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.Instant; 028 029 /** 030 * Persist {@link org.joda.time.Instant} via hibernate as a TIMESTAMP. 031 * 032 * @author Olav Reinert (oreinert@sourceforge.net) 033 */ 034 public class PersistentInstant implements EnhancedUserType { 035 036 public static final PersistentInstant INSTANCE = new PersistentInstant(); 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 Instant.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 Instant ix = (Instant) x; 056 Instant iy = (Instant) y; 057 return ix.equals(iy); 058 } 059 060 public int hashCode(Object object) throws HibernateException { 061 return object.hashCode(); 062 } 063 064 public Object nullSafeGet(ResultSet resultSet, String[] names, Object object) throws HibernateException, SQLException { 065 return nullSafeGet(resultSet, names[0]); 066 } 067 068 public Object nullSafeGet(ResultSet resultSet, String name) throws SQLException { 069 Object value = StandardBasicTypes.TIMESTAMP.nullSafeGet(resultSet, name); 070 if (value == null) { 071 return null; 072 } 073 return new Instant(value); 074 } 075 076 public void nullSafeSet(PreparedStatement preparedStatement, Object value, int index) throws HibernateException, SQLException { 077 if (value == null) { 078 StandardBasicTypes.TIMESTAMP.nullSafeSet(preparedStatement, null, index); 079 } else { 080 StandardBasicTypes.TIMESTAMP.nullSafeSet(preparedStatement, ((Instant) value).toDate(), index); 081 } 082 } 083 084 public Object deepCopy(Object value) throws HibernateException { 085 return value; 086 } 087 088 public boolean isMutable() { 089 return false; 090 } 091 092 public Serializable disassemble(Object value) throws HibernateException { 093 return (Serializable) value; 094 } 095 096 public Object assemble(Serializable serializable, Object value) throws HibernateException { 097 return serializable; 098 } 099 100 public Object replace(Object original, Object target, Object owner) throws HibernateException { 101 return original; 102 } 103 104 // __________ EnhancedUserType ____________________ 105 106 public String objectToSQLString(Object object) { 107 throw new UnsupportedOperationException(); 108 } 109 110 public String toXMLString(Object object) { 111 return object.toString(); 112 } 113 114 public Object fromXMLString(String string) { 115 return new Instant(string); 116 } 117 118 }