org.joda.time.contrib.hibernate.PersistentTimeOfDayExact.java Source code

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Here is the source code for org.joda.time.contrib.hibernate.PersistentTimeOfDayExact.java

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/*
 *  Copyright 2001-2012 Stephen Colebourne
 *
 *  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 org.joda.time.contrib.hibernate;

import java.io.Serializable;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Types;

import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.usertype.EnhancedUserType;
import org.joda.time.DateTime;
import org.joda.time.TimeOfDay;

/**
 * Persist {@link org.joda.time.TimeOfDay} via hibernate.
 * This uses a simple integer to store the time as milliseconds since 1970-1-1.
 * The milliseconds will survive.
 * 
 * @author Mario Ivankovits (mario@ops.co.at)
 */
public class PersistentTimeOfDayExact implements EnhancedUserType, Serializable {

    private final DateTime timeBase = new DateTime(1970, 1, 1, 0, 0, 0, 0);

    public static final PersistentTimeOfDayExact INSTANCE = new PersistentTimeOfDayExact();

    private static final int[] SQL_TYPES = new int[] { Types.INTEGER, };

    public int[] sqlTypes() {
        return SQL_TYPES;
    }

    public Class returnedClass() {
        return TimeOfDay.class;
    }

    public boolean equals(Object x, Object y) throws HibernateException {
        if (x == y) {
            return true;
        }
        if (x == null || y == null) {
            return false;
        }
        TimeOfDay dtx = (TimeOfDay) x;
        TimeOfDay dty = (TimeOfDay) y;

        return dtx.equals(dty);
    }

    public int hashCode(Object object) throws HibernateException {
        return object.hashCode();
    }

    public Object nullSafeGet(ResultSet rs, String[] names, SessionImplementor session, Object owner)
            throws HibernateException, SQLException {
        int value = rs.getInt(names[0]);
        if (rs.wasNull()) {
            return null;
        }
        return new TimeOfDay(value);
    }

    public void nullSafeSet(PreparedStatement statement, Object value, int index, SessionImplementor session)
            throws HibernateException, SQLException {
        if (value == null) {
            statement.setNull(index, SQL_TYPES[0]);
        } else {
            statement.setInt(index, (int) ((TimeOfDay) value).toDateTime(timeBase).getMillis());
        }
    }

    public Object deepCopy(Object value) throws HibernateException {
        return value;
    }

    public boolean isMutable() {
        return false;
    }

    public Serializable disassemble(Object value) throws HibernateException {
        return (Serializable) value;
    }

    public Object assemble(Serializable cached, Object value) throws HibernateException {
        return cached;
    }

    public Object replace(Object original, Object target, Object owner) throws HibernateException {
        return original;
    }

    public String objectToSQLString(Object object) {
        throw new UnsupportedOperationException();
    }

    public String toXMLString(Object object) {
        return object.toString();
    }

    public Object fromXMLString(String string) {
        return new TimeOfDay(string);
    }

}