1 /* 2 * $Id$ 3 * 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 package org.apache.struts.chain.commands; 22 23 import org.apache.commons.chain.Command; 24 import org.apache.struts.chain.contexts.ActionContext; 25 import org.apache.struts.config.ForwardConfig; 26 27 /** 28 * Look up and execute a commons-chain {@code Command} based on properties of 29 * the ActionContext's {@code forwardConfig} property. 30 */ 31 public class ExecuteForwardCommand extends ExecuteCommand { 32 33 /** 34 * Return the command specified by the {@code command} and {@code catalog} 35 * properties of the {@code forwardConfig} property of the given 36 * {@code ActionContext}. If {@code forwardConfig} is null, return null. 37 * 38 * @param context Our ActionContext 39 * 40 * @return Command to execute or null 41 */ 42 protected Command<ActionContext> getCommand(ActionContext context) { 43 ForwardConfig forwardConfig = context.getForwardConfig(); 44 45 if (forwardConfig == null) { 46 return null; 47 } 48 49 return getCommand(forwardConfig.getCommand(), forwardConfig.getCatalog()); 50 } 51 52 /** 53 * Determine whether the forwardConfig should be processed. 54 * 55 * @param context The ActionContext we are processing 56 * 57 * @return {@code true} if the given {@code ActionContext} has a non-null 58 * {@code forwardConfig} property. 59 */ 60 protected boolean shouldProcess(ActionContext context) { 61 return (context.getForwardConfig() != null); 62 } 63 }