Provide Method Invocation Interceptor
-------------------------------------
Key: CXF-2709
URL: https://issues.apache.org/jira/browse/CXF-2709
Project: CXF
Issue Type: New Feature
Components: Configuration, Core, JAX-RS, JAX-WS Runtime
Affects Versions: 2.2.5
Environment: JAX-RS, JAX-WS
Reporter: Stephen Todd
It would be helpful if there was some kind of MethodInvocationInterceptor (or
alternatively with In/Out variants) that could be applied against Invokers
before they do the actual method call for jax-rs and jax-ws. I'm thinking the
place that the interceptor would be called is in
AbstractInvoker.performInvocation() around m.invoke().
What this provides for is the ability to perform some action or filtering based
on information from the java.lang.Method, parameter and return values before
or after the invocation is actually made.
Two cases that I am looking at are to be able to check for annotations on a
method and do some processing for security, transaction management, and/or
validation. Currently, the only way to be able to perform logic on custom
annotations is to create proxies around singleton beans or something like
aspectj. By allowing for these kind of interceptors, this would no longer be
necessary.
These interceptors make it simple to do things such as check for
spring-security @Pre/PostAuthorize annotations and apply security constraints.
Likewise, I'm also wanting to implement JSR-303 validation checking against
method parameters like is done for spring @Controller classes. This would keep
cxf's jaxrs implementation on par with spring's rest framework. Adding
@Transactional logic would also be possible through this.
In jax-rs, not having this creates difficulty providing this logic since using
singletons imposes the requirement that the resources be stateless. The java
changes would be simple, though it would also need some work done in spring
configuration code as well.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
