001    /*****************************************************************************
002     * Copyright (C) NanoContainer Organization. All rights reserved.            *
003     * ------------------------------------------------------------------------- *
004     * The software in this package is published under the terms of the BSD      *
005     * style license a copy of which has been included with this distribution in *
006     * the LICENSE.txt file.                                                     *
007     *                                                                           *
008     *****************************************************************************/
009    package org.nanocontainer.nanowar.struts;
010    
011    import org.apache.struts.action.Action;
012    import org.apache.struts.action.ActionMapping;
013    import org.apache.struts.action.ActionServlet;
014    
015    import javax.servlet.http.HttpServletRequest;
016    
017    /**
018     * Uses Pico to produce Actions and inject dependencies into them.  Only use this class if you are using
019     * Struts 1.0.  If you are using Struts 1.1, use {@link PicoRequestProcessor} or {@link PicoTilesRequestProcessor}
020     * instead.
021     *
022     * @author Stephen Molitor
023     * @see ActionFactory
024     * @see PicoRequestProcessor
025     * @see PicoTilesRequestProcessor
026     */
027    public class PicoActionServlet extends ActionServlet {
028    
029        private final ActionFactory actionFactory = new ActionFactory();
030    
031        /**
032         * Creates or retrieves the action instance.  The action is retrieved from the actions
033         * Pico container, using the mapping path as the component key.  If no such action exists,
034         * a new one will be instantiated and placed in the actions container, thus injecting
035         * its dependencies.
036         *
037         * @param mapping the action mapping.
038         * @param request the HTTP request.
039         * @return the action instance.
040         */
041        protected Action processActionCreate(ActionMapping mapping,
042                                             HttpServletRequest request) {
043            return actionFactory.getAction(request, mapping, this);
044        }
045    
046    }