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1 package org.hibernate.ce.auction.persistence;
2
3 import java.io.Serializable  ;
4 import java.sql.PreparedStatement ;
5 import java.sql.ResultSet ;
6 import java.sql.SQLException ;
7 import java.sql.Types ;
8 import java.util.Properties ;
9
10 import org.hibernate.HibernateException;
11 import org.hibernate.usertype.EnhancedUserType;
12 import org.hibernate.usertype.ParameterizedType;
13
14
23 public class EnumUserType implements EnhancedUserType, ParameterizedType {
24
25 private Class <Enum > enumClass;
26
27 public void setParameterValues(Properties parameters) {
28 String enumClassName = parameters.getProperty("enumClassName");
29 try {
30 enumClass = (Class <Enum >) Class.forName(enumClassName);
31 }
32 catch (ClassNotFoundException cnfe) {
33 throw new HibernateException("Enum class not found", cnfe);
34 }
35 }
36
37 public Object assemble(Serializable cached, Object owner)
38 throws HibernateException {
39 return cached;
40 }
41
42 public Object deepCopy(Object value) throws HibernateException {
43 return value;
44 }
45
46 public Serializable disassemble(Object value) throws HibernateException {
47 return (Enum ) value;
48 }
49
50 public boolean equals(Object x, Object y) throws HibernateException {
51 return x==y;
52 }
53
54 public int hashCode(Object x) throws HibernateException {
55 return x.hashCode();
56 }
57
58 public boolean isMutable() {
59 return false;
60 }
61
62 public Object nullSafeGet(ResultSet rs, String [] names, Object owner)
63 throws HibernateException, SQLException {
64 String name = rs.getString( names[0] );
65 return rs.wasNull() ? null : Enum.valueOf(enumClass, name);
66 }
67
68 public void nullSafeSet(PreparedStatement st, Object value, int index)
69 throws HibernateException, SQLException {
70 if (value==null) {
71 st.setNull(index, Types.VARCHAR);
72 }
73 else {
74 st.setString( index, ( (Enum ) value ).name() );
75 }
76 }
77
78 public Object replace(Object original, Object target, Object owner)
79 throws HibernateException {
80 return original;
81 }
82
83 public Class returnedClass() {
84 return enumClass;
85 }
86
87 public int[] sqlTypes() {
88 return new int[] { Types.VARCHAR };
89 }
90
91 public Object fromXMLString(String xmlValue) {
92 return Enum.valueOf(enumClass, xmlValue);
93 }
94
95 public String objectToSQLString(Object value) {
96 return '\'' + ( (Enum ) value ).name() + '\'';
97 }
98
99 public String toXMLString(Object value) {
100 return ( (Enum ) value ).name();
101 }
102
103 }
104 |
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