01: /*
02: * $Id: AbstractRequestNoCache.java 471754 2006-11-06 14:55:09Z husted $
03: *
04: * Licensed to the Apache Software Foundation (ASF) under one
05: * or more contributor license agreements. See the NOTICE file
06: * distributed with this work for additional information
07: * regarding copyright ownership. The ASF licenses this file
08: * to you under the Apache License, Version 2.0 (the
09: * "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: 471754 $ $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: public boolean execute(ActionContext actionCtx) throws Exception {
45: // Retrieve the ModuleConfig instance
46: ModuleConfig moduleConfig = actionCtx.getModuleConfig();
47:
48: // If the module is configured for no caching, request no caching
49: if (moduleConfig.getControllerConfig().getNocache()) {
50: requestNoCache(actionCtx);
51: }
52:
53: return (false);
54: }
55:
56: // ------------------------------------------------------- Protected Methods
57:
58: /**
59: * <p>Request no cache flags are set.</p>
60: *
61: * @param context The <code>Context</code> for this request
62: */
63: protected abstract void requestNoCache(ActionContext context);
64: }
|