org.hibernate.type.TimestampType.java Source code

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Here is the source code for org.hibernate.type.TimestampType.java

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/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * License: GNU Lesser General Public License (LGPL), version 2.1 or later.
 * See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
 */
package org.hibernate.type;

import java.sql.Timestamp;
import java.util.Comparator;
import java.util.Date;

import org.hibernate.HibernateException;
import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.type.descriptor.java.JdbcTimestampTypeDescriptor;
import org.hibernate.type.descriptor.sql.TimestampTypeDescriptor;

/**
 * A type that maps between {@link java.sql.Types#TIMESTAMP TIMESTAMP} and {@link java.sql.Timestamp}
 *
 * @author Gavin King
 * @author Steve Ebersole
 */
public class TimestampType extends AbstractSingleColumnStandardBasicType<Date>
        implements VersionType<Date>, LiteralType<Date> {

    public static final TimestampType INSTANCE = new TimestampType();

    public TimestampType() {
        super(TimestampTypeDescriptor.INSTANCE, JdbcTimestampTypeDescriptor.INSTANCE);
    }

    @Override
    public String getName() {
        return "timestamp";
    }

    @Override
    public String[] getRegistrationKeys() {
        return new String[] { getName(), Timestamp.class.getName(), java.util.Date.class.getName() };
    }

    @Override
    public Date next(Date current, SharedSessionContractImplementor session) {
        return seed(session);
    }

    @Override
    public Date seed(SharedSessionContractImplementor session) {
        return new Timestamp(System.currentTimeMillis());
    }

    @Override
    public Comparator<Date> getComparator() {
        return getJavaTypeDescriptor().getComparator();
    }

    @Override
    public String objectToSQLString(Date value, Dialect dialect) throws Exception {
        final Timestamp ts = Timestamp.class.isInstance(value) ? (Timestamp) value : new Timestamp(value.getTime());
        // TODO : use JDBC date literal escape syntax? -> {d 'date-string'} in yyyy-mm-dd hh:mm:ss[.f...] format
        return StringType.INSTANCE.objectToSQLString(ts.toString(), dialect);
    }

    @Override
    public Date fromStringValue(String xml) throws HibernateException {
        return fromString(xml);
    }
}