001 /* 002 Copyright (C) 2003 Laurent Martelli <laurent@aopsys.com> 003 004 This program is free software; you can redistribute it and/or modify 005 it under the terms of the GNU Lesser General Public License as 006 published by the Free Software Foundation; either version 2 of the 007 License, or (at your option) any later version. 008 009 This program is distributed in the hope that it will be useful, but 010 WITHOUT ANY WARRANTY; without even the implied warranty of 011 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 Lesser General Public License for more details. 013 014 You should have received a copy of the GNU Lesser General Public 015 License along with this program; if not, write to the Free Software 016 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 017 USA */ 018 019 package org.objectweb.jac.aspects.queue; 020 021 import org.objectweb.jac.core.rtti.FieldItem; 022 023 public class FieldChangeEvent { 024 Object substance; 025 FieldItem field; 026 Object oldValue; 027 Object newValue; 028 029 public FieldChangeEvent(Object substance, FieldItem field, 030 Object oldValue, Object newValue) { 031 this.substance = substance; 032 this.field = field; 033 this.oldValue = oldValue; 034 this.newValue = newValue; 035 } 036 /** 037 * Gets the object whose field was modified. 038 */ 039 public Object getSubstance() { 040 return substance; 041 } 042 043 /** 044 * Gets the modified field item. 045 */ 046 public FieldItem getField() { 047 return field; 048 } 049 050 /** 051 * Gets the value of the field before the modification. 052 */ 053 public Object getOldValue() { 054 return oldValue; 055 } 056 057 /** 058 * Gets the value of the field after the modification. 059 */ 060 public Object getNewValue() { 061 return newValue; 062 } 063 064 public String toString() { 065 return substance+"."+field.getName()+" changed from "+ 066 oldValue+" to "+newValue; 067 } 068 }