DeleteTemplateListener.java

/**********************************************************************************
 * $URL: https://source.sakaiproject.org/svn/sam/trunk/samigo-app/src/java/org/sakaiproject/tool/assessment/ui/listener/author/DeleteTemplateListener.java $
 * $Id: DeleteTemplateListener.java 106463 2012-04-02 12:20:09Z david.horwitz@uct.ac.za $
 ***********************************************************************************
 *
 * Copyright (c) 2004, 2005, 2006, 2008, 2009 The Sakai Foundation
 *
 * Licensed under the Educational Community License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.opensource.org/licenses/ECL-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 **********************************************************************************/



package org.sakaiproject.tool.assessment.ui.listener.author;

import java.util.List;

import org.sakaiproject.tool.assessment.data.dao.assessment.AssessmentTemplateData;
import org.sakaiproject.tool.assessment.facade.AssessmentTemplateFacade;
import org.sakaiproject.tool.assessment.ui.listener.author.TemplateListener;

import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.ActionEvent;
import javax.faces.event.ActionListener;

import org.sakaiproject.tool.assessment.services.assessment.AssessmentService;


/**
 * <p>Description: Action Listener for deletion of template.</p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Organization: Sakai Project</p>
 * @author Ed Smiley
 * @version $Id: DeleteTemplateListener.java 106463 2012-04-02 12:20:09Z david.horwitz@uct.ac.za $
 */

public class DeleteTemplateListener extends TemplateBaseListener implements ActionListener
{
  //boolean isTemplate = true;
  //private static Log log = LogFactory.getLog(DeleteTemplateListener.class);

  public void processAction(ActionEvent ae) throws AbortProcessingException
  {
    FacesContext context = FacesContext.getCurrentInstance();

    //log.info("DELETE TEMPLATE LISTENER.");
//    log.info("debugging ActionEvent: " + ae);
//    log.info("debug requestParams: " + requestParams);
//    log.info("debug reqMap: " + reqMap);
    String deleteId = this.lookupTemplateBean(context).getIdString();
    if(!deleteTemplate(deleteId))
    {
      // todo: define package specific RuntimeException
      throw new RuntimeException("Cannot delete template.");
    }
    // reset template list
    TemplateListener lis = new TemplateListener();
    lis.processAction(null); 
  }

  /**
   * This deletes a template with all its associated parts, items, etc..
   *
   * @param session DOCUMENTATION PENDING
   *
   * @return DOCUMENTATION PENDING
   */
  public boolean deleteTemplate(String deleteId)
  {
    //log.info("deleteTemplate (" + deleteId + ")");

    try
    {
      AssessmentService delegate = new AssessmentService();
      //rules: if the template has been used by assessment, we set
      // its status = 0 (inactive) instead of removing it from the DB
      List l = delegate.getAssessmentByTemplate(deleteId);
      if (l.size()==0){ // save to delete
        delegate.deleteAssessmentTemplate(new Long(deleteId));
      }
      else{ // set status to "0"
	AssessmentTemplateFacade t = delegate.getAssessmentTemplate(deleteId);
        t.setStatus(AssessmentTemplateFacade.INACTIVE_STATUS);
        delegate.save((AssessmentTemplateData)t.getData());
      }
      return true;
    }
    catch(Exception e)
    {
      e.printStackTrace();

      return false;
    }
  }

}