package org.dbxml.core.corba;

/*
 * dbXML License, Version 1.0
 *
 *
 * Copyright (c) 1999-2001 The dbXML Group, L.L.C.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 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 end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by
 *        The dbXML Group (http://www.dbxml.com/)."
 *    Alternately, this acknowledgment may appear in the software
 *    itself, if and wherever such third-party acknowledgments normally
 *    appear.
 *
 * 4. The names "dbXML" and "The dbXML Group" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    info@dbxml.com.
 *
 * 5. Products derived from this software may not be called "dbXML",
 *    nor may "dbXML" appear in their name, without prior written
 *    permission of The dbXML Group.
 *
 * THIS SOFTWARE IS PROVIDED ``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 THE DBXML GROUP 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.
 *
 * $Id: EncodedBufferConverter.java,v 1.31 2001/05/29 03:58:01 tom Exp $
 */

import org.dbxml.xml.*;
import org.dbxml.xml.dom.*;
import org.dbxml.core.corba.db.*;
import org.dbxml.core.data.*;
import org.dbxml.server.*;

import org.w3c.dom.*;

import java.io.*;

/**
 * Converts an EncodedBuffer into a Configuration object.
 */
public class EncodedBufferConverter {
   private static final byte[] EmptyBytes = new byte[0];
   
   /**
     * Converts an EncodedBuffer into a Configuration object. Assumes the
     * buffer contains valid XML data.
     *
     * @param buffer the buffer containing XML to convert
     * @return A Configuration object encapsualting the XML.
     */
   public static Configuration convertToConfiguration(EncodedBuffer buffer) {
      Configuration config = null;

      Document doc = getDocument(buffer);
      config = new Configuration(doc.getDocumentElement(), false);

      return config;
   }

   /**
     * Converts an EncodedBuffer into a Document object. Assumes the
     * buffer contains valid XML data.
     *
     * @param buffer the buffer containing XML to convert
     * @return A Document object encapsualting the XML.
     */
   public static Document convertToDocument(EncodedBuffer buffer) {
      return getDocument(buffer);
   }

   /**
     * Converts a Document object into an EncodedBuffer.
     *
     * @param doc the Node to convert to an EncodedBuffer
     * @param encoding the encoding to use when converting the doc
     * @return An EncodedBuffer containing the serialized document
     */
   public static EncodedBuffer convertFromDocument(Node node) {
      EncodedBuffer result = new EncodedBuffer();
      result.sym = EmptyBytes;
      result.buf = TextWriter.toString(node).getBytes();
      result.stamp = -1;
      return result;
   }

   /**
      * Parses the buffer into a Document.
      */
   private static Document getDocument(EncodedBuffer buffer) {
      String buf = new String(buffer.buf);

      try {
         // Parse the buffer
         return DOMParser.toDocument(buf);
      }
      catch ( Exception e ) {
         //org.dbxml.Debug.println("Error Converting Buffer '" + buf + "'");
         return null;
      }
   }

   /*
    * Releases all resources associated with this object
    */
   public void remove() {
   }
}




