contextactionfactoryproxy.java

webwork source

/*
 * WebWork, Web Application Framework
 *
 * Distributable under Apache license.
 * See terms of license at opensource.org
 */
package webwork.action.factory;

import webwork.action.*;
import java.util.Map;

/**
 * Initializes an action for each implemented <code>*Aware</code> interface
 * after first locating the action through the action factory proxy chain.
 *
 * @author Rickard 謆erg ([e-mail])
 * @version $Revision: 1.15 $
 */
public class ContextActionFactoryProxy
   extends ActionFactoryProxy
{
   // Attributes ----------------------------------------------------
   Map applicationMap;

   // Constructors --------------------------------------------------
   public ContextActionFactoryProxy(ActionFactory aFactory)
   {
      super(aFactory);
   }

   // ActionFactory implementation -------------------------------
   public Action getActionImpl(String aName)
      throws Exception
   {
      // Get action from factory
      Action action = getNextFactory().getActionImpl(aName);

      // Give action contextual info
      setActionContext(action);

      // Return action
      return action;
   }

   // Protected -----------------------------------------------------
   /**
    * Initializes the specified action object for each <code>*Aware</code>
    * interface it implements.  The following interfaces are supported and
    * initialized in the this order:
    * <ul>
    *   <li>{@link ServletRequestAware}</li>
    *   <li>{@link ServletResponseAware}</li>
    *   <li>{@link SessionAware}</li>
    *   <li>{@link ApplicationAware}</li>
    *   <li>{@link ParameterAware}</li>
    *   <li>{@link LocaleAware}</li>
    * </ul>
    */
   protected void setActionContext(Object anAction)
   {
      ActionContext context = ActionContext.getContext();

      // Check if servlet aware action
      if (anAction instanceof ServletRequestAware)
      {
         //LogFactory.getLog(this.getClass()).debug("Action is servlet request aware");

         ((ServletRequestAware)anAction).setServletRequest(context.getRequestImpl());
      }

      // Check if servlet aware action
      if (anAction instanceof ServletResponseAware)
      {
         //Category.getInstance(this.getClass()).debug("Action is servlet response aware");

         ((ServletResponseAware)anAction).setServletResponse(context.getResponseImpl());
      }

      // Check if session aware action
      if (anAction instanceof SessionAware)
      {
         //Category.getInstance(this.getClass()).debug("Action is session aware");
         ((SessionAware)anAction).setSession(context.getSessionImpl());
      }

      // Check if application aware action
      if (anAction instanceof ApplicationAware)
      {
         //Category.getInstance(this.getClass()).debug("Action is application aware");
         ((ApplicationAware)anAction).setApplication(context.getApplicationImpl());
      }

      // Check if parameter aware action
      if (anAction instanceof ParameterAware)
      {
         //Category.getInstance(this.getClass()).debug("Action is parameter aware");

         ((ParameterAware)anAction).setParameters(context.getParametersImpl());
      }

      // Check if locale aware action
      if (anAction instanceof LocaleAware)
      {
         //Category.getInstance(this.getClass()).debug("Action is locale aware");

         ((LocaleAware)anAction).setLocale(context.getLocaleImpl());
      }
   }

}