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/* Copyright (C) 2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/**
* @file SQLDescribeColTest.cpp
*/
#include <common.hpp>
using namespace std;
#define DC_Column_NAME_LEN 50
#define DC_MESSAGE_LENGTH 200
SQLHSTMT DC_hstmt;
SQLHDBC DC_hdbc;
SQLHENV DC_henv;
SQLHDESC DC_hdesc;
void DescribeCol_DisplayError(SQLSMALLINT DC_HandleType,
SQLHSTMT DC_InputHandle);
/**
* Test to retrieve basic result data set metadata information
* (specifically, column name, SQL data type, column size, decimal
* precision, and nullability) for a specified column in a result
* data set
* -# No prepared or executed statement when executing
* -# ColumnNumber is less than 1
* -# ColumnNumber is greater than the value of the TOP_LEVEL_COUNT field of IRD
* @return Zero, if test succeeded
*/
int SQLDescribeColTest()
{
SQLCHAR SQLStmt [120];
SQLRETURN retcode;
SQLCHAR ColumnName[DC_Column_NAME_LEN];
SQLSMALLINT NameLength, DataTypePtr, DecimalDigitsPtr, NullablePtr;
SQLUINTEGER ColumnSizePtr;
ndbout << "Start SQLDescribeCol Test " << endl;
//******************************************************************
//** Test1 **
//** There is no prepared or executed statement associated with **
//** StatementHandle **
//******************************************************************
retcode = SQLDescribeCol(DC_hstmt,
(SQLUSMALLINT)1,
ColumnName,
sizeof(ColumnName),
&NameLength,
&DataTypePtr,
&ColumnSizePtr,
&DecimalDigitsPtr,
&NullablePtr);
if (retcode == SQL_ERROR || retcode == SQL_SUCCESS_WITH_INFO)
DescribeCol_DisplayError(SQL_HANDLE_STMT, DC_hstmt);
//************************************
//** Allocate An Environment Handle **
//************************************
retcode = SQLAllocHandle(SQL_HANDLE_ENV,
SQL_NULL_HANDLE,
&DC_henv);
if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
ndbout << "Allocated an environment Handle!" << endl;
//*********************************************
//** Set the ODBC application Version to 3.x **
//*********************************************
retcode = SQLSetEnvAttr(DC_henv,
SQL_ATTR_ODBC_VERSION,
(SQLPOINTER) SQL_OV_ODBC3,
SQL_IS_UINTEGER);
if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
ndbout << "Set the ODBC application Version to 3.x!" << endl;
//**********************************
//** Allocate A Connection Handle **
//**********************************
retcode = SQLAllocHandle(SQL_HANDLE_DBC,
DC_henv,
&DC_hdbc);
if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
ndbout << "Allocated a connection Handle!" << endl;
// *******************
// ** Connect to DB **
// *******************
retcode = SQLConnect(DC_hdbc,
(SQLCHAR *) connectString(),
SQL_NTS,
(SQLCHAR *) "",
SQL_NTS,
(SQLCHAR *) "",
SQL_NTS);
if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
ndbout << "Connected to DB : OK!" << endl;
else
{
ndbout << "Failure to Connect DB!" << endl;
return NDBT_FAILED;
}
//*******************************
//** Allocate statement handle **
//*******************************
retcode = SQLAllocHandle(SQL_HANDLE_STMT,
DC_hdbc,
&DC_hstmt);
if(retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
ndbout << "Allocated a statement handle!" << endl;
//************************
//** Define a statement **
//************************
strcpy((char *) SQLStmt,
"SELECT * FROM Customers");
//***********************************************
//** Prepare and Execute the SQL statement **
//***********************************************
retcode = SQLExecDirect(DC_hstmt,
SQLStmt,
SQL_NTS);
if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO) {
//*********************************
//** ColumnNumber is from 1 to 4 **
//*********************************
ndbout << endl << "ColumnNumber is from 1 to 4" << endl;
for (int ii = 1; ii <= 4; ii++)
{
retcode = SQLDescribeCol(DC_hstmt,
ii,
ColumnName,
sizeof(ColumnName),
&NameLength,
&DataTypePtr,
&ColumnSizePtr,
&DecimalDigitsPtr,
&NullablePtr);
if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
ndbout << "Column Name = " << (char *)ColumnName << endl;
}
//*********************************
//** Test2 **
//** ColumnNumber is less than 1 **
//*********************************
retcode = SQLDescribeCol(DC_hstmt,
(SQLUSMALLINT)-1,
ColumnName,
sizeof(ColumnName),
&NameLength,
&DataTypePtr,
&ColumnSizePtr,
&DecimalDigitsPtr,
&NullablePtr);
if (retcode == SQL_ERROR || retcode == SQL_SUCCESS_WITH_INFO)
ndbout << endl << "ColumnNumber is less than 1" << endl;
DescribeCol_DisplayError(SQL_HANDLE_STMT, DC_hstmt);
//*********************************************************************
//** Test3 **
//** ColumnNumber is greater than N(the value of the TOP_LEVEL_COUNT **
//** field of IRD) **
//*********************************************************************
ndbout << endl <<"ColumnNumber is greater than N(the value"
<< "of the TOP_LEVEL_COUNTfield of IRD)" << endl;
retcode = SQLDescribeCol(DC_hstmt,
(SQLUSMALLINT)1045,
ColumnName,
sizeof(ColumnName),
&NameLength,
&DataTypePtr,
&ColumnSizePtr,
&DecimalDigitsPtr,
&NullablePtr);
if (retcode == SQL_ERROR || retcode == SQL_SUCCESS_WITH_INFO)
DescribeCol_DisplayError(SQL_HANDLE_STMT, DC_hstmt);
}
// *********************************
// ** Disconnect and Free Handles **
// *********************************
SQLDisconnect(DC_hdbc);
SQLFreeHandle(SQL_HANDLE_STMT, DC_hstmt);
SQLFreeHandle(SQL_HANDLE_DBC, DC_hdbc);
SQLFreeHandle(SQL_HANDLE_ENV, DC_henv);
return NDBT_OK;
}
void DescribeCol_DisplayError(SQLSMALLINT DC_HandleType,
SQLHSTMT DC_InputHandle)
{
SQLCHAR Sqlstate[5], Msg[DC_MESSAGE_LENGTH];
SQLINTEGER NativeError;
SQLSMALLINT DC_i, MsgLen;
SQLRETURN SQLSTATEs;
DC_i = 1;
while ((SQLSTATEs = SQLGetDiagRec(DC_HandleType,
DC_InputHandle,
DC_i,
Sqlstate,
&NativeError,
Msg,
sizeof(Msg),
&MsgLen))
!= SQL_NO_DATA) {
ndbout << "the HandleType is:" << DC_HandleType << endl;
ndbout << "the InputHandle is :" << (long)DC_InputHandle << endl;
ndbout << "the return message is:" << (char *)Msg << endl;
ndbout << "the output state is:" << (char *)Sqlstate << endl;
DC_i ++;
break;
}
}
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