    001// Copyright 2011 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007// http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014
    015package org.apache.tapestry5.plastic;
    016
    017import java.lang.reflect.Method;
    018
    019/**
    020 * Similiar to {@link Method}, this allows a method of a Plastic class to be invoked regardless of visibility. Plastic
    021 * ensures that reflection is not necessary.
    022 */
    023public interface MethodHandle
    024{
    025    /**
    026     * Invokes the method for this handle on the instance.
    027     *
    028     * @param instance
    029     *            the instance containing the method to invoke
    030     * @param arguments
    031     *            the arguments, if any, to pass to the method. Wrapper types will be unwrapped as necessary
    032     *            to perform the invocation.
    033     * @return result object encapsulating the actual return value or the checked exception thrown by the method
    034     * @throws ClassCastException
    035     *             if instance is not the correct type for this method.
    036     * @throws RuntimeException
    037     *             if the actual method throws a runtime exception
    038     */
    039    MethodInvocationResult invoke(Object instance, Object... arguments);
    040}