Java tutorial
/* * Copyright 2007 the original author or authors. Licensed under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with the License. You may obtain * a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable * law or agreed to in writing, software distributed under the License is distributed on an "AS IS" * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License * for the specific language governing permissions and limitations under the License. */ package com.welflex.model.hibernate; import java.io.Serializable; import java.sql.Date; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Types; import org.hibernate.HibernateException; import org.hibernate.dialect.Dialect; import org.hibernate.type.LiteralType; import org.hibernate.usertype.UserType; import org.joda.time.LocalDate; public class LocalDateUserType implements UserType, LiteralType { public int[] sqlTypes() { return new int[] { Types.DATE }; } public Class<LocalDate> returnedClass() { return LocalDate.class; } public boolean isMutable() { return false; } public Object deepCopy(Object value) throws HibernateException { return value; } public Serializable disassemble(Object value) throws HibernateException { return (Serializable) value; } public Object assemble(Serializable cached, Object owner) throws HibernateException { return cached; } public Object replace(Object original, Object target, Object owner) throws HibernateException { return original; } public boolean equals(Object x, Object y) throws HibernateException { return x == y || !(x == null || y == null) && x.equals(y); } public int hashCode(Object x) throws HibernateException { return x.hashCode(); } public Object nullSafeGet(ResultSet rs, String[] names, Object owner) throws HibernateException, SQLException { Date sqlDate = rs.getDate(names[0]); if (rs.wasNull()) { return null; } return new LocalDate(sqlDate.getTime()); } public void nullSafeSet(PreparedStatement st, Object value, int index) throws HibernateException, SQLException { if (value == null) { st.setNull(index, Types.DATE); } else { LocalDate localDate = (LocalDate) value; Date sqlDate = new Date(localDate.toDateMidnight().getMillis()); st.setDate(index, sqlDate); } } public String objectToSQLString(Object value, Dialect dialect) throws Exception { LocalDate localDate = (LocalDate) value; return localDate.toString(); } }