/**
    * Redistribution and use of this software and associated documentation
    * ("Software"), with or without modification, are permitted provided
    * that the following conditions are met:
    *
    * 1. Redistributions of source code must retain copyright
    *    statements and notices.  Redistributions must also contain a
    *    copy of this document.
    *
   * 2. Redistributions in binary form must reproduce the
   *    above copyright notice, this list of conditions and the
   *    following disclaimer in the documentation and/or other
   *    materials provided with the distribution.
   *
   * 3. The name "Exolab" must not be used to endorse or promote
   *    products derived from this Software without prior written
   *    permission of Intalio, Inc.  For written permission,
   *    please contact info@exolab.org.
   *
   * 4. Products derived from this Software may not be called "Exolab"
   *    nor may "Exolab" appear in their names without prior written
   *    permission of Intalio, Inc. Exolab is a registered
   *    trademark of Intalio, Inc.
   *
   * 5. Due credit should be given to the Exolab Project
   *    (http://www.exolab.org/).
   *
   * THIS SOFTWARE IS PROVIDED BY INTALIO, INC. AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
   * INTALIO, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * Copyright 1999 (C) Intalio, Inc. All Rights Reserved.
   *
   * $Id$
   */
  
  package org.exolab.castor.dsml.jndi;
  
  import java.util.Enumeration;
  import java.util.Vector;
  import org.xml.sax.SAXException;
  import org.xml.sax.AttributeList;
  import org.xml.sax.HandlerBase;
  import javax.naming.directory.Attribute;
  import javax.naming.directory.Attributes;
  import javax.naming.directory.BasicAttribute;
  import javax.naming.directory.BasicAttributes;
  import javax.naming.directory.SearchResult;
  
  import org.castor.core.util.Base64Decoder;
  import org.castor.core.util.Messages;
  import org.exolab.castor.dsml.XML;
  
  /**
   * @author <a href="mailto:arkin@intalio.com">Assaf Arkin</a>
   * @version $Revision$ $Date: 2006-04-10 16:39:24 -0600 (Mon, 10 Apr 2006) $
   */
  class JNDIEntryConsumer extends HandlerBase {
      private String _entryDN;
      private Attributes _attrSet;
      private Attribute _attr;
      private StringBuffer _value;
      private Base64Decoder _decoder;
      private Vector<SearchResult> _entries = new Vector<SearchResult>();
  
      JNDIEntryConsumer() {
      }
  
      public Enumeration<SearchResult> getSearchResults() {
          return _entries.elements();
      }
  
      public void startElement(final String tagName, final AttributeList attr) throws SAXException {
          if (tagName.equals(XML.Entries.ELEMENT)) {
              // Do nothing
          } else if (tagName.equals(XML.Entries.Elements.ENTRY)) {
              if (_attrSet != null) {
                  throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
              }
              _attrSet = new BasicAttributes();
              _entryDN = attr.getValue(XML.Entries.Attributes.DN);
          } else if (tagName.equals(XML.Entries.Elements.OBJECT_CLASS)) {
              if (_attrSet == null || _attr != null) {
                  throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
              }
              _attr = new BasicAttribute("objectclass");
          } else if (tagName.equals(XML.Entries.Elements.ATTRIBUTE)) {
              if (_attrSet == null || _attr != null) {
                  throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
              }
             _attr = new BasicAttribute(attr.getValue(XML.Entries.Attributes.NAME));
         } else if (tagName.equals(XML.Entries.Elements.VALUE)
                 || tagName.equals(XML.Entries.Elements.OBJECT_CLASS_VALUE)) {
             if (_attrSet == null || _attr == null || _value != null) {
                 throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
             }
             if (XML.Entries.Attributes.Encodings.BASE64.equals(
                     attr.getValue(XML.Entries.Attributes.ENCODING))) {
                 _decoder = new Base64Decoder();
             } else {
                 _value = new StringBuffer();
             }
         } else {
             throw new SAXException(Messages.format("dsml.openingTagNotRecognized", tagName));
         }
     }
 
     public void endElement(final String tagName) throws SAXException {
         if (tagName.equals(XML.Entries.ELEMENT)) {
             if (_attrSet != null) {
                 throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
             }
         } else if (tagName.equals(XML.Entries.Elements.ENTRY)) {
             if (_attrSet == null || _attr != null) {
                 throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
             }
             _entries.addElement(new SearchResult(_entryDN, null, _attrSet));
             _entryDN = null;
             _attrSet = null;
         } else if (tagName.equals(XML.Entries.Elements.OBJECT_CLASS)
                 || tagName.equals(XML.Entries.Elements.ATTRIBUTE)) {
             if (_attrSet == null || _attr == null || _value != null) {
                 throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
             }
             _attrSet.put(_attr);
             _attr = null;
         } else if (tagName.equals(XML.Entries.Elements.VALUE)
                 || tagName.equals(XML.Entries.Elements.OBJECT_CLASS_VALUE)) {
             if (_attrSet == null || _attr == null || (_value == null && _decoder == null)) {
                 throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
             }
             if (_decoder != null) {
                 _attr.add(_decoder.getByteArray());
                 _decoder = null;
             } else {
                 _attr.add(_value.toString());
                 _value = null;
             }
         } else {
             throw new SAXException(Messages.format("dsml.closingTagNotRecognized", tagName));
         }
     }
 
     public void characters(final char[] chars, final int offset, final int length) {
         if (_decoder != null) {
             _decoder.translate(new String(chars, offset, length));
         } else if (_value != null) {
             _value.append(chars, offset, length);
         }
     }
 }