001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019package lucee.runtime.type.comparator; 020 021import lucee.runtime.exp.PageException; 022import lucee.runtime.op.Caster; 023import lucee.runtime.op.Operator; 024 025 026/** 027 * Implementation of a Comparator, compares to Softregister Objects 028 */ 029public final class NumberSortRegisterComparator implements ExceptionComparator { 030 031 private boolean isAsc; 032 private PageException pageException=null; 033 034 /** 035 * constructor of the class 036 * @param isAsc is ascendinf or descending 037 */ 038 public NumberSortRegisterComparator(boolean isAsc) { 039 040 this.isAsc=isAsc; 041 } 042 043 /** 044 * @return Returns the expressionException. 045 */ 046 public PageException getPageException() { 047 return pageException; 048 } 049 050 @Override 051 public int compare(Object oLeft, Object oRight) { 052 try { 053 if(pageException!=null) return 0; 054 else if(isAsc) return compareObjects(oLeft, oRight); 055 else return compareObjects(oRight, oLeft); 056 } catch (PageException e) { 057 pageException=e; 058 return 0; 059 } 060 } 061 062 private int compareObjects(Object oLeft, Object oRight) throws PageException { 063 /*return Operator.compare( 064 ((SortRegister)oLeft).getValue(), 065 ((SortRegister)oRight).getValue() 066 ); 067 */ 068 return Operator.compare( 069 Caster.toDoubleValue(((SortRegister)oLeft).getValue()) 070 , 071 Caster.toDoubleValue(((SortRegister)oRight).getValue()) 072 ); 073 074 } 075 076}