/**
* Copyright (C) 2001-3, Anthony Harrison anh23@pitt.edu This library 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 library 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 library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.jactr.core.utils;
import java.util.Collection;
/**
* interface for an object that can carry arbitrary transient (not persisted to
* file) data - Chunks permit this for internal bookkeeping
*
* @author harrison
* @created December 6, 2002
*/
public interface IMetaContainer
{
/**
* Gets the MetaData attribute of the MetaContainer object
*
* @param key
* Description of Parameter
* @return The MetaData value
* @since
*/
public Object getMetaData(String key);
/**
* Sets the MetaData attribute of the MetaContainer object
*
* @param key
* The new MetaData value
* @param value
* The new MetaData value
* @since
*/
public void setMetaData(String key, Object value);
/**
* return all the keys
*
* @return
*/
public Collection<String> getMetaDataKeys();
}