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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   *
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 *   http://www.apache.org/licenses/LICENSE-2.0                 *
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 * 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    *
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package org.apache.james.transport.matchers;

import org.apache.mailet.GenericMatcher;
import org.apache.mailet.Mail;
import org.apache.mailet.MailAddress;

import java.util.Collection;
import java.util.StringTokenizer;

/**
 * @version 1.0.0, 24/04/1999
 */
public class SenderIs extends GenericMatcher {

    private Collection senders;

    public void init() throws javax.mail.MessagingException {
        StringTokenizer st = new StringTokenizer(getCondition(), ", \t", false);
        senders = new java.util.HashSet();
        while (st.hasMoreTokens()) {
            senders.add(new MailAddress(st.nextToken()));
        }
    }

    public Collection match(Mail mail) {
        if (senders.contains(mail.getSender())) {
            return mail.getRecipients();
        } else {
            return null;
        }
    }
}