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

  * 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.tags;

 import javax.servlet.jsp.JspException;

 import de.laures.cewolf.DatasetProducer;

 import de.laures.cewolf.taglib.DataAware;

 /** 

  * Tag <producer> which defines a DatasetProducer.

  * @see DataTag

  * @author  Guido Laures 

  */

 public class ProducerTag extends AbstractParameterizedObjectTag {

     private boolean useCache = true;

     public int doEndTag() throws JspException {

         DatasetProducer dataProducer = null;

         try {

             dataProducer = (DatasetProducer) getObject();

             if (dataProducer == null) {

                 throw new JspException("Could not find datasetproducer under ID '" + getId() + "'");

             }

         } catch (ClassCastException cce) {

             throw new JspException(

                 "Bean under ID '"

                     + getId()

                     + "' is of type '"

                     + getObject().getClass().getName()

                     + "'.\nType expected:"

                     + DatasetProducer.class.getName());

         }

         DataAware dw = (DataAware) findAncestorWithClass(this, DataAware.class);

         log.debug("setting data config on " + dw);

         log.debug("useCache = " + useCache);

         addParameter(DatasetProducer.PRODUCER_ATTRIBUTE_NAME, getId());

         dw.setDataProductionConfig(dataProducer, getParameters(), useCache);

         return doAfterEndTag(EVAL_BODY_INCLUDE);

     }

     /**

      * Sets the useCache.

      * @param useCache The useCache to set

      */

     public void setUsecache(boolean useCache) {

         this.useCache = useCache;

     }

 }