1 /*
2 * $Id: ValidateActionForm.java 471754 2006-11-06 14:55:09Z husted $
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.servlet;
22
23 import org.apache.commons.logging.Log;
24 import org.apache.commons.logging.LogFactory;
25 import org.apache.struts.action.ActionErrors;
26 import org.apache.struts.action.ActionForm;
27 import org.apache.struts.action.ActionMapping;
28 import org.apache.struts.chain.commands.AbstractValidateActionForm;
29 import org.apache.struts.chain.contexts.ActionContext;
30 import org.apache.struts.chain.contexts.ServletActionContext;
31 import org.apache.struts.config.ActionConfig;
32
33 /**
34 * <p>Validate the properties of the form bean for this request. If there are
35 * any validation errors, execute the child commands in our chain; otherwise,
36 * proceed normally. Also, if any errors are found and the request is a
37 * multipart request, rollback the <code>MultipartRequestHandler</code>.</p>
38 *
39 * @version $Rev: 471754 $ $Date: 2005-06-04 10:58:46 -0400 (Sat, 04 Jun 2005)
40 * $
41 */
42 public class ValidateActionForm extends AbstractValidateActionForm {
43 // ------------------------------------------------------ Instance Variables
44 private static final Log log = LogFactory.getLog(ValidateActionForm.class);
45
46 // ------------------------------------------------------- Protected Methods
47
48 /**
49 * <p>Call the <code>validate()</code> method of the specified form bean,
50 * and return the resulting <code>ActionErrors</code> object.</p>
51 *
52 * @param context The context for this request
53 * @param actionForm The form bean for this request
54 */
55 protected ActionErrors validate(ActionContext context,
56 ActionConfig actionConfig, ActionForm actionForm) {
57 ServletActionContext saContext = (ServletActionContext) context;
58 ActionErrors errors =
59 (actionForm.validate((ActionMapping) actionConfig,
60 saContext.getRequest()));
61
62 // Special handling for multipart request
63 if ((errors != null) && !errors.isEmpty()) {
64 if (actionForm.getMultipartRequestHandler() != null) {
65 if (log.isTraceEnabled()) {
66 log.trace(" Rolling back multipart request");
67 }
68
69 actionForm.getMultipartRequestHandler().rollback();
70 }
71 }
72
73 return errors;
74 }
75 }