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.util; 020 021import lucee.runtime.PageContext; 022import lucee.runtime.type.Collection.Key; 023import lucee.runtime.type.Null; 024 025public class CallerUtil { 026 public static Object get(PageContext pc,Object coll, Key[] keys, Object defaultValue) { 027 if(coll==null) return defaultValue; 028 int to=keys.length-1; 029 for(int i=0;i<=to;i++){ 030 coll=((VariableUtilImpl)pc.getVariableUtil()).getCollection(pc, coll, keys[i], Null.NULL); 031 if(coll==Null.NULL || (coll==null && i<to)) return defaultValue; 032 } 033 return coll; 034 } 035}