[jboss-user] [EJB3] - Passing information via InvocationContext in interceptors

[Arjun Kumaar]

Arjun Kumaar [http://community.jboss.org/people/arjun_kumaar] created the discussion

"Passing information via InvocationContext in interceptors"

To view the discussion, visit: http://community.jboss.org/message/612633#612633

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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
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