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/*
* Test what happens when the transaction is committed while fetching from a
* result set.
*/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "common.h"
int main(int argc, char **argv)
{
int rc;
HSTMT hstmt = SQL_NULL_HSTMT;
int rows;
/****
* Run this test with UseDeclareFetch = 1 and Fetch=1, so that we fetch
* one row at a time. Protocol=-2 is required so that the cursors survives
* the commit.
*/
test_connect_ext("UseDeclareFetch=1;Fetch=1;Protocol=7.4-2");
rc = SQLAllocHandle(SQL_HANDLE_STMT, conn, &hstmt);
if (!SQL_SUCCEEDED(rc))
{
print_diag("failed to allocate stmt handle", SQL_HANDLE_DBC, conn);
exit(1);
}
/* Disable autocommit, and execute a dummy UPDATE to start a transaction */
rc = SQLSetConnectAttr(conn,
SQL_ATTR_AUTOCOMMIT,
(SQLPOINTER)SQL_AUTOCOMMIT_OFF,
SQL_IS_UINTEGER);
CHECK_STMT_RESULT(rc, "SQLSetConnectAttr failed", hstmt);
SQLExecDirect(hstmt, (SQLCHAR *) "update testtbl1 set t = t where id = 123456", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLExecDirect failed", hstmt);
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/**** Start a cursor ****/
/* Prepare a statement */
rc = SQLPrepare(hstmt, (SQLCHAR *) "SELECT * FROM generate_series(1, 5) g ", SQL_NTS);
CHECK_STMT_RESULT(rc, "SQLPrepare failed", hstmt);
/* Execute */
rc = SQLExecute(hstmt);
CHECK_STMT_RESULT(rc, "SQLExecute failed", hstmt);
/* Fetch result */
printf("Result set:\n");
rows = 0;
while(1)
{
rc = SQLFetch(hstmt);
if (rc == SQL_NO_DATA)
break;
if (rc == SQL_SUCCESS)
{
char buf[40];
SQLLEN ind;
rc = SQLGetData(hstmt, 1, SQL_C_CHAR, buf, sizeof(buf), &ind);
if (!SQL_SUCCEEDED(rc))
{
print_diag("SQLGetData failed", SQL_HANDLE_STMT, hstmt);
exit(1);
}
printf("%s", buf);
printf("\n");
}
else
{
print_diag("SQLFetch failed", SQL_HANDLE_STMT, hstmt);
exit(1);
}
/* In the middle of the result set, COMMIT */
if (rows == 2)
{
rc = SQLEndTran(SQL_HANDLE_DBC, conn, SQL_COMMIT);
CHECK_STMT_RESULT(rc, "SQLEndTran failed\n", hstmt);
}
rows++;
}
rc = SQLFreeStmt(hstmt, SQL_CLOSE);
CHECK_STMT_RESULT(rc, "SQLFreeStmt failed", hstmt);
/* Clean up */
test_disconnect();
return 0;
}
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