| package org.apache.velocity.runtime.parser.node; |
| |
| /* |
| * 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 org.slf4j.Logger; |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| |
| /** |
| * Abstract class that is used to execute an arbitrary |
| * method that is in introspected. This is the superclass |
| * for the PutExecutor and SetPropertyExecutor. |
| * |
| * There really should be a superclass for this and AbstractExecutor (which should |
| * be refactored to GetExecutor) because they differ only in the execute() method. |
| * |
| * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a> |
| * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a> |
| * @author <a href="mailto:henning@apache.org">Henning P. Schmiedehausen</a> |
| * @version $Id$ |
| * @since 1.5 |
| */ |
| public abstract class SetExecutor |
| { |
| /** Class logger */ |
| protected Logger log = null; |
| |
| /** |
| * Method to be executed. |
| */ |
| private Method method = null; |
| |
| /** |
| * Execute method against context. |
| * @param o |
| * @param value |
| * @return The result of the invocation. |
| * @throws IllegalAccessException |
| * @throws InvocationTargetException |
| */ |
| public abstract Object execute(Object o, Object value) |
| throws IllegalAccessException, InvocationTargetException; |
| |
| /** |
| * Tell whether the executor is alive by looking |
| * at the value of the method. |
| * @return True if the executor is alive. |
| */ |
| public boolean isAlive() |
| { |
| return (method != null); |
| } |
| |
| /** |
| * @return The method to invoke. |
| */ |
| public Method getMethod() |
| { |
| return method; |
| } |
| |
| /** |
| * @param method |
| */ |
| protected void setMethod(final Method method) |
| { |
| this.method = method; |
| } |
| } |