SQLRETURN _Execute( SQLHSTMT hDrvStmt )
{
HDRVSTMT hStmt = (HDRVSTMT)hDrvStmt;
int nColumn;
int nCols;
int nRow;
m_result *pResults; /* mSQL DATA */
m_row rowResult; /* mSQL ROW */
m_field *pField; /* mSQL COL HDR */
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 );
if( hStmt->pszQuery == NULL )
{
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, "SQL_ERROR No prepared statement" );
return SQL_ERROR;
}
/**************************
* Free any current results
**************************/
if ( hStmt->hStmtExtras->aResults )
_FreeResults( hStmt->hStmtExtras );
/**************************
* send prepared query to server
**************************/
if ( (hStmt->hStmtExtras->nRows = msqlQuery( ((HDRVDBC)hStmt->hDbc)->hDbcExtras->hServer, hStmt->pszQuery )) == -1 )
{
sprintf( hStmt->szSqlMsg, "SQL_ERROR Query failed. %s", msqlErrMsg );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, hStmt->szSqlMsg );
return SQL_ERROR;
}
/**************************
* snapshot our results (assume no results means UPDATE, DELETE or INSERT
**************************/
pResults = msqlStoreResult();
if ( !pResults )
return SQL_SUCCESS;
/**************************
* allocate memory for columns headers and result data (row 0 is column header while col 0 is reserved for bookmarks)
**************************/
hStmt->hStmtExtras->nRows = msqlNumRows( pResults );
hStmt->hStmtExtras->nCols = msqlNumFields( pResults );
hStmt->hStmtExtras->aResults = malloc( sizeof(char*) * (hStmt->hStmtExtras->nRows+1) * (hStmt->hStmtExtras->nCols+1) );
if ( hStmt->hStmtExtras->aResults == NULL )
{
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, "Not enough memory. (malloc failed)" );
hStmt->hStmtExtras->nRows = 0;
hStmt->hStmtExtras->nCols = 0;
msqlFreeResult( pResults );
return SQL_ERROR;
}
memset( hStmt->hStmtExtras->aResults, 0, sizeof(char*) * (hStmt->hStmtExtras->nRows+1) * (hStmt->hStmtExtras->nCols+1) );
/**************************
* gather column header information (save col 0 for bookmarks)
**************************/
for ( nColumn = 1; nColumn <= hStmt->hStmtExtras->nCols; nColumn++ )
{
pField = msqlFetchField( pResults );
(hStmt->hStmtExtras->aResults)[nColumn] = malloc( sizeof(COLUMNHDR) );
memset( (hStmt->hStmtExtras->aResults)[nColumn], 0, sizeof(COLUMNHDR) );
pColumnHeader = (COLUMNHDR*)(hStmt->hStmtExtras->aResults)[nColumn];
_NativeToSQLColumnHeader( pColumnHeader, pField );
}
/************************
* gather data (save col 0 for bookmarks)
************************/
nCols = hStmt->hStmtExtras->nCols;
nRow = 0;
while ( (rowResult = msqlFetchRow( pResults )) != NULL )
{
nRow++;
msqlFieldSeek( pResults, 0 );
for ( nColumn=1; nColumn <= nCols; nColumn++ )
{
if ( rowResult[nColumn-1] )
(hStmt->hStmtExtras->aResults)[nRow*nCols+nColumn] = (char *)strdup( rowResult[nColumn-1] );
}
}
hStmt->hStmtExtras->nRow = 0;
/**************************
* free the snapshot
**************************/
msqlFreeResult( pResults );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_INFO, LOG_INFO, "SQL_SUCCESS" );
return SQL_SUCCESS;
}
SQLRETURN SQLColumns( SQLHSTMT hDrvStmt,
SQLCHAR *szCatalogName,
SQLSMALLINT nCatalogNameLength,
SQLCHAR *szSchemaName,
SQLSMALLINT nSchemaNameLength,
SQLCHAR *szTableName,
SQLSMALLINT nTableNameLength,
SQLCHAR *szColumnName,
SQLSMALLINT nColumnNameLength )
{
HDRVSTMT hStmt = (HDRVSTMT)hDrvStmt;
m_result *pResults; /* mSQL DATA */
m_field *pField; /* mSQL field */
COLUMNHDR *pColumnHeader;
int nColumn;
long nCols;
long nRow;
long nCurRow;
char szBuffer[101];
int nIndexColumns = 0;
/* 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 );
if ( szTableName == NULL || szTableName[0] == '\0' )
{
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, "SQL_ERROR Must supply a valid table name" );
return SQL_ERROR;
}
/**************************
* close any existing result
**************************/
if ( hStmt->hStmtExtras->aResults )
_FreeResults( hStmt->hStmtExtras );
if ( hStmt->pszQuery != NULL )
free( hStmt->pszQuery );
hStmt->pszQuery = NULL;
/************************
* generate a result set listing columns (these will be our rows)
************************/
pResults = msqlListFields( ((HDRVDBC)hStmt->hDbc)->hDbcExtras->hServer, szTableName );
if ( pResults == NULL )
{
sprintf( hStmt->szSqlMsg, "SQL_ERROR Query failed. %s", msqlErrMsg );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, hStmt->szSqlMsg );
return SQL_ERROR;
}
/************************
* how many columns are indexs?
