Updated @Handler and @Publisher JavaDoc.

org.springframework.integration/src/main/java/org/springframework/integration/annotation/Handler.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2007 the original author or authors.
+ * 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.
@@ -23,11 +23,21 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
-
 /**
  * Indicates that a method is capable of handling a message or message payload.
- * The method may only accept a single parameter, and the enclosing class should
- * be annotated with {@link MessageEndpoint @MessageEndpoint}.
+ * <p>
+ * A method annotated with @Handler may accept a parameter of type
+ * {@link org.springframework.integration.message.Message} or of the expected
+ * Message payload's type. Any type conversion supported by
+ * {@link org.springframework.beans.SimpleTypeConverter} will be applied to
+ * the Message payload if necessary. Header values can also be passed as
+ * Message parameters by using the
+ * {@link org.springframework.integration.handler.annotation.Header @Header}
+ * parameter annotation.
+ * <p>
+ * Return values from the annotated method may be of any type. If the return
+ * value is not a Message, a reply Message will be created with that object
+ * as its payload.
  * 
  * @author Mark Fisher
  */

org.springframework.integration/src/main/java/org/springframework/integration/aop/Publisher.java

@@ -24,8 +24,10 @@ import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
 /**
- * Indicates that the method's return value should be published to the specified
+ * Indicates that the method's return value, thrown exception, or
+ * invocation arguments should be published to the specified
  * channel. The value will only be published if non-null.
+ * The default payload type is 'return value'.
  * 
  * @author Mark Fisher
  */
@@ -35,8 +37,15 @@ import java.lang.annotation.Target;
 @Documented
 public @interface Publisher {
 
+	/**
+	 * name of the channel where Messages should be sent
+	 */
 	String channel();
 
+	/**
+	 * type of payload to intercept and send
+	 * @see MessagePublishingInterceptor.PayloadType
+	 */
 	MessagePublishingInterceptor.PayloadType payloadType()
 			default MessagePublishingInterceptor.PayloadType.RETURN_VALUE;