation using GigaSpace.read(Object,long) under an exclusive read lock.
protected Object	doReceiveNonBlocking(Object template, GigaSpace gigaSpace) Performs single read operation using GigaSpace.read(Object,long) under an exclusive read lock with no timeout.

Methods inherited from class org.openspaces.events.polling.receive.AbstractNonBlockingReceiveOperationHandler

receive, setNonBlocking, setNonBlockingFactor

Methods inherited from class java.lang.Object

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

Constructor Detail

ExclusiveReadReceiveOperationHandler

public ExclusiveReadReceiveOperationHandler()

Method Detail

doReceiveBlocking

protected Object doReceiveBlocking(Object template,
                                   GigaSpace gigaSpace,
                                   long receiveTimeout)
                            throws DataAccessException

Performs single read operation using GigaSpace.read(Object,long) under an exclusive read lock. This receive operation handler allows to lock entries so other receive operations won't be able to obtain it (mimics the take operation) but without actually performing a take from the Space. Note, this receive operation handler must be performed under a transaction.

Specified by:

doReceiveBlocking in class AbstractNonBlockingReceiveOperationHandler

Throws:

DataAccessException

doReceiveNonBlocking

protected Object doReceiveNonBlocking(Object template,
                                      GigaSpace gigaSpace)
                               throws DataAccessException

Performs single read operation using GigaSpace.read(Object,long) under an exclusive read lock with no timeout. This receive operation handler allows to lock entries so other receive operations won't be able to obtain it (mimics the take operation) but without actually performing a take from the Space. Note, this receive operation handler must be performed under a transaction.

Specified by:

doReceiveNonBlocking in class AbstractNonBlockingReceiveOperationHandler

Throws:

DataAccessException