OPEN - issue INT-567: Add round-robin dispatching strategy

http://jira.springframework.org/browse/INT-567

Properly named AbstractUnicastDispatcher

org.springframework.integration/src/main/java/org/springframework/integration/channel/DirectChannel.java

@@ -16,7 +16,7 @@
 
 package org.springframework.integration.channel;
 
-import org.springframework.integration.dispatcher.AbstractHandleOnceDispatcher;
+import org.springframework.integration.dispatcher.AbstractUnicastDispatcher;
 import org.springframework.integration.dispatcher.RoundRobinDispatcher;
 
 /**
@@ -27,13 +27,13 @@ import org.springframework.integration.dispatcher.RoundRobinDispatcher;
  * @author Mark Fisher
  * @author Iwein Fuld
  */
-public class DirectChannel extends AbstractSubscribableChannel<AbstractHandleOnceDispatcher> {
+public class DirectChannel extends AbstractSubscribableChannel<AbstractUnicastDispatcher> {
 
 	public DirectChannel() {
 		super(new RoundRobinDispatcher());
 	}
 	
-	public DirectChannel(AbstractHandleOnceDispatcher dispatcher){
+	public DirectChannel(AbstractUnicastDispatcher dispatcher){
 		super(dispatcher);
 	}
 

org.springframework.integration/src/main/java/org/springframework/integration/dispatcher/AbstractUnicastDispatcher.java

@@ -1,3 +1,17 @@
+/* Copyright 2002-2008 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.springframework.integration.dispatcher;
 
 import java.util.Iterator;
@@ -23,9 +37,10 @@ import org.springframework.integration.message.MessageRejectedException;
  * will be tried through the implementation of the {@link #getHandlerIterator(List)} method.
  * 
  * @author Iwein Fuld
+ * @author Mark Fisher
  * 
  */
-public abstract class AbstractHandleOnceDispatcher extends AbstractDispatcher {
+public abstract class AbstractUnicastDispatcher extends AbstractDispatcher {
 
 	public final boolean dispatch(Message<?> message) {
 		boolean success = false;

org.springframework.integration/src/main/java/org/springframework/integration/dispatcher/FailOverDispatcher.java

@@ -22,13 +22,13 @@ import java.util.List;
 import org.springframework.integration.message.MessageHandler;
 
 /**
- * {@link AbstractHandleOnceDispatcher} that will try it's handlers in the
+ * {@link AbstractUnicastDispatcher} that will try it's handlers in the
  * same order every dispatch.
  * 
  * @author Mark Fisher
  * @author Iwein Fuld
  */
-public class FailOverDispatcher extends AbstractHandleOnceDispatcher {
+public class FailOverDispatcher extends AbstractUnicastDispatcher {
 
 
 	@Override

org.springframework.integration/src/main/java/org/springframework/integration/dispatcher/RoundRobinDispatcher.java

@@ -23,13 +23,13 @@ import java.util.concurrent.atomic.AtomicInteger;
 import org.springframework.integration.message.MessageHandler;
 
 /**
- * Round-robin implementation of {@link AbstractHandleOnceDispatcher}. This
+ * Round-robin implementation of {@link AbstractUnicastDispatcher}. This
  * implementation will keep track of the index of the handler that has been
  * tried first and use a different starting handler every dispatch.
  * 
  * @author Iwein Fuld
  */
-public class RoundRobinDispatcher extends AbstractHandleOnceDispatcher {
+public class RoundRobinDispatcher extends AbstractUnicastDispatcher {
 
 	private AtomicInteger currentHandlerIndex = new AtomicInteger();
 

org.springframework.integration/src/test/java/org/springframework/integration/dispatcher/RoundRobinDispatcherConcurrentTests.java

@@ -22,7 +22,7 @@ public class RoundRobinDispatcherConcurrentTests {
 
 	private static final int TOTAL_EXECUTIONS = 40;
 
-	private AbstractHandleOnceDispatcher dispatcher = new RoundRobinDispatcher();
+	private AbstractUnicastDispatcher dispatcher = new RoundRobinDispatcher();
 
 	private ThreadPoolTaskExecutor scheduler = new ThreadPoolTaskExecutor();
 

org.springframework.integration/src/test/java/org/springframework/integration/dispatcher/RoundRobinDispatcherTests.java

@@ -35,7 +35,7 @@ import org.springframework.integration.message.MessageHandler;
 @RunWith(MockitoJUnit44Runner.class)
 public class RoundRobinDispatcherTests {
 
-	private AbstractHandleOnceDispatcher dispatcher = new RoundRobinDispatcher();
+	private AbstractUnicastDispatcher dispatcher = new RoundRobinDispatcher();
 
 	@Mock
 	private MessageHandler handler;