    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
    015    package org.apache.tapestry5.plastic;
    016
    017    import 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     */
    023    public 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    }