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.ref; 020 021import lucee.runtime.PageContext; 022import lucee.runtime.exp.PageException; 023import lucee.runtime.type.Collection; 024import lucee.runtime.type.KeyImpl; 025import lucee.runtime.type.StructImpl; 026 027/** 028 * Handle a Reference 029 */ 030public final class ReferenceReference implements Reference { 031 032 private Reference reference; 033 private String key; 034 035 /** 036 * @param reference 037 * @param key 038 */ 039 public ReferenceReference(Reference reference, String key) { 040 this.reference=reference; 041 this.key=key; 042 } 043 044 @Override 045 public Collection.Key getKey() { 046 return KeyImpl.init(key); 047 } 048 049 @Override 050 public String getKeyAsString() { 051 return key; 052 } 053 054 @Override 055 public Object get(PageContext pc) throws PageException { 056 return pc.getCollection(reference.get(pc),key); 057 } 058 059 @Override 060 public Object get(PageContext pc, Object defaultValue) { 061 return pc.getCollection(reference.get(pc,null),key,defaultValue); 062 } 063 064 @Override 065 public Object set(PageContext pc, Object value) throws PageException { 066 return pc.set(reference.touch(pc),key,value); 067 } 068 069 @Override 070 public Object setEL(PageContext pc, Object value) { 071 try { 072 return set(pc,value); 073 } catch (PageException e) { 074 return null; 075 } 076 } 077 078 @Override 079 public Object touch(PageContext pc) throws PageException { 080 Object parent=reference.touch(pc); 081 Object o= pc.getCollection(parent,key,null); 082 if(o!=null) return o; 083 return pc.set(parent,key,new StructImpl()); 084 } 085 086 public Object touchEL(PageContext pc) { 087 Object parent=reference.touchEL(pc); 088 Object o= pc.getCollection(parent,key,null); 089 if(o!=null) return o; 090 try { 091 return pc.set(parent,key,new StructImpl()); 092 } catch (PageException e) { 093 return null; 094 } 095 } 096 097 @Override 098 public Object remove(PageContext pc) throws PageException { 099 return pc.getVariableUtil().remove(reference.get(pc),key); 100 } 101 102 @Override 103 public Object removeEL(PageContext pc) { 104 return pc.getVariableUtil().removeEL(reference.get(pc,null),key); 105 } 106 107 @Override 108 public Object getParent() { 109 return reference; 110 } 111 @Override 112 public String toString() { 113 return "java.util.ReferenceReference(reference:"+reference+";key:"+key+")"; 114 } 115}