1
|
/**
|
2
|
* Copyright (C) 2007 EDIT
|
3
|
* European Distributed Institute of Taxonomy
|
4
|
* http://www.e-taxonomy.eu
|
5
|
*
|
6
|
* The contents of this file are subject to the Mozilla Public License Version 1.1
|
7
|
* See LICENSE.TXT at the top of this package for the full license terms.
|
8
|
*/
|
9
|
|
10
|
package eu.etaxonomy.cdm.persistence.hibernate;
|
11
|
|
12
|
import java.io.Serializable;
|
13
|
import java.util.Set;
|
14
|
|
15
|
import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;
|
16
|
import org.hibernate.event.spi.AbstractEvent;
|
17
|
import org.hibernate.event.spi.EventSource;
|
18
|
import org.hibernate.event.spi.PostDeleteEvent;
|
19
|
import org.hibernate.event.spi.PostInsertEvent;
|
20
|
import org.hibernate.event.spi.PostLoadEvent;
|
21
|
import org.hibernate.event.spi.PostUpdateEvent;
|
22
|
import org.hibernate.persister.entity.EntityPersister;
|
23
|
|
24
|
import eu.etaxonomy.cdm.model.common.CdmBase;
|
25
|
|
26
|
/**
|
27
|
* The CrudEvent unifies all CRUD events into one interface.
|
28
|
* Crud as in Create, Retrieve, Update, Delete. This event will only hold CdmBase objects.
|
29
|
*
|
30
|
*
|
31
|
* @author n.hoffmann
|
32
|
* @since 24.03.2009
|
33
|
*/
|
34
|
public class CdmDataChangeEvent extends AbstractEvent{
|
35
|
private static final long serialVersionUID = 9113025682352080372L;
|
36
|
private static final Logger logger = LogManager.getLogger(CdmDataChangeEvent.class);
|
37
|
|
38
|
/**
|
39
|
* The event types currently implemented
|
40
|
*
|
41
|
* @author n.hoffmann
|
42
|
* @since 25.03.2009
|
43
|
* @version 1.0
|
44
|
*/
|
45
|
public enum EventType {
|
46
|
INSERT, LOAD, UPDATE, DELETE
|
47
|
}
|
48
|
|
49
|
private final CdmBase entity;
|
50
|
private final EntityPersister persister;
|
51
|
private final Set<CdmBase> affectedObjects;
|
52
|
|
53
|
|
54
|
private final Object[] state;
|
55
|
// for update only
|
56
|
private Object[] oldState;
|
57
|
private final Serializable id;
|
58
|
protected final EventType eventType;
|
59
|
|
60
|
|
61
|
private CdmDataChangeEvent(
|
62
|
CdmBase entity,
|
63
|
Serializable id,
|
64
|
Object[] state,
|
65
|
Object[] oldState,
|
66
|
EntityPersister persister,
|
67
|
EventSource source,
|
68
|
EventType eventType
|
69
|
) {
|
70
|
super(source);
|
71
|
this.entity = entity;
|
72
|
this.id = id;
|
73
|
this.state = state;
|
74
|
this.oldState = oldState;
|
75
|
this.persister = persister;
|
76
|
this.eventType = eventType;
|
77
|
this.affectedObjects = null;
|
78
|
}
|
79
|
/**
|
80
|
* @param source
|
81
|
*/
|
82
|
private CdmDataChangeEvent(
|
83
|
CdmBase entity,
|
84
|
Set<CdmBase> affectedObjects,
|
85
|
EventType eventType
|
86
|
) {
|
87
|
super(null);
|
88
|
this.entity = entity;
|
89
|
this.persister = null;
|
90
|
this.affectedObjects = affectedObjects;
|
91
|
this.state = null;
|
92
|
this.oldState = null;
|
93
|
this.id = null;
|
94
|
this.eventType = eventType;
|
95
|
}
|
96
|
|
97
|
public CdmBase getEntity() {
|
98
|
return entity;
|
99
|
}
|
100
|
public Serializable getId() {
|
101
|
return id;
|
102
|
}
|
103
|
public EntityPersister getPersister() {
