Examples of java.lang.reflect.InvocationHandler.invoke()

Class java.lang.reflect.InvocationHandler

Examples of java.lang.reflect.InvocationHandler.invoke()

java.lang.reflect.InvocationHandler.invoke()
Processes a method invocation on a proxy instance and returns the result. This method will be invoked on an invocation handler when a method is invoked on a proxy instance that it is associated with. @param proxy the proxy instance that the method was invoked on @param method the Method instance corresponding tothe interface method invoked on the proxy instance. The declaring class of the Method object will be the interface that the method was declared in, which may be a superinterface of the proxy interface that the proxy class inherits the method through. @param args an array of objects containing the values of thearguments passed in the method invocation on the proxy instance, or null if interface method takes no arguments. Arguments of primitive types are wrapped in instances of the appropriate primitive wrapper class, such as java.lang.Integer or java.lang.Boolean. @return the value to return from the method invocation on theproxy instance. If the declared return type of the interface method is a primitive type, then the value returned by this method must be an instance of the corresponding primitive wrapper class; otherwise, it must be a type assignable to the declared return type. If the value returned by this method is null and the interface method's return type is primitive, then a NullPointerException will be thrown by the method invocation on the proxy instance. If the value returned by this method is otherwise not compatible with the interface method's declared return type as described above, a ClassCastException will be thrown by the method invocation on the proxy instance. @throws Throwable the exception to throw from the methodinvocation on the proxy instance. The exception's type must be assignable either to any of the exception types declared in the throws clause of the interface method or to the unchecked exception types java.lang.RuntimeException or java.lang.Error. If a checked exception is thrown by this method that is not assignable to any of the exception types declared in the throws clause of the interface method, then an {@link UndeclaredThrowableException} containing theexception that was thrown by this method will be thrown by the method invocation on the proxy instance. @see UndeclaredThrowableException


         Proxy proxy = (Proxy) ic.lookup(jndiName);


         // call findByPrimary on the target
         InvocationHandler ih = Proxy.getInvocationHandler(proxy);
         return (EJBObject) ih.invoke(proxy, GET_EJB_OBJECT, new Object[] {id});
      }
      catch (RemoteException e)
      {
         throw e;
      }

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                 * the call we will end up here again and we'll get a
                 * StackOverflowError.
                 */
                final InvocationHandler invocationHandler = MockRepository.removeMethodProxy(method);
                try {
                    returnValue = invocationHandler.invoke(object, method, args);
                } finally {
                    // Set the method proxy again after the invocation
                    MockRepository.putMethodProxy(method, invocationHandler);
                }

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        @Override
        public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
            for (InvocationHandlerFactory factory: factories) {
                InvocationHandler handler = factory.tryGetInvocationHandler(proxy, method, args);
                if (handler != null) {
                    return handler.invoke(proxy, method, args);
                }
            }
            throw new UnsupportedOperationException("No handler for method: " + method);
        }
    }

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/* 181 */         ic = new InitialContext();
/*     */       }
/* 183 */       Proxy proxy = (Proxy)ic.lookup(this.jndiName);
/*     */ 
/* 186 */       InvocationHandler ih = Proxy.getInvocationHandler(proxy);
/* 187 */       return (EJBObject)ih.invoke(proxy, GET_EJB_OBJECT, new Object[] { this.id });
/*     */     }
/*     */     catch (RemoteException e)
/*     */     {
/* 191 */       throw e;
/*     */     }

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  private final class Dispatcher implements InvocationHandler {
    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
      InvocationHandler invocationHandler = invocationMap.get(method);
      if (invocationHandler == null) throw new UnsupportedOperationException("No implement method: " + method);
      return invocationHandler.invoke(proxy, method, args);
    }
  }


}

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    Assert.assertTrue("runner should be InvocationHandler", someDynamicService instanceof InvocationHandler);
    Assert.assertTrue("runner should be FilterModel", someDynamicService instanceof FilterModel);


    try {
      InvocationHandler invocationHandler = (InvocationHandler)someDynamicService;
      Assert.assertEquals("Daft result", invocationHandler.invoke(null, null, null));
    } catch (Throwable throwable) {
      throw new RuntimeException(throwable);
    }
  }
}

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