| /* |
| * $Id$ |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache 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.apache.org/licenses/LICENSE-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.apache.struts.chain.commands; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.struts.chain.contexts.ActionContext; |
| import org.apache.struts.config.ActionConfig; |
| import org.apache.struts.config.ForwardConfig; |
| import org.apache.struts.config.ModuleConfig; |
| |
| /** |
| * <p>Select and cache the <code>ActionForward</code> for this |
| * <code>ActionConfig</code> if specified.</p> |
| * |
| * @version $Rev$ $Date: 2005-06-04 10:58:46 -0400 (Sat, 04 Jun 2005) |
| * $ |
| */ |
| public abstract class AbstractSelectForward extends ActionCommandBase { |
| // ------------------------------------------------------ Instance Variables |
| |
| /** |
| * <p> Provide Commons Logging instance for this class. </p> |
| */ |
| private static final Log LOG = |
| LogFactory.getLog(AbstractSelectForward.class); |
| |
| // ---------------------------------------------------------- Public Methods |
| |
| /** |
| * <p>Select and cache the <code>ActionForward</code> for this |
| * <code>ActionConfig</code> if specified.</p> |
| * |
| * @param actionCtx The <code>Context</code> for the current request |
| * @return <code>false</code> so that processing continues |
| * @throws Exception if thrown by the Action class |
| */ |
| public boolean execute(ActionContext actionCtx) |
| throws Exception { |
| // Skip processing if the current request is not valid |
| Boolean valid = actionCtx.getFormValid(); |
| |
| if ((valid == null) || !valid.booleanValue()) { |
| return CONTINUE_PROCESSING; |
| } |
| |
| // Acquire configuration objects that we need |
| ActionConfig actionConfig = actionCtx.getActionConfig(); |
| ModuleConfig moduleConfig = actionConfig.getModuleConfig(); |
| |
| ForwardConfig forwardConfig = null; |
| String forward = actionConfig.getForward(); |
| |
| if (forward != null) { |
| forwardConfig = forward(actionCtx, moduleConfig, forward); |
| |
| if (LOG.isDebugEnabled()) { |
| LOG.debug("Forwarding to " + forwardConfig); |
| } |
| |
| actionCtx.setForwardConfig(forwardConfig); |
| } |
| |
| return CONTINUE_PROCESSING; |
| } |
| |
| // ------------------------------------------------------- Protected Methods |
| |
| /** |
| * <p>Create and return a <code>ForwardConfig</code> representing the |
| * specified module-relative destination.</p> |
| * |
| * @param context The context for this request |
| * @param moduleConfig The <code>ModuleConfig</code> for this request |
| * @param uri The module-relative URI to be the destination |
| * @return ForwwardConfig representing the destination |
| */ |
| protected abstract ForwardConfig forward(ActionContext context, |
| ModuleConfig moduleConfig, String uri); |
| } |