/*
 * 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 javax.mail;

/**
 * @version $Rev$ $Date$
 */
public interface UIDFolder {
    /**
     * A special value than can be passed as the <code>end</code> parameter to
     * {@link Folder#getMessages(int, int)} to indicate the last message in this folder.
     */
    public static final long LASTUID = -1;

    public abstract long getUIDValidity() throws MessagingException;

    public abstract Message getMessageByUID(long uid)
            throws MessagingException;

    public abstract Message[] getMessagesByUID(long start, long end)
            throws MessagingException;

    public abstract Message[] getMessagesByUID(long[] ids)
            throws MessagingException;

    public abstract long getUID(Message message) throws MessagingException;

    public static class FetchProfileItem extends FetchProfile.Item {
        public static final FetchProfileItem UID = new FetchProfileItem("Uid");

        protected FetchProfileItem(String name) {
            super(name);
        }
    }
}