org.jboss.invocation
Class MethodInterceptor

java.lang.Object
  org.jboss.invocation.MethodInterceptor

All Implemented Interfaces:

Interceptor

public final class MethodInterceptor
extends Object
implements Interceptor

A method interceptor. The target method should be non-final and must accept no parameters or a single parameter of type InvocationContext (or any supertype thereof). The method must belong to the given interceptor object's class or one of its supertypes.

Author:

David M. Lloyd

Constructor Summary

MethodInterceptor(Object interceptorInstance, Method method)
Construct a new instance.

MethodInterceptor(Object interceptorInstance, Method method, boolean changeMethod)
Construct a new instance.

Method Summary

Object

processInvocation(InterceptorContext context) Process an invocation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MethodInterceptor

public MethodInterceptor(Object interceptorInstance,
                         Method method,
                         boolean changeMethod)

Construct a new instance. The given method should be a proper interceptor method; otherwise invocation may fail.

Parameters:

interceptorInstance - the interceptor object instance

method - the interceptor method

changeMethod - true to change the method on the context to equal the given method, false to leave it as-is

MethodInterceptor

public MethodInterceptor(Object interceptorInstance,
                         Method method)

Construct a new instance. The given method should be a proper interceptor method; otherwise invocation may fail.

Parameters:

interceptorInstance - the interceptor object instance

method - the interceptor method

Method Detail

processInvocation

public Object processInvocation(InterceptorContext context)
                         throws Exception

Process an invocation. The invocation can be handled directly, or passed on to the next processor in the chain.

Specified by:

processInvocation in interface Interceptor

Parameters:

context - the interceptor context

Returns:

the result of the invocation

Throws:

Exception - If the underlying invocation resulted in some exception