/***************************************************************************
* Copyright (C) 2013 by H-Store Project *
* Brown University *
* Massachusetts Institute of Technology *
* Yale University *
* *
* Permission is hereby granted, free of charge, to any person obtaining *
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* 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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package edu.brown.benchmark.smallbank.procedures;
import org.voltdb.ProcInfo;
import org.voltdb.SQLStmt;
import org.voltdb.VoltProcedure;
import org.voltdb.VoltTable;
import edu.brown.benchmark.smallbank.SmallBankConstants;
/**
* WriteCheck Procedure
* Original version by Mohammad Alomari and Michael Cahill
* @author pavlo
*/
@ProcInfo (
partitionParam=0
)
public class WriteCheck extends VoltProcedure {
// 2013-05-05
// In the original version of the benchmark, this is suppose to be a look up
// on the customer's name. We don't have fast implementation of replicated
// secondary indexes, so we'll just ignore that part for now.
public final SQLStmt GetAccount = new SQLStmt(
"SELECT * FROM " + SmallBankConstants.TABLENAME_ACCOUNTS +
" WHERE custid = ?"
);
public final SQLStmt GetSavingsBalance = new SQLStmt(
"SELECT bal FROM " + SmallBankConstants.TABLENAME_SAVINGS +
" WHERE custid = ?"
);
public final SQLStmt GetCheckingBalance = new SQLStmt(
"SELECT bal FROM " + SmallBankConstants.TABLENAME_CHECKING +
" WHERE custid = ?"
);
public final SQLStmt UpdateCheckingBalance = new SQLStmt(
"UPDATE " + SmallBankConstants.TABLENAME_CHECKING +
" SET bal = bal - ? " +
" WHERE custid = ?"
);
public VoltTable run(long acctId, double amount) {
voltQueueSQL(GetAccount, acctId);
VoltTable results[] = voltExecuteSQL();
if (results[0].getRowCount() != 1) {
String msg = "Invalid account name '" + acctId + "'";
throw new VoltAbortException(msg);
}
// long acctId = results[0].asScalarLong();
voltQueueSQL(GetSavingsBalance, acctId);
voltQueueSQL(GetCheckingBalance, acctId);
results = voltExecuteSQL();
if (results[0].getRowCount() != 1) {
String msg = String.format("No %s for customer #%d",
SmallBankConstants.TABLENAME_SAVINGS,
acctId);
throw new VoltAbortException(msg);
}
if (results[1].getRowCount() != 1) {
String msg = String.format("No %s for customer #%d",
SmallBankConstants.TABLENAME_CHECKING,
acctId);
throw new VoltAbortException(msg);
}
results[0].advanceRow();
results[1].advanceRow();
double total = results[0].getDouble(0) + results[1].getDouble(0);
if (total < amount) {
voltQueueSQL(UpdateCheckingBalance, amount - 1, acctId);
} else {
voltQueueSQL(UpdateCheckingBalance, amount, acctId);
}
results = voltExecuteSQL(true);
return (results[0]);
}
}