Java tutorial
/* * Copyright (c) 2008-2011, Martijn Brinkers, Djigzo. * * This file is part of Djigzo email encryption. * * Djigzo is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License * version 3, 19 November 2007 as published by the Free Software * Foundation. * * Djigzo is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public * License along with Djigzo. If not, see <http://www.gnu.org/licenses/> * * Additional permission under GNU AGPL version 3 section 7 * * If you modify this Program, or any covered work, by linking or * combining it with aspectjrt.jar, aspectjweaver.jar, tyrex-1.0.3.jar, * freemarker.jar, dom4j.jar, mx4j-jmx.jar, mx4j-tools.jar, * spice-classman-1.0.jar, spice-loggerstore-0.5.jar, spice-salt-0.8.jar, * spice-xmlpolicy-1.0.jar, saaj-api-1.3.jar, saaj-impl-1.3.jar, * wsdl4j-1.6.1.jar (or modified versions of these libraries), * containing parts covered by the terms of Eclipse Public License, * tyrex license, freemarker license, dom4j license, mx4j license, * Spice Software License, Common Development and Distribution License * (CDDL), Common Public License (CPL) the licensors of this Program grant * you additional permission to convey the resulting work. */ package mitm.application.djigzo.james.matchers; import java.util.Collection; import javax.mail.MessagingException; import mitm.application.djigzo.User; import mitm.application.djigzo.UserProperties; import mitm.application.djigzo.james.MessageOriginatorIdentifier; import mitm.application.djigzo.service.SystemServices; import mitm.application.djigzo.workflow.UserWorkflow; import mitm.common.hibernate.DatabaseActionExecutor; import mitm.common.hibernate.DatabaseActionExecutorBuilder; import mitm.common.hibernate.SessionManager; import mitm.common.properties.HierarchicalPropertiesException; import org.apache.commons.lang.text.StrBuilder; import org.apache.mailet.Mail; import org.apache.mailet.MailAddress; /** * Abstract matcher that matches when a user (if sender or receiver depends on the class extending this class) has skip * calendar. The matcher condition determines which user property is checked: * * - skipSMIME : checks the isSMIMESkipCalendar user property * - skipSMIMESigning : checks the isSMIMESkipSigningCalendar user property * - skipSMIMEBoth : checks the isSMIMESkipCalendar and/or isSMIMESkipSigningCalendar user property * * @author Martijn Brinkers * */ public abstract class AbstractIsSkipCalendar extends IsCalendar { private enum SkipParameter { SKIP_SMIME("skipSMIME"), SKIP_SMIME_SIGNING("skipSMIMESigning"), SKIP_SMIME_BOTH("skipSMIMEBoth"); private String name; private SkipParameter(String name) { this.name = name; } public static SkipParameter fromString(String name) { for (SkipParameter parameter : SkipParameter.values()) { if (parameter.name.equals(name)) { return parameter; } } return null; } }; /* * The number of times a database action should be retried when a ConstraintViolation occurs */ private final static int ACTION_RETRIES = 3; /* * manages database sessions */ private SessionManager sessionManager; /* * Used for adding and retrieving users */ private UserWorkflow userWorkflow; /* * Is used to identify the 'sender' (from or enveloped sender or...) of the message */ private MessageOriginatorIdentifier messageOriginatorIdentifier; /* * Used to execute database actions in a transaction */ private DatabaseActionExecutor actionExecutor; private SkipParameter skipParameter; @Override public void init() { getLogger().info("Initializing matcher: " + getMatcherName()); sessionManager = SystemServices.getSessionManager(); userWorkflow = SystemServices.getUserWorkflow(); messageOriginatorIdentifier = SystemServices.getMessageOriginatorIdentifier(); actionExecutor = DatabaseActionExecutorBuilder.createDatabaseActionExecutor(sessionManager); assert (actionExecutor != null); String condition = getCondition(); skipParameter = SkipParameter.fromString(condition); if (skipParameter == null) { throw new IllegalArgumentException(condition + " is not a valid SkipParameter."); } StrBuilder sb = new StrBuilder(); sb.append("Skip Parameter: "); sb.append(skipParameter); getLogger().info(sb.toString()); } protected Collection<MailAddress> getMatchingMailAddresses(final Collection<MailAddress> mailAddresses) throws MessagingException { MailAddressMatcher.HasMatchEventHandler hasMatchEventHandler = new MailAddressMatcher.HasMatchEventHandler() { @Override public boolean hasMatch(final User user) throws MessagingException { return AbstractIsSkipCalendar.this.hasMatch(user); } }; MailAddressMatcher matcher = new MailAddressMatcher(sessionManager, userWorkflow, actionExecutor, hasMatchEventHandler, ACTION_RETRIES); return matcher.getMatchingMailAddresses(mailAddresses); } protected boolean hasMatch(User user) throws MessagingException { /* * Return true if user needs to skip a calendar */ try { UserProperties properties = user.getUserPreferences().getProperties(); switch (skipParameter) { case SKIP_SMIME: return properties.isSMIMESkipCalendar(); case SKIP_SMIME_SIGNING: return properties.isSMIMESkipSigningCalendar(); case SKIP_SMIME_BOTH: return properties.isSMIMESkipCalendar() || properties.isSMIMESkipSigningCalendar(); default: throw new IllegalArgumentException("Unknown skipParameter: " + skipParameter); } } catch (HierarchicalPropertiesException e) { throw new MessagingException("Error in hasMatch.", e); } } protected SessionManager getSessionManager() { return sessionManager; } protected UserWorkflow getUserWorkflow() { return userWorkflow; } protected MessageOriginatorIdentifier getMessageOriginatorIdentifier() { return messageOriginatorIdentifier; } protected DatabaseActionExecutor getActionExecutor() { return actionExecutor; } @Override public abstract Collection<MailAddress> matchMail(Mail mail) throws MessagingException; }