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 }