|
104
|
return persister;
|
105
|
}
|
106
|
public Object[] getState() {
|
107
|
return state;
|
108
|
}
|
109
|
public Object[] getOldState() {
|
110
|
if(oldState == null){
|
111
|
oldState = state;
|
112
|
}
|
113
|
return oldState;
|
114
|
}
|
115
|
|
116
|
public Set<CdmBase> getAffectedObjects() {
|
117
|
return affectedObjects;
|
118
|
}
|
119
|
|
120
|
public EventType getEventType(){
|
121
|
return eventType;
|
122
|
}
|
123
|
|
124
|
public boolean isInsert(){
|
125
|
return eventType == EventType.INSERT;
|
126
|
}
|
127
|
|
128
|
public boolean isLoad(){
|
129
|
return eventType == EventType.LOAD;
|
130
|
}
|
131
|
|
132
|
public boolean isUpdate(){
|
133
|
return eventType == EventType.UPDATE;
|
134
|
}
|
135
|
|
136
|
public boolean isDelete(){
|
137
|
return eventType == EventType.DELETE;
|
138
|
}
|
139
|
|
140
|
/**
|
141
|
* @param event
|
142
|
* @return
|
143
|
*/
|
144
|
public static CdmDataChangeEvent NewInstance(AbstractEvent event) {
|
145
|
|
146
|
CdmDataChangeEvent mediationEvent = null;
|
147
|
try{
|
148
|
if(event instanceof PostInsertEvent){
|
149
|
PostInsertEvent postEvent = (PostInsertEvent) event;
|
150
|
mediationEvent = new CdmDataChangeEvent(
|
151
|
(CdmBase)postEvent.getEntity(),
|
152
|
postEvent.getId(),
|
153
|
postEvent.getState(),
|
154
|
null,
|
155
|
postEvent.getPersister(),
|
156
|
postEvent.getSession(),
|
157
|
EventType.INSERT
|
158
|
);
|
159
|
}
|
160
|
if(event instanceof PostLoadEvent){
|
161
|
PostLoadEvent updateEvent = (PostLoadEvent) event;
|
162
|
mediationEvent = new CdmDataChangeEvent(
|
163
|
(CdmBase)updateEvent.getEntity(),
|
164
|
updateEvent.getId(),
|
165
|
null,
|
166
|
null,
|
167
|
updateEvent.getPersister(),
|
168
|
updateEvent.getSession(),
|
169
|
EventType.LOAD
|
170
|
);
|
171
|
}
|
172
|
if(event instanceof PostUpdateEvent){
|
173
|
PostUpdateEvent updateEvent = (PostUpdateEvent) event;
|
174
|
mediationEvent = new CdmDataChangeEvent(
|
175
|
(CdmBase)updateEvent.getEntity(),
|
176
|
updateEvent.getId(),
|
177
|
updateEvent.getState(),
|
178
|
updateEvent.getOldState(),
|
179
|
updateEvent.getPersister(),
|
180
|
updateEvent.getSession(),
|
181
|
EventType.UPDATE
|
182
|
);
|
183
|
}
|
184
|
if(event instanceof PostDeleteEvent){
|
185
|
PostDeleteEvent deleteEvent = (PostDeleteEvent) event;
|
186
|
mediationEvent = new CdmDataChangeEvent(
|
187
|
(CdmBase)deleteEvent.getEntity(),
|
188
|
deleteEvent.getId(),
|
189
|
deleteEvent.getDeletedState(),
|
190
|
null,
|
191
|
deleteEvent.getPersister(),
|
192
|
deleteEvent.getSession(),
|
193
|
EventType.DELETE
|
194
|
);
|
195
|
}
|
196
|
}catch(ClassCastException e){
|
197
|
// we are only interested in CdmBase entities, we have the try/catch block in case another entity slips through
|
198
|
logger.warn("tried to instantiate event for non CdmBase entity");
|
199
|
}
|
200
|
|
201
|
return mediationEvent;
|
202
|
}
|
203
|
|
204
|
public static CdmDataChangeEvent NewInstance(CdmBase entity, Set<CdmBase> affectedObjects, EventType eventType) {
|
205
|
|
206
|
return new CdmDataChangeEvent(entity, affectedObjects, eventType);
|
207
|
}
|
208
|
|
209
|
}
|