| // Copyright 2011 The Apache Software Foundation |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package org.apache.tapestry5.internal.plastic; |
| |
| import org.apache.tapestry5.plastic.MethodHandle; |
| import org.apache.tapestry5.plastic.MethodInvocationResult; |
| |
| public class MethodHandleImpl implements MethodHandle |
| { |
| private final String className, methodDescription; |
| |
| private final int methodIndex; |
| |
| protected volatile PlasticClassHandleShim shim; |
| |
| public MethodHandleImpl(String className, String methodDescription, int methodIndex) |
| { |
| this.className = className; |
| this.methodDescription = methodDescription; |
| this.methodIndex = methodIndex; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return String.format("MethodHandle[%s %s]", className, methodDescription); |
| } |
| |
| @Override |
| public MethodInvocationResult invoke(Object instance, Object... arguments) |
| { |
| |
| if (instance == null) |
| throw new NullPointerException(String.format( |
| "Unable to invoke method %s of class %s, as provided instance is null.", methodDescription, |
| className)); |
| |
| return shim.invoke(instance, methodIndex, arguments); |
| } |
| |
| } |