/* ================================================================

  * Cewolf : Chart enabling Web Objects Framework

  * ================================================================

  *

  * Project Info:  http://cewolf.sourceforge.net

  * Project Lead:  Guido Laures (guido@laures.de);

  *

  * (C) Copyright 2002, by Guido Laures

  *

  * 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 de.laures.cewolf.taglib.util;

 import java.util.Date;

 import java.util.Hashtable;

 import java.util.Iterator;

 import java.util.Map;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 /**

  * @author glaures

  */

 public class DatasetProductionTimeStore extends Hashtable {

     private static final DatasetProductionTimeStore instance = new DatasetProductionTimeStore();

     private static final Log log = LogFactory.getLog(DatasetProductionTimeStore.class);

     public static final DatasetProductionTimeStore getInstance() {

         return instance;

     }

     private DatasetProductionTimeStore() {

     }

     public boolean containsEntry(String producerId, Map params) {

         return containsKey(new DatasetProductionTimesKey(producerId, params));

     }

     public void addEntry(String producerId, Map params, Date produceTime) {

       log.debug("add entry: " + producerId);

         put(new DatasetProductionTimesKey(producerId, params), produceTime);

     }

     public void removeEntry(String producerId, Map params) {

       log.debug("remove entry: " + producerId);

         remove(new DatasetProductionTimesKey(producerId, params));

     }

     public Date getProductionTime(String producerId, Map params) {

         return (Date) get(new DatasetProductionTimesKey(producerId, params));

     }

     public String paramsToString(Map params){

     	Iterator it = params.keySet().iterator();

     	StringBuffer buf = new StringBuffer("[");

     	while(it.hasNext()){

     		String key = (String)it.next();

     		buf.append(key + ":" + params.get(key));

     	}

     	buf.append("]");

     	return buf.toString();

     }

 }