| package org.apache.maven.index.cli; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| import java.lang.reflect.InvocationHandler; |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| /** |
| * An {@link java.lang.reflect.InvocationHandler} that can be extended with methods from the proxied interface. While |
| * invocation it will look for a method within itself that matches the signature of the invoked proxy method. If found |
| * the method will be invoked and result returned, otherwise an {@link UnsupportedOperationException} will be thrown. |
| * |
| * @author Alin Dreghiciu |
| */ |
| public class PartialImplementation |
| implements InvocationHandler |
| { |
| |
| public Object invoke( final Object proxy, final Method method, final Object[] args ) |
| throws Throwable |
| { |
| try |
| { |
| final Method localMethod = getClass().getMethod( method.getName(), method.getParameterTypes() ); |
| return localMethod.invoke( this, args ); |
| } |
| catch ( NoSuchMethodException e ) |
| { |
| throw new UnsupportedOperationException( "Method " + method.getName() + "() is not supported" ); |
| } |
| catch ( IllegalAccessException e ) |
| { |
| throw new UnsupportedOperationException( "Method " + method.getName() + "() is not supported" ); |
| } |
| catch ( InvocationTargetException e ) |
| { |
| throw e.getCause(); |
| } |
| } |
| |
| } |