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/*****************************************************************************
* SQLFetchScroll
*
**********************************************************************
*
* This code was created by Peter Harvey (mostly during Christmas 98/99).
* This code is LGPL. Please ensure that this message remains in future
* distributions and uses of this code (thats about all I get out of it).
* - Peter Harvey pharvey@codebydesign.com
*
*****************************************************************************/
#include "driver.h"
SQLRETURN SQLFetchScroll( SQLHSTMT hDrvStmt,
SQLSMALLINT nOrientation,
SQLINTEGER nOffset )
{
HDRVSTMT hStmt = (HDRVSTMT)hDrvStmt;
int nColumn = -1;
COLUMNHDR *pColumnHeader;
/* SANITY CHECKS */
if ( NULL == hStmt )
return SQL_INVALID_HANDLE;
sprintf( hStmt->szSqlMsg, "hStmt = $%08lX", hStmt );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, hStmt->szSqlMsg );
/* how much do we want to move */
switch ( nOrientation )
{
case SQL_FETCH_NEXT:
if ( hStmt->hStmtExtras->nRow >= hStmt->hStmtExtras->nRows )
return SQL_NO_DATA;
hStmt->hStmtExtras->nRow++;
break;
case SQL_FETCH_PRIOR:
if ( hStmt->hStmtExtras->nRow == 0 )
return SQL_NO_DATA;
hStmt->hStmtExtras->nRow--;
break;
case SQL_FETCH_FIRST:
hStmt->hStmtExtras->nRow = 0;
break;
case SQL_FETCH_LAST:
hStmt->hStmtExtras->nRow = hStmt->hStmtExtras->nRows-1;
break;
case SQL_FETCH_ABSOLUTE:
if ( nOffset < 0 || nOffset >= hStmt->hStmtExtras->nRows )
return SQL_NO_DATA;
hStmt->hStmtExtras->nRow = nOffset;
break;
case SQL_FETCH_RELATIVE:
if ( hStmt->hStmtExtras->nRow+nOffset < 0 || hStmt->hStmtExtras->nRow+nOffset >= hStmt->hStmtExtras->nRows )
return SQL_NO_DATA;
hStmt->hStmtExtras->nRow += nOffset;
break;
case SQL_FETCH_BOOKMARK:
return SQL_ERROR;
break;
default:
return SQL_ERROR;
}
/************************
* transfer bound column values to bound storage as required
************************/
for ( nColumn=1; nColumn <= hStmt->hStmtExtras->nCols; nColumn++ )
{
pColumnHeader = (COLUMNHDR*)(hStmt->hStmtExtras->aResults)[nColumn];
if ( pColumnHeader->pTargetValue != NULL )
{
if ( _GetData( hDrvStmt,
nColumn,
pColumnHeader->nTargetType,
pColumnHeader->pTargetValue,
pColumnHeader->nTargetValueMax,
pColumnHeader->pnLengthOrIndicator ) != SQL_SUCCESS )
{
sprintf( hStmt->szSqlMsg, "SQL_ERROR Failed to get data for column %d", nColumn );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, hStmt->szSqlMsg );
return SQL_ERROR;
}
}
}
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_INFO, LOG_INFO, "SQL_SUCCESS" );
return SQL_SUCCESS;
}
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