|
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.EntityMode;
10 import org.hibernate.Hibernate;
11 import org.hibernate.HibernateException;
12 import org.hibernate.engine.SessionImplementor;
13 import org.hibernate.util.SerializationHelper;
14
15
20 public class SerializableType extends MutableType {
21
22 private final Class serializableClass;
23
24 public SerializableType(Class serializableClass) {
25 this.serializableClass = serializableClass;
26 }
27
28 public void set(PreparedStatement st, Object value, int index) throws HibernateException, SQLException {
29 Hibernate.BINARY.set(st, toBytes(value), index);
30 }
31
32 public Object get(ResultSet rs, String name) throws HibernateException, SQLException {
33
34 byte[] bytes = (byte[]) Hibernate.BINARY.get(rs, name);
35 if ( bytes==null ) {
36 return null;
37 }
38 else {
39 return fromBytes(bytes);
40 }
41 }
42
43 public Class getReturnedClass() {
44 return serializableClass;
45 }
46
47 public boolean isEqual(Object x, Object y) throws HibernateException {
48 if (x==y) return true;
49 if (x==null || y==null) return false;
50 return Hibernate.BINARY.isEqual( toBytes(x), toBytes(y) );
51 }
52
53 public int getHashCode(Object x, EntityMode entityMode) {
54 return Hibernate.BINARY.getHashCode( toBytes(x), entityMode );
55 }
56
57 public String toString(Object value) throws HibernateException {
58 return Hibernate.BINARY.toString( toBytes(value) );
59 }
60
61 public Object fromStringValue(String xml) throws HibernateException {
62 return fromBytes( (byte[]) Hibernate.BINARY.fromStringValue(xml) );
63 }
64
65 public String getName() {
66 return (serializableClass==Serializable .class) ? "serializable" : serializableClass.getName();
67 }
68
69 public Object deepCopyNotNull(Object value) throws HibernateException {
70 return fromBytes( toBytes(value) );
71 }
72
73 private static byte[] toBytes(Object object) throws SerializationException {
74 return SerializationHelper.serialize( (Serializable ) object );
75 }
76
77 private static Object fromBytes( byte[] bytes ) throws SerializationException {
78 return SerializationHelper.deserialize(bytes);
79 }
80
81 public int sqlType() {
82 return Hibernate.BINARY.sqlType();
83 }
84
85 public Object assemble(Serializable cached, SessionImplementor session, Object owner)
86 throws HibernateException {
87 return (cached==null) ? null : fromBytes( (byte[]) cached );
88 }
89
90 public Serializable disassemble(Object value, SessionImplementor session, Object owner)
91 throws HibernateException {
92 return (value==null) ? null : toBytes(value);
93 }
94
95 }
96
97
98
99
100
101
102
103 |
Popular Tags |
Java API By Example, From Geeks To Geeks.