/*
 * IronJacamar, a Java EE Connector Architecture implementation
 * Copyright 2011, Red Hat Inc, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.jca.as.converters;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.xml.sax.InputSource;

/**
 * DataSourceConverter
 * 
 * @author Jeff Zhang
 * @version $Revision: $
 */
public class DataSourceConverter
{

   /**
    * DataSourceConverter constructor
    */
   public DataSourceConverter()
   {
   }

   /**
    * convert 
    * @param in inputStream
    * @param out outputStream
    * @throws Exception exception
    */
   public void convert(InputStream in, OutputStream out) throws Exception
   {
      LegacyDsParser parser = new LegacyDsParser();
      DataSources ds = parser.parse(in);
      if (ds == null)
         return;

      DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
      DocumentBuilder db = dbf.newDocumentBuilder();
      Document doc = db.parse(new InputSource(new StringReader(ds.toString())));

      TransformerFactory tfactory = TransformerFactory.newInstance();
      Transformer serializer;

      serializer = tfactory.newTransformer();
      //Setup indenting to "pretty print"
      serializer.setOutputProperty(OutputKeys.INDENT, "yes");
      serializer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

      serializer.transform(new DOMSource(doc), new StreamResult(out));

   }
}
