/*
* $Id: FormatFactory.java,v 1.1 2005/05/25 19:56:30 ahmed Exp $
*
* 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 jaligner.formats;
import java.util.Collection;
import java.util.HashMap;
/**
* Formats factory.
*
* @author Ahmed Moustafa (ahmed@users.sf.net)
*/
public class FormatFactory {
/**
* Instance of {@link FormatFactory}
*/
private static FormatFactory instance = null;
/**
* {@link HashMap} of {@link Format}
*/
private HashMap formats = new HashMap();
/**
* Hidden constructor
*
*/
private FormatFactory ( ) {
super();
}
/**
* Returns an instance for {@link FormatFactory}.
* @return {@link FormatFactory}
*/
public static FormatFactory getInstance() {
if (instance == null) {
instance = new FormatFactory();
}
return instance;
}
/**
* Registers format.
* @param format instance of format
*/
public void registerFormat(Format format) {
formats.put(format.getId(), format);
}
/**
* Returns an instance of {@link Format}.
* @param id format id
* @return {@link Format} or null if id not found
*/
public Format getFormat(String id) {
return (Format) formats.get(id);
}
/**
* Returns a list of registered formats
* @return {@link Collection}
*/
public Collection getFormats( ) {
return formats.keySet();
}
}