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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 *
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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 STAT command
*/
public class StatCmdHandler implements CommandHandler<POP3Session> {
private final static String COMMAND_NAME = "STAT";
/**
* Handler method called upon receipt of a STAT command. Returns the number
* of messages in the mailbox and its aggregate size.
*
*/
public Response onCommand(POP3Session session, Request request) {
POP3Response response = null;
if (session.getHandlerState() == POP3Session.TRANSACTION) {
try {
List<Long> uidList = (List<Long>) session.getState().get(POP3Session.UID_LIST);
List<Long> deletedUidList = (List<Long>) session.getState().get(POP3Session.DELETED_UID_LIST);
long size = 0;
int count = 0;
if (uidList.isEmpty() == false) {
MailboxSession mailboxSession = (MailboxSession) session.getState().get(POP3Session.MAILBOX_SESSION);
Iterator<MessageResult> results = session.getUserMailbox().getMessages(MessageRange.range(uidList.get(0), uidList.get(uidList.size() - 1)), new FetchGroupImpl(FetchGroup.MINIMAL), mailboxSession);
List<MessageResult> validResults = new ArrayList<MessageResult>();
while (results.hasNext()) {
MessageResult result = results.next();
if (deletedUidList.contains(result.getUid()) == false) {
size += result.getSize();
count++;
validResults.add(result);
}
}
}
StringBuilder responseBuffer = new StringBuilder(32).append(count).append(" ").append(size);
response = new POP3Response(POP3Response.OK_RESPONSE, responseBuffer.toString());
} catch (MessagingException me) {
response = new POP3Response(POP3Response.ERR_RESPONSE);
}
} else {
response = new POP3Response(POP3Response.ERR_RESPONSE);
}
return response;
}
/**
* @see org.apache.james.api.protocol.CommonCommandHandler#getImplCommands()
*/
public Collection<String> getImplCommands() {
List<String> commands = new ArrayList<String>();
commands.add(COMMAND_NAME);
return commands;
}
}