/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2001 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program 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 General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

package de.ilias.services.object;

import java.io.File;
import java.io.IOException;
import java.sql.ResultSet;

import de.ilias.services.lucene.index.CommandQueueElement;
import de.ilias.services.lucene.index.DocumentHandlerException;
import de.ilias.services.lucene.index.file.ExtensionFileHandler;
import de.ilias.services.lucene.index.file.FileHandlerException;
import de.ilias.services.lucene.index.file.path.PathCreator;
import de.ilias.services.lucene.index.file.path.PathCreatorException;



/**
 * 
 *
 * @author Stefan Meyer <smeyer.ilias@gmx.de>
 * @version $Id$
 */
public class FileDataSource extends DataSource {

	private PathCreator pathCreator = null;
	
	/**
	 * @param type
	 */
	public FileDataSource(int type) {

		super(type);
	}

	/**
	 * @see de.ilias.services.lucene.index.DocumentHandler#writeDocument(de.ilias.services.lucene.index.CommandQueueElement, java.sql.ResultSet)
	 */
	public void writeDocument(CommandQueueElement el, ResultSet res)
			throws DocumentHandlerException {

		File file = null;
		ExtensionFileHandler handler = new ExtensionFileHandler();
		
		try {
			if(getPathCreator() == null) {
				logger.info("No path creator defined");
				return;
			}
			file = getPathCreator().buildFile(el, res);
			
			// Analyze encoding (transfer encoding), parse file extension and finally read content
			for(Object field : getFields()) {
				((FieldDefinition) field).writeDocument(handler.getContent(file));
			}
			logger.debug("File path is: " + file.getAbsolutePath());
			return;
		}
		catch (PathCreatorException e) {
			if(file != null)
				logger.info("Current Files is: " + file.getAbsolutePath());
			throw new DocumentHandlerException(e);
		} 
		catch (FileHandlerException e) {
			if(file != null)
				logger.info("Current Files is: " + file.getAbsolutePath());
			throw new DocumentHandlerException(e);
		}
	}

	/**
	 * @param pathCreator the pathCreator to set
	 */
	public void setPathCreator(PathCreator pathCreator) {
		this.pathCreator = pathCreator;
	}

	/**
	 * @return the pathCreator
	 */
	public PathCreator getPathCreator() {
		return pathCreator;
	}

	/**
	 * @see de.ilias.services.object.DataSource#writeDocument(de.ilias.services.lucene.index.CommandQueueElement)
	 */
	@Override
	public void writeDocument(CommandQueueElement el)
			throws DocumentHandlerException, IOException {

		writeDocument(el, null);
	}
}