001/**
002 * Copyright (c) 2010 The Regents of the University of California.
003 * All rights reserved.
004 *
005 * '$Author: tao $'
006 * '$Date: 2010-06-03 16:45:10 -0700 (Thu, 03 Jun 2010) $' 
007 * '$Revision: 24730 $'
008 * 
009 * Permission is hereby granted, without written agreement and without
010 * license or royalty fees, to use, copy, modify, and distribute this
011 * software and its documentation for any purpose, provided that the above
012 * copyright notice and the following two paragraphs appear in all copies
013 * of this software.
014 *
015 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
016 * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
017 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
018 * THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
019 * SUCH DAMAGE.
020 *
021 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
022 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
023 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
024 * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
025 * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
026 * ENHANCEMENTS, OR MODIFICATIONS.
027 *
028 */
029package org.kepler.workflowscheduler.gui;
030
031import java.util.Vector;
032
033import org.apache.commons.logging.Log;
034import org.apache.commons.logging.LogFactory;
035import org.xml.sax.Attributes;
036import org.xml.sax.SAXException;
037import org.xml.sax.helpers.DefaultHandler;
038
039/**
040 * A parser which parses the result xml from remote scheduler server to
041 * get available time zone ids.
042 * @author tao
043 *
044 */
045public class ServerTimeZoneIDParser extends DefaultHandler 
046{ 
047  private static final Log log = LogFactory.getLog(ServerTimeZoneIDParser.class.getName());
048  private static final String ID = "id";
049  private static final String AVAILABLETIMEZONEIDS = "availableTimeZoneIDs";
050  private StringBuffer textBuffer = null;
051  private Vector<String> availableTimeZoneIDs = null;
052  
053  /**
054   * Constructor
055   */
056  public ServerTimeZoneIDParser()
057  {
058    availableTimeZoneIDs = new Vector<String>();
059  }
060  
061  /** SAX Handler that is called at the start of each XML element */
062  public void startElement(String uri, String localName, String qName,
063          Attributes atts) throws SAXException
064  {
065    
066    textBuffer = null;
067    textBuffer = new StringBuffer();
068  }
069  
070  /** SAX Handler that is called for each XML text node */
071  public void characters(char[] cbuf, int start, int len) throws SAXException
072  {
073    textBuffer.append(new String(cbuf, start, len));
074  }
075  
076  /** SAX Handler that is called at the end of each XML element */
077  public void endElement(String uri, String localName, String qName)
078          throws SAXException
079  {
080    
081    String nodeValue = textBuffer.toString().trim();
082    //System.out.println("the node value");
083    //status
084    if(localName != null && localName.equals(ID) )
085    {
086      if(nodeValue != null && !nodeValue.equals(""))
087      {
088        //System.out.println("add the id "+nodeValue);
089        availableTimeZoneIDs.add(nodeValue);
090      }  
091    }
092    textBuffer = null;
093    textBuffer = new StringBuffer();
094  }
095  
096  /**
097   * Get the ids from the server response
098   * @return
099   */
100  public Vector<String> getValaibleTimeZoneIDs()
101  {
102    return availableTimeZoneIDs;
103  }
104
105}