/* This file is part of VoltDB.
* Copyright (C) 2008-2010 VoltDB L.L.C.
*
* 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
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*/
package org.voltdb.benchmark.dedupe.procedures;
import java.util.Calendar;
import java.util.TimeZone;
import org.voltdb.ProcInfo;
import org.voltdb.SQLStmt;
import org.voltdb.VoltProcedure;
import org.voltdb.VoltTable;
import org.voltdb.VoltTableRow;
import org.voltdb.VoltType;
@ProcInfo(
partitionInfo = "ARCHIVED.COLUMN1: 0",
singlePartition = true
)
public class Delete extends VoltProcedure {
// grab <x> archived rows for deletion
public final SQLStmt getArchived = new SQLStmt("select column1, column2, column3, column4, checktime from archived where checktime < ? order by checktime, column1, column2, column3, column4 limit ?;");
// delete an archived row
public final SQLStmt deleteArchived = new SQLStmt("delete from archived where column1 = ? and column2 = ? and column3 = ? and column4 = ? and checktime = ?;");
private final TimeZone tz = TimeZone.getTimeZone("US/Eastern");
private final Calendar calBegin = Calendar.getInstance(tz);
public VoltTable[] run(
long partitionId,
long numDeletes,
long called_time_milliseconds
) {
calBegin.setTimeInMillis(called_time_milliseconds);
calBegin.set(Calendar.HOUR_OF_DAY, 0);
calBegin.set(Calendar.MINUTE, 0);
calBegin.set(Calendar.SECOND, 0);
calBegin.set(Calendar.MILLISECOND, 0);
long timeStartOfDay = calBegin.getTimeInMillis();
voltQueueSQL(getArchived, timeStartOfDay, numDeletes);
VoltTable results1[] = voltExecuteSQL();
int rowCount = results1[0].getRowCount();
int sqlStatements = 0;
if (rowCount > 0) {
// delete rows
for (int ii = 0; ii < rowCount; ii++) {
VoltTableRow row = results1[0].fetchRow(ii);
long column1 = row.getLong(0);
long column2 = row.getLong(1);
long column3 = row.getLong(2);
long column4 = row.getLong(3);
long checkTimeLong = row.getLong(4);
voltQueueSQL(deleteArchived, column1, column2, column3, column4, checkTimeLong);
sqlStatements++;
if (sqlStatements > 900) {
// limit of 1000 sql statements
voltExecuteSQL();
sqlStatements = 0;
}
}
if (sqlStatements > 0) {
voltExecuteSQL(true);
}
}
VoltTable vtDeleted = new VoltTable(new VoltTable.ColumnInfo("rows_deleted",VoltType.INTEGER));
Object row1[] = new Object[1];
row1[0] = rowCount;
vtDeleted.addRow(row1);
VoltTable vtLoad = new VoltTable(new VoltTable.ColumnInfo("called_time_milliseconds",VoltType.BIGINT));
Object row[] = new Object[1];
row[0] = called_time_milliseconds;
vtLoad.addRow(row);
final VoltTable[] vtReturn = {vtDeleted,vtLoad};
return vtReturn;
}
}