org.hibernate.type.LongType.java Source code

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Here is the source code for org.hibernate.type.LongType.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.io.Serializable;
import java.util.Comparator;

import org.hibernate.dialect.Dialect;
import org.hibernate.engine.spi.SharedSessionContractImplementor;
import org.hibernate.type.descriptor.java.LongTypeDescriptor;
import org.hibernate.type.descriptor.sql.BigIntTypeDescriptor;

/**
 * A type that maps between {@link java.sql.Types#BIGINT BIGINT} and {@link Long}
 *
 * @author Gavin King
 * @author Steve Ebersole
 */
public class LongType extends AbstractSingleColumnStandardBasicType<Long>
        implements PrimitiveType<Long>, DiscriminatorType<Long>, VersionType<Long> {

    public static final LongType INSTANCE = new LongType();

    private static final Long ZERO = (long) 0;

    public LongType() {
        super(BigIntTypeDescriptor.INSTANCE, LongTypeDescriptor.INSTANCE);
    }

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

    @Override
    public String[] getRegistrationKeys() {
        return new String[] { getName(), long.class.getName(), Long.class.getName() };
    }

    @Override
    public Serializable getDefaultValue() {
        return ZERO;
    }

    @Override
    public Class getPrimitiveClass() {
        return long.class;
    }

    @Override
    public Long stringToObject(String xml) throws Exception {
        return Long.valueOf(xml);
    }

    @Override
    public Long next(Long current, SharedSessionContractImplementor session) {
        return current + 1L;
    }

    @Override
    public Long seed(SharedSessionContractImplementor session) {
        return ZERO;
    }

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

    @Override
    public String objectToSQLString(Long value, Dialect dialect) throws Exception {
        return value.toString();
    }
}