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 * Licensed to the Apache Software Foundation (ASF) under one   *
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 * distributed with this work for additional information        *
 * regarding copyright ownership.  The ASF licenses this file   *
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package org.apache.james.transport.matchers;

import java.util.Collection;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;

import org.apache.james.core.MailAddress;
import org.apache.mailet.Mail;
import org.apache.mailet.base.GenericMatcher;

/**
 * Matches mail where the subject starts with a given phrase.
 * @version 1.0.0, 1/5/2000
 */
public class SubjectStartsWith extends GenericMatcher {

    @Override
    public Collection<MailAddress> match(Mail mail) throws MessagingException {
        MimeMessage mm = mail.getMessage();
        String subject = mm.getSubject();
        if (subject != null && subject.startsWith(getCondition())) {
            return mail.getRecipients();
        }
        return null;
    }
}
