001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.portlet.messageboards.model;
016    
017    import java.io.Serializable;
018    
019    import java.util.List;
020    
021    /**
022     * @author Brian Wing Shun Chan
023     */
024    public interface MBTreeWalker extends Serializable {
025    
026            public List<MBMessage> getChildren(MBMessage message);
027    
028            public int[] getChildrenRange(MBMessage message);
029    
030            public List<MBMessage> getMessages();
031    
032            public MBMessage getRoot();
033    
034            public boolean isLeaf(MBMessage message);
035    
036            public boolean isOdd();
037    
038    }