2 Replies Latest reply on Jul 7, 2011 2:06 PM by Arjun Kumaar

    Passing information via InvocationContext in interceptors

    Arjun Kumaar Newbie

      Can I pass data in invocation context via remote method calls?

      I have two stateless session beans

      BeanA and BeanB

       

      I have an interceptor for each bean

       

      BeanAInterceptor for BeanA.methodA

      BeanBInterceptor for BeanB.methodB

       

      In BeanAInterceptor, I set some context data.

      In BeanA.methodA, I get an handle to BeanB and call BeanB.methodB

       

      In the process, BeanBInterceptor gets called and I want to read the context data

      that I set in BeanAInterceptor, but I get null.

       

      Is there any way to pass data via InvocationContext across remote calls if BeanA

      and BeanB are deployed in

       

      a. same jvm

      b. different jvm

      c. in a clustered environment.

       

      In short I want to send data across ejbs, but via interceptors and not

      as parameters to method calls.

       

      I am pasting the relevant code below.

       

      @Stateless

      public class BeanA {   

         

          @Resource

          SessionContext ctx;

         

          @Interceptors(BeanAInterceptor.class)

          public void methodA() {

              BeanBRemote bRemote = ctx

                          .getBusinessObject(BeanB.class);

              bRemote.methodB();

          }

         

      }

       

      public class BeanAInterceptor {

       

          @AroundInvoke

          public Object interceptA(InvocationContext ctx) throws Exception {

              Map<String, Object> ctxData = ctx.getContextData();

              ctxData.put("key", "value");

              return ctx.proceed();

          }

         

      }

       

      @Stateless

      public class BeanB {

       

          @Interceptors(BeanBInterceptor.class)

          public void methodB() {

              //do something

              return;

          }

       

      }

       

      public class BeanBInterceptor {

       

          @AroundInvoke

          public Object interceptB(InvocationContext ctx) throws Exception {

              Map<String, Object> ctxData = ctx.getContextData();

              Object val = ctxData.get("key"); //I get val as null here

              return ctx.proceed();

          }

         

      }

       

       

      Thanks

      Arjun