001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.tide.data;
023
024import java.io.Externalizable;
025import java.io.IOException;
026import java.io.ObjectInput;
027import java.io.ObjectOutput;
028import java.io.Serializable;
029import java.util.HashMap;
030import java.util.Map;
031import java.util.Map.Entry;
032
033
034/**
035 * @author William DRAI
036 */
037public class Change implements Externalizable {
038
039    private static final long serialVersionUID = 1L;
040    
041    private String className;
042    private String uid;
043    private Serializable id;
044    private Number version;
045    private Map<String, Object> changes;
046        
047    
048    public Change() {
049    }
050    
051    public Change(String className, Serializable id, Number version, String uid) {
052        this.className = className;
053        this.id = id;
054        this.version = version;
055        this.uid = uid;
056        this.changes = new HashMap<String, Object>();
057    }
058
059        public String getClassName() {
060                return className;
061        }
062
063        public String getUid() {
064                return uid;
065        }
066
067        public Serializable getId() {
068                return id;
069        }
070
071        public Number getVersion() {
072                return version;
073        }
074
075        public Map<String, Object> getChanges() {
076                return changes;
077        }
078
079        public void addCollectionChanges(String propertyName, CollectionChange[] collChanges) {
080                CollectionChanges existingChanges = (CollectionChanges)changes.get(propertyName);
081                if (existingChanges == null)
082                        changes.put(propertyName, new CollectionChanges(collChanges));
083                else {
084                        CollectionChange[] newChanges = new CollectionChange[existingChanges.getChanges().length+collChanges.length];
085                    System.arraycopy(existingChanges.getChanges(), 0, newChanges, 0, existingChanges.getChanges().length);
086                    System.arraycopy(collChanges, 0, newChanges, existingChanges.getChanges().length, collChanges.length);
087                    existingChanges.setChanges(newChanges);
088                }
089        }
090        
091        @Override
092        public String toString() {
093                StringBuilder sb = new StringBuilder();
094                sb.append(getClassName()).append(':').append(getUid()).append(":").append(getId()).append(':').append(getVersion()).append("={");
095                for (Entry<String, Object> change : getChanges().entrySet()) {
096                        sb.append(change.getKey()).append(": ").append(change.getValue() != null ? change.getValue().toString() : "null");
097                }
098                sb.append("}");
099                return sb.toString();
100        }
101        
102        public void writeExternal(ObjectOutput out) throws IOException {
103                out.writeObject(className);
104                out.writeObject(uid);
105                out.writeObject(id);
106                out.writeObject(version);
107                out.writeObject(changes);
108        }
109
110        @SuppressWarnings("unchecked")
111        public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
112                className = (String)in.readObject();
113                uid = (String)in.readObject();
114                id = (Serializable)in.readObject();
115                version = (Number)in.readObject();
116                changes = (Map<String, Object>)in.readObject();
117        }
118}