Package org.openspaces.events.polling.receive

Class MultiExclusiveReadReceiveOperationHandler

java.lang.Object

org.openspaces.events.polling.receive.AbstractNonBlockingReceiveOperationHandler

org.openspaces.events.polling.receive.AbstractMemoryOnlySearchReceiveOperationHandler

org.openspaces.events.polling.receive.AbstractFifoGroupingReceiveOperationHandler

org.openspaces.events.polling.receive.MultiExclusiveReadReceiveOperationHandler

All Implemented Interfaces:

ReceiveOperationHandler

public class MultiExclusiveReadReceiveOperationHandler
extends AbstractFifoGroupingReceiveOperationHandler

First tries and perform a GigaSpace.readMultiple(Object, int, ReadModifiers) using the provided template, configured maxEntries (defaults to 50) and the configured fifoGroups (default to false).

If no values are returned, will perform a blocking read operation using GigaSpace.read(Object, long, ReadModifiers).

Read operations are performed under an exclusive read lock which mimics the similar behavior as take without actually taking the entry from the space.

Author:

kimchy

Field Summary

Fields inherited from class org.openspaces.events.polling.receive.AbstractFifoGroupingReceiveOperationHandler

useFifoGrouping

Fields inherited from class org.openspaces.events.polling.receive.AbstractMemoryOnlySearchReceiveOperationHandler

useMemoryOnlySearch

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

nonBlocking, nonBlockingFactor

Constructor Summary

Constructors

Constructor	Description
MultiExclusiveReadReceiveOperationHandler()

Method Summary

Modifier and Type	Method	Description
protected Object	doReceiveBlocking(Object template, GigaSpace gigaSpace, long receiveTimeout)	First tries and perform a GigaSpace.readMultiple(Object, int, ReadModifiers) using the provided template, configured maxEntries (defaults to 50) and the configured fifoGroups (default to false).
protected Object	doReceiveNonBlocking(Object template, GigaSpace gigaSpace)	Perform a GigaSpace.readMultiple(Object, int, ReadModifiers) using the provided template, configured maxEntries (defaults to 50) and the configured fifoGroups (default to false).
void	setMaxEntries(int maxEntries)	Sets the max entries the initial take multiple operation will perform.
String	toString()

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

isUseFifoGrouping, setUseFifoGrouping

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

isUseMemoryOnlySearch, setUseMemoryOnlySearch

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, wait, wait, wait

Constructor Details

MultiExclusiveReadReceiveOperationHandler

public MultiExclusiveReadReceiveOperationHandler()

Method Details

setMaxEntries

public void setMaxEntries(int maxEntries)

Sets the max entries the initial take multiple operation will perform.

doReceiveBlocking

protected Object doReceiveBlocking(Object template,
 GigaSpace gigaSpace,
 long receiveTimeout)
                            throws org.springframework.dao.DataAccessException

First tries and perform a GigaSpace.readMultiple(Object, int, ReadModifiers) using the provided template, configured maxEntries (defaults to 50) and the configured fifoGroups (default to false). If no values are returned, will perform a blocking read operation using GigaSpace.read(Object, long, ReadModifiers).

Read operations are performed under an exclusive read lock which mimics the similar behavior as take without actually taking the entry from the space.

Specified by:

doReceiveBlocking in class AbstractNonBlockingReceiveOperationHandler

Throws:

org.springframework.dao.DataAccessException

doReceiveNonBlocking

protected Object doReceiveNonBlocking(Object template,
 GigaSpace gigaSpace)
                               throws org.springframework.dao.DataAccessException

Perform a GigaSpace.readMultiple(Object, int, ReadModifiers) using the provided template, configured maxEntries (defaults to 50) and the configured fifoGroups (default to false).

Read operations are performed under an exclusive read lock which mimics the similar behavior as take without actually taking the entry from the space.

Specified by:

doReceiveNonBlocking in class AbstractNonBlockingReceiveOperationHandler

Throws:

org.springframework.dao.DataAccessException

toString

public String toString()

Overrides:

toString in class Object