MysqlNativeTypeUtils.java

package com.tesora.dve.db.mysql;

/*
 * #%L
 * Tesora Inc.
 * Database Virtualization Engine
 * %%
 * Copyright (C) 2011 - 2014 Tesora Inc.
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License, version 3,
 * as published by the Free Software Foundation.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Affero General Public License for more details.
 * 
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 * #L%
 */

import com.tesora.dve.db.mysql.MysqlNativeType.MysqlType;
import com.tesora.dve.resultset.ColumnMetadata;

public final class MysqlNativeTypeUtils {

	private MysqlNativeTypeUtils() {
		// no public constructor
	}

	public static boolean isUnsigned(ColumnMetadata columnMetadata, MysqlNativeType mysqlNativeType) {
		// hack to mimic Mysql behaviour
		if (MysqlType.BIT.equals(mysqlNativeType.getMysqlType()))
				return true;
		
		return mysqlNativeType.isUnsignedAttribute() && isUnsigned(columnMetadata);
	}

	public static boolean isUnsigned(ColumnMetadata columnMetadata) {
		return columnMetadata != null && columnMetadata.isUnsigned();
	}
}