/*
* Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software;Designed and Developed mainly by many Chinese
* opensource volunteers. you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 2 only, as published by the
* Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Any questions about this component can be directed to it's project Web address
* https://code.google.com/p/opencloudb/.
*
*/
package org.opencloudb.mpp;
import org.opencloudb.net.mysql.RowDataPacket;
public class RangRowDataPacketSorter extends RowDataPacketSorter {
public RangRowDataPacketSorter(OrderCol[] orderCols) {
super(orderCols);
}
public boolean ascDesc(int byColumnIndex) {
if (this.orderCols[byColumnIndex].orderType == OrderCol.COL_ORDER_TYPE_ASC) {// 升序
return true;
}
return false;
}
public int compareRowData(RowDataPacket l, RowDataPacket r, int byColumnIndex) {
byte[] left = l.fieldValues.get(this.orderCols[byColumnIndex].colMeta.colIndex);
byte[] right = r.fieldValues.get(this.orderCols[byColumnIndex].colMeta.colIndex);
return compareObject(left, right, this.orderCols[byColumnIndex]);
}
}