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.struts.chain.contexts.ActionContext; 24 import org.apache.struts.config.ModuleConfig; 25 26 /** 27 * <p>Check to see if the controller is configured to prevent caching, and if 28 * so, request no cache flags to be set.</p> 29 * 30 * @version $Rev$ $Date: 2005-06-04 10:58:46 -0400 (Sat, 04 Jun 2005) 31 * $ 32 */ 33 public abstract class AbstractRequestNoCache extends ActionCommandBase { 34 // ---------------------------------------------------------- Public Methods 35 36 /** 37 * <p>Check to see if the controller is configured to prevent caching, and 38 * if so, request no cache flags to be set.</p> 39 * 40 * @param actionCtx The <code>Context</code> for the current request 41 * @return <code>false</code> so that processing continues 42 * @throws Exception if thrown by the Action class 43 */ 44 @Override 45 protected boolean execute_(ActionContext actionCtx) 46 throws Exception { 47 // Retrieve the ModuleConfig instance 48 ModuleConfig moduleConfig = actionCtx.getModuleConfig(); 49 50 // If the module is configured for no caching, request no caching 51 if (moduleConfig.getControllerConfig().getNocache()) { 52 requestNoCache(actionCtx); 53 } 54 55 return CONTINUE_PROCESSING; 56 } 57 58 // ------------------------------------------------------- Protected Methods 59 60 /** 61 * <p>Request no cache flags are set.</p> 62 * 63 * @param context The <code>Context</code> for this request 64 */ 65 protected abstract void requestNoCache(ActionContext context); 66 }