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1 package org.hibernate.proxy;
3
4 import java.io.Serializable  ;
5
6 import org.hibernate.HibernateException;
7 import org.hibernate.LazyInitializationException;
8 import org.hibernate.engine.EntityKey;
9 import org.hibernate.engine.SessionImplementor;
10
11
14 public abstract class AbstractLazyInitializer implements LazyInitializer {
15
16 private Object target;
17 private String entityName;
18 private Serializable id;
19 private transient SessionImplementor session;
20 private boolean unwrap;
21
22 protected AbstractLazyInitializer(String entityName, Serializable id, SessionImplementor session) {
23 this.id = id;
24 this.session = session;
25 this.entityName = entityName;
26 }
27
28 public final Serializable getIdentifier() {
29 return id;
30 }
31
32 public final void setIdentifier(Serializable id) {
33 this.id = id;
34 }
35
36 public final String getEntityName() {
37 return entityName;
38 }
39
40 public final boolean isUninitialized() {
41 return target == null;
42 }
43
44 public final SessionImplementor getSession() {
45 return session;
46 }
47
48 public final void initialize() throws HibernateException {
49 if (target==null) {
50 if ( session==null ) {
51 throw new LazyInitializationException("could not initialize proxy - no Session");
52 }
53 else if ( !session.isOpen() ) {
54 throw new LazyInitializationException("could not initialize proxy - the owning Session was closed");
55 }
56 else if ( !session.isConnected() ) {
57 throw new LazyInitializationException("could not initialize proxy - the owning Session is disconnected");
58 }
59 else {
60 target = session.immediateLoad(entityName, id);
61 }
62 }
63 }
64
65 public final void setSession(SessionImplementor s) throws HibernateException {
66 if (s!=session) {
67 if ( session!=null && session.isOpen() ) {
68 throw new HibernateException("illegally attempted to associate a proxy with two open Sessions");
70 }
71 else {
72 session = s;
73 }
74 }
75 }
76
77 public final void setImplementation(Object target) {
78 this.target = target;
79 }
80
81
84 public final Object getImplementation() {
85 initialize();
86 return target;
87 }
88
89
93 public final Object getImplementation(SessionImplementor s) throws HibernateException {
94 return s.getPersistenceContext().getEntity( new EntityKey(
95 getIdentifier(),
96 s.getFactory().getEntityPersister( getEntityName() ),
97 s.getEntityMode()
98 ) );
99 }
100
101 protected final void setTarget(Object target) {
102 this.target = target;
103 }
104
105 protected final Object getTarget() {
106 return target;
107 }
108
109 public boolean isUnwrap() {
110 return unwrap;
111 }
112
113 public void setUnwrap(boolean unwrap) {
114 this.unwrap = unwrap;
115 }
116
117 }
118 |
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