001 /* 002 * Copyright 2001-2011 Stephen Colebourne 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 package org.joda.time.contrib.hibernate; 017 018 import java.io.Serializable; 019 import java.sql.PreparedStatement; 020 import java.sql.ResultSet; 021 import java.sql.SQLException; 022 import java.sql.Types; 023 024 import org.hibernate.HibernateException; 025 import org.hibernate.type.StandardBasicTypes; 026 import org.hibernate.usertype.EnhancedUserType; 027 import org.joda.time.DateTime; 028 029 /** 030 * Persist {@link org.joda.time.DateTime} via hibernate. 031 * 032 * @author Mario Ivankovits (mario@ops.co.at) 033 */ 034 public class PersistentDateTime implements EnhancedUserType, Serializable { 035 036 public static final PersistentDateTime INSTANCE = new PersistentDateTime(); 037 038 private static final int[] SQL_TYPES = new int[] { Types.TIMESTAMP, }; 039 040 public int[] sqlTypes() { 041 return SQL_TYPES; 042 } 043 044 public Class returnedClass() { 045 return DateTime.class; 046 } 047 048 public boolean equals(Object x, Object y) throws HibernateException { 049 if (x == y) { 050 return true; 051 } 052 if (x == null || y == null) { 053 return false; 054 } 055 DateTime dtx = (DateTime) x; 056 DateTime dty = (DateTime) y; 057 058 return dtx.equals(dty); 059 } 060 061 public int hashCode(Object object) throws HibernateException { 062 return object.hashCode(); 063 } 064 065 public Object nullSafeGet(ResultSet resultSet, String[] strings, Object object) throws HibernateException, SQLException { 066 return nullSafeGet(resultSet, strings[0]); 067 068 } 069 070 public Object nullSafeGet(ResultSet resultSet, String string) throws SQLException { 071 Object timestamp = StandardBasicTypes.TIMESTAMP.nullSafeGet(resultSet, string); 072 if (timestamp == null) { 073 return null; 074 } 075 076 return new DateTime(timestamp); 077 } 078 079 public void nullSafeSet(PreparedStatement preparedStatement, Object value, int index) throws HibernateException, SQLException { 080 if (value == null) { 081 StandardBasicTypes.TIMESTAMP.nullSafeSet(preparedStatement, null, index); 082 } else { 083 StandardBasicTypes.TIMESTAMP.nullSafeSet(preparedStatement, ((DateTime) value).toDate(), index); 084 } 085 } 086 087 public Object deepCopy(Object value) throws HibernateException { 088 return value; 089 } 090 091 public boolean isMutable() { 092 return false; 093 } 094 095 public Serializable disassemble(Object value) throws HibernateException { 096 return (Serializable) value; 097 } 098 099 public Object assemble(Serializable cached, Object value) throws HibernateException { 100 return cached; 101 } 102 103 public Object replace(Object original, Object target, Object owner) throws HibernateException { 104 return original; 105 } 106 107 public String objectToSQLString(Object object) { 108 throw new UnsupportedOperationException(); 109 } 110 111 public String toXMLString(Object object) { 112 return object.toString(); 113 } 114 115 public Object fromXMLString(String string) { 116 return new DateTime(string); 117 } 118 119 }