| /**************************************************************** |
| * 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.jsieve.mailet; |
| |
| import org.apache.jsieve.mail.*; |
| import org.apache.jsieve.mail.optional.ActionVacation; |
| import org.apache.mailet.Mail; |
| |
| import javax.mail.MessagingException; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| /** |
| * Dynamically dispatches an Action depending on the type of Action received at runtime. |
| * <h4>Thread Safety</h4> |
| * <p>An instance maybe safe accessed concurrently by multiple threads.</p> |
| */ |
| public class ActionDispatcher { |
| /** |
| * A Map keyed by the type of Action. The values are the methods to invoke to |
| * handle the Action. |
| * <Action, MailAction> |
| */ |
| private ConcurrentMap<Class, MailAction> fieldMailActionMap; |
| |
| /** |
| * Constructor for ActionDispatcher. |
| * |
| * @throws NoSuchMethodException |
| */ |
| public ActionDispatcher() { |
| super(); |
| setMethodMap(defaultMethodMap()); |
| } |
| |
| /** |
| * Method execute executes the passed Action by invoking the method mapped by the |
| * receiver with a parameter of the EXACT type of Action. |
| * |
| * @param anAction not null |
| * @param aMail not null |
| * @param context not null |
| * @throws MessagingException |
| */ |
| public void execute(final Action anAction, final Mail aMail, final ActionContext context) throws MessagingException { |
| final MailAction mailAction = getMethodMap().get(anAction.getClass()); |
| mailAction.execute(anAction, aMail, context); |
| } |
| |
| /** |
| * Returns the methodMap. |
| * |
| * @return Map |
| */ |
| public ConcurrentMap<Class, MailAction> getMethodMap() { |
| return fieldMailActionMap; |
| } |
| |
| /** |
| * Returns a new methodMap. |
| * |
| * @return Map |
| */ |
| private ConcurrentMap<Class, MailAction> defaultMethodMap() { |
| final ConcurrentMap<Class, MailAction> actionMap = new ConcurrentHashMap<Class, MailAction>(4); |
| actionMap.put(ActionFileInto.class, new FileIntoAction()); |
| actionMap.put(ActionKeep.class, new KeepAction()); |
| actionMap.put(ActionRedirect.class, new RedirectAction()); |
| actionMap.put(ActionReject.class, new RejectAction()); |
| actionMap.put(ActionVacation.class, new VacationAction()); |
| return actionMap; |
| } |
| |
| /** |
| * Sets the mail action mail. |
| * |
| * @param mailActionMap <Action, MailAction> not null |
| */ |
| protected void setMethodMap(ConcurrentMap<Class, MailAction> mailActionMap) { |
| fieldMailActionMap = mailActionMap; |
| } |
| } |