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* 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. *
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package org.apache.james.pop3server.core;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import javax.mail.MessagingException;
import org.apache.james.mailbox.MailboxSession;
import org.apache.james.mailbox.MessageRange;
import org.apache.james.mailbox.MessageResult;
import org.apache.james.mailbox.MessageResult.FetchGroup;
import org.apache.james.mailbox.util.FetchGroupImpl;
import org.apache.james.pop3server.POP3Response;
import org.apache.james.pop3server.POP3Session;
import org.apache.james.protocols.api.CommandHandler;
import org.apache.james.protocols.api.Request;
import org.apache.james.protocols.api.Response;
/**
* Handles RSET command
*/
public class RsetCmdHandler implements CommandHandler<POP3Session> {
private final static String COMMAND_NAME = "RSET";
/**
* Handler method called upon receipt of a RSET command. Calls stat() to
* reset the mailbox.
*
*/
public Response onCommand(POP3Session session, Request request) {
POP3Response response = null;
if (session.getHandlerState() == POP3Session.TRANSACTION) {
stat(session);
response = new POP3Response(POP3Response.OK_RESPONSE);
} else {
response = new POP3Response(POP3Response.ERR_RESPONSE);
}
return response;
}
/**
* Implements a "stat". If the handler is currently in a transaction state,
* this amounts to a rollback of the mailbox contents to the beginning of
* the transaction. This method is also called when first entering the
* transaction state to initialize the handler copies of the user inbox.
*
*/
protected void stat(POP3Session session) {
try {
MailboxSession mailboxSession = (MailboxSession) session.getState().get(POP3Session.MAILBOX_SESSION);
List<Long> uids = new ArrayList<Long>();
Iterator<MessageResult> it = session.getUserMailbox().getMessages(MessageRange.all(), new FetchGroupImpl(FetchGroup.MINIMAL), mailboxSession);
while (it.hasNext()) {
uids.add(it.next().getUid());
}
session.getState().put(POP3Session.UID_LIST, uids);
session.getState().put(POP3Session.DELETED_UID_LIST, new ArrayList<Long>());
} catch (MessagingException e) {
// In the event of an exception being thrown there may or may not be
// anything in userMailbox
session.getLogger().error("Unable to STAT mail box ", e);
}
}
/**
* @see org.apache.james.api.protocol.CommonCommandHandler#getImplCommands()
*/
public Collection<String> getImplCommands() {
List<String> commands = new ArrayList<String>();
commands.add(COMMAND_NAME);
return commands;
}
}