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SimpleChannel is now QueueChannel. Also added RendezvousChannel for the zero-capacity SynchronousQueue-based version.

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This commit is contained in:
Mark Fisher
2008-04-22 20:26:19 +00:00
parent 4b01a3a09c
commit bf0f8b16ec
50 changed files with 354 additions and 330 deletions
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6
spring-integration-reference/src/core-api.xml
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@@ -121,16 +121,16 @@ new GenericMessage&lt;T&gt;(T payload, MessageHeader headerToCopy)</programlisti
When sending a message, the return value will be <emphasis>true</emphasis> if the message is sent successfully.
If the send call times out or is interrupted, then it will return <emphasis>false</emphasis>. Likewise when
receiving a message, the return value will be <emphasis>null</emphasis> in the case of a timeout or interrupt.
The <classname>SimpleChannel</classname> implementation wraps a queue. It provides a no-argument constructor as
The <classname>QueueChannel</classname> implementation wraps a queue. It provides a no-argument constructor as
well as a constructor that accepts the queue capacity:
<programlisting>public SimpleChannel(int capacity)</programlisting>
<programlisting>public QueueChannel(int capacity)</programlisting>
Specifying a capacity of 0 will create a "direct-handoff" channel where a sender will block until the channel's
<methodname>receive()</methodname> method is called. Otherwise a channel that has not reached its capacity limit
will store messages in its internal queue, and the <methodname>send()</methodname> method will return immediately
even if no receiver is ready to handle the message.
</para>
<para>
Whereas the <classname>SimpleChannel</classname> enforces first-in/first-out (FIFO) ordering, the
Whereas the <classname>QueueChannel</classname> enforces first-in/first-out (FIFO) ordering, the
<classname>PriorityChannel</classname> is an alternative implementation that allows for messages to be ordered
within the channel based upon a priority. By default the priority is determined by the
'<literal>priority</literal>' property within each message's header. However, for custom priority determination