org.springframework.integration.message
Class RetrievalBlockingMessageStore

java.lang.Object
  org.springframework.integration.message.RetrievalBlockingMessageStore

All Implemented Interfaces:

MessageStore

public class RetrievalBlockingMessageStore
extends java.lang.Object
implements MessageStore

A MessageStore implementation whose get and remove methods block until a message is available.

Alternative methods that accept an explicit timeout value are also available.

Author:

Mark Fisher

Nested Class Summary

private static class

RetrievalBlockingMessageStore.MessageHolder A wrapper class to enable null messages in the queue.

Field Summary

private java.lang.Object	listenerMonitor
private java.util.concurrent.ConcurrentMap<java.lang.Object,java.util.List<java.util.concurrent.SynchronousQueue<RetrievalBlockingMessageStore.MessageHolder>>>	listeners
private MessageStore	targetMessageStore

Constructor Summary

RetrievalBlockingMessageStore(int capacity)
Create a wrapper for a SimpleMessageStore so that its retrieval methods will block.

RetrievalBlockingMessageStore(MessageStore messageStore)
Create a wrapper for the provided MessageStore so that its retrieval methods will block.

Method Summary

Message<?>	get(java.lang.Object key)
Message<?>	get(java.lang.Object key, long timeout)
java.util.List<Message<?>>	list()
Message<?>	put(java.lang.Object key, Message<?> message)
Message<?>	remove(java.lang.Object key)
Message<?>	remove(java.lang.Object key, long timeout)
int	size()
private Message<?>	waitForMessage(java.lang.Object key, long timeout, boolean shouldRemove)

Methods inherited from class java.lang.Object

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

Field Detail

targetMessageStore

private final MessageStore targetMessageStore

listeners

private final java.util.concurrent.ConcurrentMap<java.lang.Object,java.util.List<java.util.concurrent.SynchronousQueue<RetrievalBlockingMessageStore.MessageHolder>>> listeners

listenerMonitor

private final java.lang.Object listenerMonitor

Constructor Detail

RetrievalBlockingMessageStore

public RetrievalBlockingMessageStore(MessageStore messageStore)

Create a wrapper for the provided MessageStore so that its retrieval methods will block.

Parameters:

messageStore - the MessageStore instance to wrap

RetrievalBlockingMessageStore

public RetrievalBlockingMessageStore(int capacity)

Create a wrapper for a SimpleMessageStore so that its retrieval methods will block.

Parameters:

capacity - the capacity of the MessageStore

Method Detail

size

public int size()

Specified by:

size in interface MessageStore

put

public Message<?> put(java.lang.Object key,
                      Message<?> message)

Specified by:

put in interface MessageStore

get

public Message<?> get(java.lang.Object key)

Specified by:

get in interface MessageStore

get

public Message<?> get(java.lang.Object key,
                      long timeout)

list

public java.util.List<Message<?>> list()

Specified by:

list in interface MessageStore

remove

public Message<?> remove(java.lang.Object key)

Specified by:

remove in interface MessageStore

remove

public Message<?> remove(java.lang.Object key,
                         long timeout)

waitForMessage

private Message<?> waitForMessage(java.lang.Object key,
                                  long timeout,
                                  boolean shouldRemove)