How to use the same ContainerRequestFilter for multiple projects?

I have two projects A and B in which B has dependency on A. So all the classes of A are available to B.

Now, I've defined a ContainerRequestFilter for intercepting some information from request. This is getting invoked if I call the end points of project A. But it's not getting invoked if I call end points of project B.

Obviously, the context roots of project A and project B are different.

Example: http://localhost:8080/projecta/..... http://localhost:8080/projectb/.....

Both the projects are archived in an ear and deployed in same ear.

I actually expected it to work like in the case of @AroundInvoke interceptor.

How to achieve that?

Wildfly 8.0 Resteasy Java EE 7