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1 package org.hibernate.type;
3
4 import java.io.Serializable  ;
5 import java.sql.PreparedStatement ;
6 import java.sql.ResultSet ;
7 import java.sql.SQLException ;
8
9 import org.hibernate.HibernateException;
10 import org.hibernate.MappingException;
11 import org.hibernate.engine.EntityKey;
12 import org.hibernate.engine.Mapping;
13 import org.hibernate.engine.SessionImplementor;
14 import org.hibernate.persister.entity.EntityPersister;
15 import org.hibernate.util.ArrayHelper;
16
17
21 public class OneToOneType extends EntityType {
22
23 private final ForeignKeyDirection foreignKeyType;
24 private final String propertyName;
25 private final String entityName;
26
27 public String getPropertyName() {
28 return propertyName;
29 }
30
31 public boolean isNull(Object owner, SessionImplementor session) {
32
33 if ( propertyName != null ) {
34
35 EntityPersister ownerPersister = session.getFactory()
36 .getEntityPersister(entityName);
37 Serializable id = session.getContextEntityIdentifier(owner);
38
39 EntityKey entityKey = new EntityKey( id, ownerPersister, session.getEntityMode() );
40
41 return session.getPersistenceContext()
42 .isPropertyNull( entityKey, getPropertyName() );
43
44 }
45 else {
46 return false;
47 }
48
49 }
50
51 public int getColumnSpan(Mapping session) throws MappingException {
52 return 0;
53 }
54
55 public int[] sqlTypes(Mapping session) throws MappingException {
56 return ArrayHelper.EMPTY_INT_ARRAY;
57 }
58
59 public boolean[] toColumnNullness(Object value, Mapping mapping) {
60 return ArrayHelper.EMPTY_BOOLEAN_ARRAY;
61 }
62
63 public OneToOneType(
64 String referencedEntityName,
65 ForeignKeyDirection foreignKeyType,
66 String uniqueKeyPropertyName,
67 boolean lazy,
68 boolean unwrapProxy,
69 boolean isEmbeddedInXML,
70 String entityName,
71 String propertyName
72 ) {
73 super(
74 referencedEntityName,
75 uniqueKeyPropertyName,
76 !lazy,
77 isEmbeddedInXML,
78 unwrapProxy
79 );
80 this.foreignKeyType = foreignKeyType;
81 this.propertyName = propertyName;
82 this.entityName = entityName;
83 }
84
85 public void nullSafeSet(PreparedStatement st, Object value, int index, boolean[] settable, SessionImplementor session) {
86 }
88
89 public void nullSafeSet(PreparedStatement st, Object value, int index, SessionImplementor session) {
90 }
92
93 public boolean isOneToOne() {
94 return true;
95 }
96
97 public boolean isDirty(Object old, Object current, SessionImplementor session) {
98 return false;
99 }
100
101 public boolean isModified(Object old, Object current, SessionImplementor session) {
102 return false;
103 }
104
105 public ForeignKeyDirection getForeignKeyDirection() {
106 return foreignKeyType;
107 }
108
109 public Object hydrate(
110 ResultSet rs,
111 String [] names,
112 SessionImplementor session,
113 Object owner)
114 throws HibernateException, SQLException {
115
116 return session.getContextEntityIdentifier(owner);
117 }
118
119 protected boolean isNullable() {
120 return foreignKeyType==ForeignKeyDirection.FOREIGN_KEY_TO_PARENT;
121 }
122
123 public boolean useLHSPrimaryKey() {
124 return true;
125 }
126
127 public Serializable disassemble(Object value, SessionImplementor session, Object owner)
128 throws HibernateException {
129 return null;
130 }
131
132 public Object assemble(Serializable oid, SessionImplementor session, Object owner)
133 throws HibernateException {
134 return resolve( session.getContextEntityIdentifier(owner), session, owner );
138 }
139
140 public boolean isAlwaysDirtyChecked() {
141 return false;
142 }
146
147 }
148
149 |
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