/* This file is part of VoltDB.
* Copyright (C) 2008-2017 VoltDB Inc.
*
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* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
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* 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,
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*/
//
// Returns the heat map data (winning contestant by state) for display on nthe Live Statistics dashboard.
//
package voter;
import java.util.ArrayList;
import org.voltdb.ProcInfo;
import org.voltdb.SQLStmt;
import org.voltdb.VoltProcedure;
import org.voltdb.VoltTable;
import org.voltdb.VoltType;
/**
* This procedure returns two VoltTables as results. The first is a list of states,
* the contestant numbers of the winner in that state and the total number of votes for that
* contestant in that state. The second is a table of contestants and all votes
* for that contestant globally.
*/
public class GetStateHeatmap extends VoltProcedure {
public final SQLStmt stateHeatMap = new SQLStmt(
" SELECT state" +
" , contestant_number" +
" , num_votes" +
" FROM ( SELECT state" +
" , contestant_number" +
" , num_votes" +
" , RANK() OVER ( PARTITION by state " +
" ORDER BY num_votes DESC ) AS vrank" +
" FROM v_votes_by_contestant_number_state ) AS sub" +
" WHERE sub.vrank = 1;");
public final SQLStmt contestantTotals = new SQLStmt(" SELECT contestant_number" +
" , SUM(num_votes)" +
" FROM v_votes_by_contestant_number_state" +
" GROUP BY contestant_number;");
public VoltTable[] run() {
voltQueueSQL(stateHeatMap);
voltQueueSQL(contestantTotals);
VoltTable[] result = voltExecuteSQL();
return result;
}
}