/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
package com.espertech.esper.spatial.quadtree.mxciffilterindex;
import com.espertech.esper.spatial.quadtree.mxcif.MXCIFQuadTree;
import com.espertech.esper.spatial.quadtree.mxcif.MXCIFQuadTreeNode;
import com.espertech.esper.spatial.quadtree.mxcif.MXCIFQuadTreeNodeLeaf;
public class MXCIFQuadTreeFilterIndexEmpty {
public static boolean isEmpty(MXCIFQuadTree<Object> quadTree) {
return isEmpty(quadTree.getRoot());
}
public static boolean isEmpty(MXCIFQuadTreeNode<Object> node) {
if (node instanceof MXCIFQuadTreeNodeLeaf) {
MXCIFQuadTreeNodeLeaf<Object> leaf = (MXCIFQuadTreeNodeLeaf<Object>) node;
return leaf.getData() == null;
}
return false;
}
}