01: //$Id: DefaultUpdateEventListener.java 5839 2005-02-22 03:09:35Z oneovthafew $
02: package org.hibernate.event.def;
03:
04: import java.io.Serializable;
05:
06: import org.hibernate.HibernateException;
07: import org.hibernate.ObjectDeletedException;
08: import org.hibernate.EntityMode;
09: import org.hibernate.engine.EntityEntry;
10: import org.hibernate.engine.Status;
11: import org.hibernate.event.SaveOrUpdateEvent;
12: import org.hibernate.persister.entity.EntityPersister;
13:
14: /**
15: * An event handler for update() events
16: * @author Gavin King
17: */
18: public class DefaultUpdateEventListener extends
19: DefaultSaveOrUpdateEventListener {
20:
21: protected Serializable performSaveOrUpdate(SaveOrUpdateEvent event) {
22: // this implementation is supposed to tolerate incorrect unsaved-value
23: // mappings, for the purpose of backward-compatibility
24: EntityEntry entry = event.getSession().getPersistenceContext()
25: .getEntry(event.getEntity());
26: if (entry != null) {
27: if (entry.getStatus() == Status.DELETED) {
28: throw new ObjectDeletedException(
29: "deleted instance passed to update()", null,
30: event.getEntityName());
31: } else {
32: return entityIsPersistent(event);
33: }
34: } else {
35: entityIsDetached(event);
36: return null;
37: }
38: }
39:
40: /**
41: * If the user specified an id, assign it to the instance and use that,
42: * otherwise use the id already assigned to the instance
43: */
44: protected Serializable getUpdateId(Object entity,
45: EntityPersister persister, Serializable requestedId,
46: EntityMode entityMode) throws HibernateException {
47:
48: if (requestedId == null) {
49: return super.getUpdateId(entity, persister, requestedId,
50: entityMode);
51: } else {
52: persister.setIdentifier(entity, requestedId, entityMode);
53: return requestedId;
54: }
55: }
56:
57: }
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