2 * Copyright (C) 2001, 2002 The Mir-coders group
4 * This file is part of Mir.
6 * Mir is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * Mir is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Mir; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * In addition, as a special exception, The Mir-coders gives permission to link
21 * the code of this program with any library licensed under the Apache Software License,
22 * The Sun (tm) Java Advanced Imaging library (JAI), The Sun JIMI library
23 * (or with modified versions of the above that use the same license as the above),
24 * and distribute linked combinations including the two. You must obey the
25 * GNU General Public License in all respects for all of the code used other than
26 * the above mentioned libraries. If you modify this file, you may extend this
27 * exception to your version of the file, but you are not obligated to do so.
28 * If you do not wish to do so, delete this exception statement from your version.
33 import java.util.List;
35 import mir.session.Request;
36 import mir.session.ValidationError;
39 public class ValidationHelper {
41 * Convenience validation method to test whether a field has been filled in
45 * @param anErrorMessageResource
46 * @param aValidationResults
50 public static boolean testFieldEntered(Request aRequest, String aFieldName, String anErrorMessageResource, List aValidationResults) {
51 Object value = aRequest.getParameter(aFieldName);
52 if (value==null || !(value instanceof String) || ((String) value).trim().length()==0) {
53 aValidationResults.add(new ValidationError(aFieldName, anErrorMessageResource));
61 * Convenience validation method to test wether a field is numeric
65 * @param anErrorMessageResource
66 * @param aValidationResults
70 public static boolean testFieldIsNumeric(Request aRequest, String aFieldName, String anErrorMessageResource, List aValidationResults) {
71 Object value = aRequest.getParameter(aFieldName);
74 Integer.parseInt((String) value);
78 aValidationResults.add(new ValidationError(aFieldName, anErrorMessageResource));
86 * Convenience validation method to test whether a field exceeds a given length
91 * @param anErrorMessageResource
92 * @param aValidationResults
96 public static boolean testFieldLength(Request aRequest, String aFieldName, int aMaxLength, String anErrorMessageResource, List aValidationResults) {
97 String value = aRequest.getParameter(aFieldName);
100 if (value.length()>aMaxLength) {
101 aValidationResults.add(new ValidationError(aFieldName, anErrorMessageResource));