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1   /*
2    *  Copyright 2001-2011 Stephen Colebourne
3    *
4    *  Licensed under the Apache License, Version 2.0 (the "License");
5    *  you may not use this file except in compliance with the License.
6    *  You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   *  Unless required by applicable law or agreed to in writing, software
11   *  distributed under the License is distributed on an "AS IS" BASIS,
12   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   *  See the License for the specific language governing permissions and
14   *  limitations under the License.
15   */
16  package org.joda.time.contrib.hibernate;
17  
18  import java.io.Serializable;
19  import java.sql.PreparedStatement;
20  import java.sql.ResultSet;
21  import java.sql.SQLException;
22  import java.sql.Time;
23  import java.sql.Types;
24  
25  import org.hibernate.HibernateException;
26  import org.hibernate.type.StandardBasicTypes;
27  import org.hibernate.usertype.EnhancedUserType;
28  import org.joda.time.DateTime;
29  import org.joda.time.TimeOfDay;
30  
31  /**
32   * Persist {@link org.joda.time.TimeOfDay} via hibernate.
33   * This uses java.sql.Time and the time datatype of your database.
34   * Notice: You might loose the milliseconds part.
35   * 
36   * @author Mario Ivankovits (mario@ops.co.at)
37   */
38  public class PersistentTimeOfDay implements EnhancedUserType, Serializable {
39  
40      private final DateTime timeBase = new DateTime(1970, 1, 1, 0, 0, 0, 0);
41  
42      public static final PersistentTimeOfDay INSTANCE = new PersistentTimeOfDay();
43  
44      private static final int[] SQL_TYPES = new int[] { Types.TIME, };
45  
46      public int[] sqlTypes() {
47          return SQL_TYPES;
48      }
49  
50      public Class returnedClass() {
51          return TimeOfDay.class;
52      }
53  
54      public boolean equals(Object x, Object y) throws HibernateException {
55          if (x == y) {
56              return true;
57          }
58          if (x == null || y == null) {
59              return false;
60          }
61          TimeOfDay dtx = (TimeOfDay) x;
62          TimeOfDay dty = (TimeOfDay) y;
63          return dtx.equals(dty);
64      }
65  
66      public int hashCode(Object object) throws HibernateException {
67          return object.hashCode();
68      }
69  
70      public Object nullSafeGet(ResultSet resultSet, String[] strings, Object object) throws HibernateException, SQLException {
71          return nullSafeGet(resultSet, strings[0]);
72  
73      }
74  
75      public Object nullSafeGet(ResultSet resultSet, String string) throws SQLException {
76          Object date = StandardBasicTypes.TIME.nullSafeGet(resultSet, string);
77          if (date == null) {
78              return null;
79          }
80  
81          return new TimeOfDay(date);
82      }
83  
84      public void nullSafeSet(PreparedStatement preparedStatement, Object value, int index) throws HibernateException, SQLException {
85          if (value == null) {
86              StandardBasicTypes.TIME.nullSafeSet(preparedStatement, null, index);
87          } else {
88              StandardBasicTypes.TIME.nullSafeSet(preparedStatement,
89                      new Time(((TimeOfDay) value).toDateTime(timeBase).getMillis()), index);
90          }
91      }
92  
93      public Object deepCopy(Object value) throws HibernateException {
94          return value;
95      }
96  
97      public boolean isMutable() {
98          return false;
99      }
100 
101     public Serializable disassemble(Object value) throws HibernateException {
102         return (Serializable) value;
103     }
104 
105     public Object assemble(Serializable cached, Object value) throws HibernateException {
106         return cached;
107     }
108 
109     public Object replace(Object original, Object target, Object owner) throws HibernateException {
110         return original;
111     }
112 
113     public String objectToSQLString(Object object) {
114         throw new UnsupportedOperationException();
115     }
116 
117     public String toXMLString(Object object) {
118         return object.toString();
119     }
120 
121     public Object fromXMLString(String string) {
122         return new TimeOfDay(string);
123     }
124 
125 }