/* * Geotoolkit.org - An Open Source Java GIS Toolkit * http://www.geotoolkit.org * * (C) 2009-2012, Geomatys * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. */ package org.geotoolkit.index.tree.basic; /** * To choose split made. * * <blockquote><font size=-1> <strong>NOTE: - LINEAR split : Choose two objects * as seeds for the two nodes, where these objects are as apart as possible. * Then consider each remaining object in a random order and assign it to the * node requiring the smallest enlargement of its respective boundary.<br/><br/> * * - QUADRATIC split : Choose two objects as seeds for the two nodes, where * these objects if put together create as much dead space as possible. Then, * until there are no remaining objects, insert the object for which the * difference of dead space if assigned to each of the two nodes that requires * lesser enlargement of its respective boundary.<br/><br/> * * Moreover, LINEAR split is more faster than QUADRATIC during insertion are remove action, * whereas QUADRATIC split permit a faster search action than LINEAR.<br/> * User should choose split made in fonction of its use.<br/> * More insertion or remove action , LINEAR is advisable.<br/> * Few insertion or remove and more search action QUADRATIC is advisable.</strong> </font></blockquote> * * @see BasicRTree#splitNode(org.geotoolkit.index.tree.DefaultNode) . * @author Rémi Maréchal (Geomatys). */ public enum SplitCase { QUADRATIC, LINEAR }