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Posted to jetspeed-dev@portals.apache.org by ra...@apache.org on 2001/06/09 17:35:39 UTC

cvs commit: jakarta-jetspeed/src/java/org/apache/jetspeed/modules/actions/controllers VelocityControllerAction.java

raphael     01/06/09 08:35:39

  Added:       src/java/org/apache/jetspeed/modules/actions/controllers
                        VelocityControllerAction.java
  Log:
  add a velocitycontroller implementation
  
  Revision  Changes    Path
  1.1                  jakarta-jetspeed/src/java/org/apache/jetspeed/modules/actions/controllers/VelocityControllerAction.java
  
  Index: VelocityControllerAction.java
  ===================================================================
  /* ====================================================================
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution,
   *    if any, must include the following acknowledgment:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowledgment may appear in the software itself,
   *    if and wherever such third-party acknowledgments normally appear.
   *
   * 4. The names "Apache" and "Apache Software Foundation" and
   *     "Apache Jetspeed" must not be used to endorse or promote products
   *    derived from this software without prior written permission. For
   *    written permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache" or
   *    "Apache Jetspeed", nor may "Apache" appear in their name, without
   *    prior written permission of the Apache Software Foundation.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   */
   
  package org.apache.jetspeed.modules.actions.controllers;
  
  import org.apache.jetspeed.portal.PortletController;
  
  // Turbine stuff
  import org.apache.turbine.util.Log;
  import org.apache.turbine.util.RunData;
  import org.apache.turbine.modules.Action;
  import org.apache.turbine.modules.actions.VelocityAction;
  
  // Velocity Stuff
  import org.apache.velocity.context.Context;
  
  
  /**
   * An abstract action class to build VelocityPortlet actions.
   * 
   * <p>Don't call it from the URL, the Portlet and the Action are automatically
   * associated through the registry PortletName
   * 
   * @author <a href="mailto:raphael@apache.org">Rapha�l Luta</a>
   * @author <a href="mailto:re_carrasco@bco011.sonda.cl">Roberto Carrasco</a>
   */
  public abstract class VelocityControllerAction extends VelocityAction
  {
  
      /**
       * This overrides the default Action.perform() to execute the
       * doEvent() method.  If that fails, then it will execute the
       * doPerform() method instead.
       *
       * @param data A Turbine RunData object.
       * @exception Exception, a generic exception.
       */
      protected void perform( RunData rundata )
          throws Exception
      {
          try
          {
              // first try to see if there are some events registered for this
              // action...
              executeEvents(rundata, getContext(rundata) );
          }
          catch (NoSuchMethodException e)
          {
              // no event selected
              doPerform(rundata);
          }
      }
  
      /**
       * This method is used when you want to short circuit an Action
       * and change the template that will be executed next.
       *
       * @param data Turbine information.
       * @param template The template that will be executed next.
       */
      public void setTemplate(RunData data,
                              String template)
      {
          getContext(data).put( "template" , template );
      }
  
      /**
       * Return the Context needed by Velocity.
       *
       * @param RunData data
       * @return Context, a context for web pages.
       */
      protected Context getContext(RunData data)
      {
          return (Context)data.getTemplateInfo()
                              .getTemplateContext( "VelocityControllerContext" );
      }
  
      public void doPerform( RunData rundata, Context context )
      {
          PortletController controller = (PortletController)context.get( "controller" );
  
          buildNormalContext( controller, context, rundata);
      }
  
      /** 
       * Subclasses must override this method to provide default behavior 
       * for the portlet action
       */
      protected abstract void buildNormalContext( PortletController controller, 
                                                  Context context,
                                                  RunData rundata );
  
  }
  
  
  

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