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@Publisher and @Gateway JavaDocs

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Artem Bilan
2015-12-29 18:22:33 -05:00
committed by Gary Russell
parent f7e04918c5
commit 1bd955bef0
4 changed files with 39 additions and 11 deletions
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src/reference/asciidoc/message-publishing.adoc
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The AOP Message Publishing feature allows you to construct and send a message as a by-product of a method invocation.
For example, imagine you have a component and every time the state of this component changes you would like to be notified via a Message.
The easiest way to send such notifications would be to send a message to a dedicated channel, but how would you connect the method invocation that changes the state of the object to a message sending process, and how should the notification Message be structured? The AOP Message Publishing feature handles these responsibilities with a configuration-driven approach.
The easiest way to send such notifications would be to send a message to a dedicated channel, but how would you connect the method invocation that changes the state of the object to a message sending process, and how should the notification Message be structured?
The AOP Message Publishing feature handles these responsibilities with a configuration-driven approach.
[[message-publishing-config]]
=== Message Publishing Configuration
@@ -17,7 +18,7 @@ The annotation-driven approach allows you to annotate any method with the `@Publ
The Message will be constructed from the return value of the method invocation and sent to a channel specified by the 'channel' attribute.
To further manage message structure, you can also use a combination of both `@Payload` and `@Header` annotations.
Internally this message publishing feature of Spring Integration uses both Spring AOP by defining `PublisherAnnotationAdvisor` and Spring 3.0's Expression Language (SpEL) support, giving you considerable flexibility and control over the structure of the_Message_ it will publish.
Internally this message publishing feature of Spring Integration uses both Spring AOP by defining `PublisherAnnotationAdvisor` and Spring 3.0's Expression Language (SpEL) support, giving you considerable flexibility and control over the structure of the _Message_ it will publish.
The `PublisherAnnotationAdvisor` defines and binds the following variables: