Make it easier to customize or extend the HandlerAdapter for annotated methods [SPR-7792]

[spring-projects-issues]

Mark Pollack opened SPR-7792 and commented

It is very difficult to override any behavior on AnnotationMethodHandlerAdapter with a subclass. This class should be more open to extension and automatic configuration in the namespace.

Avoiding the use of the namespace the registration of a custom AnnotationMethodHandlerAdapter is also complicated by the fact that other parts of the framework need to be configured when the HandlerAdapter changes. These are typically done by the namespace handler for mvc, but as one can't register a custom HandlerAdapter in the namespace, one has to duplicate that non obvious configuration.

See
https://github.com/SpringSource/spring-data-document/tree/master/spring-data-document-core/src/main/java/org/springframework/data/document/web

for cut-n-paste extension of AnnotationMethodHandlerAdapter that I had created and its registration is done in

https://github.com/SpringSource/spring-data-document-examples/tree/master/myrestaurants-analytics/src/main/java/com/springone/myrestaurants/config

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Affects: 3.0 GA

[spring-projects-issues]

Rossen Stoyanchev commented

The two requirement -- for a HandlerAdapter more open to extension and for a form of configuration that makes it easy to customize or extend a HandlerAdapter -- are both met in Spring 3.1 with the new RequestMappingHandlerAdapter and also MVC Java config, which makes it much easier to customize or even replace the RequestMappingHandlerAdapter.

[spring-projects-issues]

Rossen Stoyanchev commented

Modified the title (was: "Support for providing a custom AnnotationMethodHandlerAdapter")