| /* |
| * 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 com.opensymphony.xwork2; |
| |
| import com.opensymphony.xwork2.config.entities.ActionConfig; |
| import org.apache.struts2.StrutsException; |
| |
| /** |
| * Handles cases when the result or action is unknown. |
| * |
| * <p> |
| * This allows other classes like Struts plugins to provide intelligent defaults easier. |
| * </p> |
| */ |
| public interface UnknownHandler { |
| |
| /** |
| * Handles the case when an action configuration is unknown. Implementations can return a new ActionConfig |
| * to be used to process the request. |
| * |
| * @param namespace The namespace |
| * @param actionName The action name |
| * @return An generated ActionConfig, can return <tt>null</tt> |
| * @throws StrutsException in case of errors |
| */ |
| ActionConfig handleUnknownAction(String namespace, String actionName) throws StrutsException; |
| |
| /** |
| * Handles the case when a result cannot be found for an action and result code. |
| * |
| * @param actionContext The action context |
| * @param actionName The action name |
| * @param actionConfig The action config |
| * @param resultCode The returned result code |
| * @return A result to be executed, can return <tt>null</tt> |
| * @throws StrutsException in case of errors |
| */ |
| Result handleUnknownResult(ActionContext actionContext, String actionName, ActionConfig actionConfig, String resultCode) throws StrutsException; |
| |
| /** |
| * Handles the case when an action method cannot be found. This method is responsible both for finding the method and executing it. |
| * |
| * @since 2.1 |
| * @param action The action object |
| * @param methodName The method name to call |
| * @return The result returned from invoking the action method, can return <tt>null</tt> if this instance cannot |
| * handle such methodName to allow other handlers give a chance |
| */ |
| Object handleUnknownActionMethod(Object action, String methodName); |
| |
| } |