/**
 * 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: JNDIEntryConsumer.java 8145 2009-03-29 22:07:00Z rjoachim $
 */

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: 8145 $ $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);
        }
    }
}
