Java tutorial
/**************************************************************** * 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.hupa.server.handler; import javax.mail.Folder; import javax.servlet.http.HttpSession; import net.customware.gwt.dispatch.server.ExecutionContext; import net.customware.gwt.dispatch.shared.ActionException; import org.apache.commons.logging.Log; import org.apache.hupa.server.IMAPStoreCache; import org.apache.hupa.shared.data.IMAPFolder; import org.apache.hupa.shared.data.User; import org.apache.hupa.shared.rpc.DeleteFolder; import org.apache.hupa.shared.rpc.GenericResult; import com.google.inject.Inject; import com.google.inject.Provider; import com.sun.mail.imap.IMAPStore; /** * Handle delete requests for a folder * * */ public class DeleteFolderHandler extends AbstractSessionHandler<DeleteFolder, GenericResult> { @Inject public DeleteFolderHandler(IMAPStoreCache cache, Log logger, Provider<HttpSession> sessionProvider) { super(cache, logger, sessionProvider); } @Override protected GenericResult executeInternal(DeleteFolder action, ExecutionContext context) throws ActionException { User user = getUser(); IMAPFolder folder = action.getFolder(); try { IMAPStore store = cache.get(user); Folder f = store.getFolder(folder.getFullName()); // close the folder if its open if (f.isOpen()) { f.close(false); } // recursive delete the folder if (f.delete(true)) { logger.info("Successfully delete folder " + folder + " for user " + user); return new GenericResult(); } else { throw new ActionException("Unable to delete folder " + folder + " for user " + user); } } catch (Exception e) { logger.error("Error while deleting folder " + folder + " for user " + user, e); throw new ActionException("Error while deleting folder " + folder + " for user " + user, e); } } /* * (non-Javadoc) * @see net.customware.gwt.dispatch.server.ActionHandler#getActionType() */ public Class<DeleteFolder> getActionType() { return DeleteFolder.class; } }