/* This file is part of VoltDB.
* Copyright (C) 2008-2017 VoltDB Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package metrocard;
import java.util.Date;
import org.voltdb.SQLStmt;
import org.voltdb.VoltProcedure;
import org.voltdb.VoltTable;
public class GetBusiestStationInLastMinute extends VoltProcedure {
public final SQLStmt qry = new SQLStmt(
"SELECT s.name, SUM(v.activities) as swipes, SUM(v.entries) as entries "+
"FROM secondly_entries_by_station v "+
"INNER JOIN stations s ON s.station_id = v.station_id "+
"WHERE "+
" v.second >= ? "+
"GROUP BY s.name "+
"ORDER BY swipes DESC;");
public VoltTable[] run() throws VoltAbortException {
// 6 seconds ago
Date date = new Date(getTransactionTime().getTime() - 60000);
voltQueueSQL(qry, date);
return voltExecuteSQL(true);
}
}