001/* 002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * bstefanescu 018 * 019 * $Id$ 020 */ 021 022package org.nuxeo.ecm.core.api.model; 023 024import java.io.Serializable; 025import java.util.HashSet; 026import java.util.Iterator; 027import java.util.Set; 028 029/** 030 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a> TODO is this really needed? 031 */ 032public class PropertyDiff implements Iterable<PropertyDiff> { 033 034 public static final int MODIFIED = 1; 035 036 public static final int ADDED = 2; 037 038 public static final int REMOVED = 3; 039 040 public int type; 041 042 public Serializable value; 043 044 public String name; 045 046 public final Set<PropertyDiff> children; 047 048 public PropertyDiff(int type, String name) { 049 this(type, name, null); 050 } 051 052 // FIXME: not fully implemented 053 public PropertyDiff(int type, String name, Serializable value) { 054 children = new HashSet<PropertyDiff>(); 055 } 056 057 public boolean hasChildren() { 058 return !children.isEmpty(); 059 } 060 061 public void modify(String name, Serializable value) { 062 children.add(new PropertyDiff(MODIFIED, name, value)); 063 } 064 065 public void remove(String name) { 066 children.add(new PropertyDiff(REMOVED, name)); 067 } 068 069 public void add(String name, Serializable value) { 070 children.add(new PropertyDiff(ADDED, name, value)); 071 } 072 073 @Override 074 public Iterator<PropertyDiff> iterator() { 075 return children.iterator(); 076 } 077 078 @Override 079 public boolean equals(Object obj) { 080 if (obj instanceof PropertyDiff) { 081 return name.equals(((PropertyDiff) obj).name); 082 } 083 return false; 084 } 085 086 @Override 087 public int hashCode() { 088 return (name == null) ? 0 : name.hashCode(); 089 } 090 091}