libnanoxml2-java-doc 2.2.3.dfsg-5 / usr / share / doc / libnanoxml2-java / examples / Java / Chapter04-01 / MyValidator.java

/* MyValidator.java                                                NanoXML/Java
 *
 * $Revision: 1.1.1.1 $
 * $Date: 2001/07/16 22:10:51 $
 * $Name:  $
 *
 * This file is part of NanoXML 2 for Java.
 * Copyright (C) 2001 Marc De Scheemaecker, All Rights Reserved.
 *
 * This software is provided 'as-is', without any express or implied warranty.
 * In no event will the authors be held liable for any damages arising from the
 * use of this software.
 *
 * Permission is granted to anyone to use this software for any purpose,
 * including commercial applications, and to alter it and redistribute it
 * freely, subject to the following restrictions:
 *
 *  1. The origin of this software must not be misrepresented; you must not
 *     claim that you wrote the original software. If you use this software in
 *     a product, an acknowledgment in the product documentation would be
 *     appreciated but is not required.
 *
 *  2. Altered source versions must be plainly marked as such, and must not be
 *     misrepresented as being the original software.
 *
 *  3. This notice may not be removed or altered from any source distribution.
 */

import net.n3.nanoxml.*;
import java.io.*;

public class MyValidator
    extends ValidatorPlugin
{

    public void attributeAdded(String key,
                               String nsPrefix,
                               String nsSystemID,
                               String value,
                               String systemID,
                               int    lineNr)
        throws Exception
    {
        boolean valid = true;

        if (key.equals("id")) {
            if (value.length() < 3) {
                valid = false;
            } else {
                for (int i = 0; i < 3; i++) {
                    char ch = value.charAt(i);

                    if ((ch < 'A') || (ch > 'Z')) {
                        valid = false;
                    }
                }
            }
        }

        if (valid) {
            super.attributeAdded(key, nsPrefix, nsSystemID, value,
                                 systemID, lineNr);
        } else {
            this.invalidAttributeValue(systemID, lineNr, null, key, value);
        }
    }
}