/* 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
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*/
package txnIdSelfCheck.procedures;
import org.voltdb.SQLStmt;
import org.voltdb.VoltProcedure;
import org.voltdb.VoltTable;
import org.voltdb.DeprecatedProcedureAPIAccess;
public class Initialize extends VoltProcedure
{
// Check if the database has already been initialized
public final SQLStmt checkStmt = new SQLStmt("SELECT * FROM replicated ORDER BY rid;");
// Insert into the replicated table
public final SQLStmt insertStmt = new SQLStmt("INSERT INTO replicated VALUES (?, ?, ?, ?);");
public long run() {
voltQueueSQL(checkStmt, EXPECT_ZERO_OR_ONE_ROW);
VoltTable result = voltExecuteSQL()[0];
// if the data is initialized, return the current count
if (result.getRowCount() != 0) {
result.advanceRow();
return result.getLong("rid");
}
// initialize the data using the txnId
@SuppressWarnings("deprecation")
long txnId = DeprecatedProcedureAPIAccess.getVoltPrivateRealTransactionId(this);
long uniqueId = getUniqueId();
voltQueueSQL(insertStmt, EXPECT_SCALAR_MATCH(1), txnId, uniqueId, -1, 0);
voltExecuteSQL(true);
// return the rid
return 0;
}
}