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.action;
22
23 import java.io.Serializable;
24
25 /**
26 * <p>A class that encapsulates the error messages being reported by the
27 * <code>validate()</code> method of an <code>ActionForm</code>. Validation
28 * errors are either global to the entire <code>ActionForm</code> bean they
29 * are associated with, or they are specific to a particular bean property
30 * (and, therefore, a particular input field on the corresponding form).</p>
31 *
32 * <p>Each individual error is described by an <code>ActionMessage</code>
33 * object, which contains a message key (to be looked up in an appropriate
34 * message resources database), and up to four placeholder arguments used for
35 * parametric substitution in the resulting message.</p>
36 *
37 * <p><strong>IMPLEMENTATION NOTE</strong> - It is assumed that these objects
38 * are created and manipulated only within the context of a single thread.
39 * Therefore, no synchronization is required for access to internal
40 * collections.</p>
41 *
42 * @version $Rev$ $Date: 2005-08-06 18:03:30 -0400 (Sat, 06 Aug 2005)
43 * $
44 */
45 public class ActionErrors extends ActionMessages implements Serializable {
46 private static final long serialVersionUID = -962678529916763747L;
47
48 // --------------------------------------------------------- Public Methods
49
50 /**
51 * <p>Create an empty <code>ActionErrors</code> object.</p>
52 */
53 public ActionErrors() {
54 super();
55 }
56
57 /**
58 * <p>Create an <code>ActionErrors</code> object initialized with the
59 * given messages.</p>
60 *
61 * @param messages The messages to be initially added to this object. This
62 * parameter can be <code>null</code>.
63 * @since Struts 1.1
64 */
65 public ActionErrors(ActionErrors messages) {
66 super(messages);
67 }
68 }