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Hibernate O/RM implementation of the Jakarta Persistence specification

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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 .
 */
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.IntegerTypeDescriptor;

/**
 * A type that maps between {@link java.sql.Types#INTEGER INTEGER} and @link Integer}
 *
 * @author Gavin King
 * @author Steve Ebersole
 */
public class IntegerType extends AbstractSingleColumnStandardBasicType
		implements PrimitiveType, DiscriminatorType, VersionType {

	public static final IntegerType INSTANCE = new IntegerType();

	public static final Integer ZERO = 0;

	public IntegerType() {
		super( org.hibernate.type.descriptor.sql.IntegerTypeDescriptor.INSTANCE, IntegerTypeDescriptor.INSTANCE );
	}

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

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

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

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

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

	@Override
	public Integer stringToObject(String xml) {
		return fromString( xml );
	}

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

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

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