************************/
nIndexColumns = 0;
while ( pField = msqlFetchField( pResults ) )
{
if ( pField->type == IDX_TYPE)
nIndexColumns++;
}
msqlFieldSeek( pResults, 0 );
/**************************
* allocate memory for columns headers and result data (row 0 is column header while col 0 is reserved for bookmarks)
**************************/
hStmt->hStmtExtras->nCols = COL_MAX-1;
hStmt->hStmtExtras->nRows = msqlNumFields( pResults ) - nIndexColumns;
hStmt->hStmtExtras->nRow = 0;
hStmt->hStmtExtras->aResults = malloc( sizeof(char*) * (hStmt->hStmtExtras->nRows+1) * (hStmt->hStmtExtras->nCols+1) );
memset( hStmt->hStmtExtras->aResults, 0, sizeof(char*) * (hStmt->hStmtExtras->nRows+1) * (hStmt->hStmtExtras->nCols+1) );
if ( hStmt->hStmtExtras->aResults == NULL )
{
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, "Not enough memory. (malloc failed)" );
hStmt->hStmtExtras->nRows = 0;
hStmt->hStmtExtras->nCols = 0;
msqlFreeResult( pResults );
return SQL_ERROR;
}
/**************************
* gather column header information (save col 0 for bookmarks)
**************************/
for ( nColumn = 1; nColumn < COL_MAX; nColumn++ )
{
(hStmt->hStmtExtras->aResults)[nColumn] = malloc( sizeof(COLUMNHDR) );
pColumnHeader = (COLUMNHDR*)(hStmt->hStmtExtras->aResults)[nColumn];
memset( pColumnHeader, 0, sizeof(COLUMNHDR) );
_NativeToSQLColumnHeader( pColumnHeader, &(aSQLColumns[nColumn]) );
}
/************************
* gather data (save col 0 for bookmarks and factor out index columns)
************************/
nCols = hStmt->hStmtExtras->nCols;
hStmt->hStmtExtras->nRow = 0;
for ( nCurRow = 1; nCurRow <= msqlNumFields( pResults ); nCurRow++ )
{
pField = msqlFetchField( pResults );
if ( pField->type != IDX_TYPE)
{
hStmt->hStmtExtras->nRow++;
nRow = hStmt->hStmtExtras->nRow;
for ( nColumn = 1; nColumn < COL_MAX; nColumn++ )
{
switch ( nColumn )
{
case TABLE_NAME:
(hStmt->hStmtExtras->aResults)[nRow*nCols+nColumn] = (char*)strdup( szTableName );
break;
case COLUMN_NAME:
(hStmt->hStmtExtras->aResults)[nRow*nCols+nColumn] = (char*)strdup( pField->name );
break;
case TYPE_NAME:
(hStmt->hStmtExtras->aResults)[nRow*nCols+nColumn] = (char*)strdup( msqlTypeNames[pField->type] );
break;
case COLUMN_SIZE:
sprintf( szBuffer, "%d", pField->length );
(hStmt->hStmtExtras->aResults)[nRow*nCols+nColumn] = (char*)strdup( szBuffer );
break;
case NULLABLE:
(hStmt->hStmtExtras->aResults)[nRow*nCols+nColumn] = (char *)strdup( IS_NOT_NULL( pField->flags ) ? "0" : "1" );
break;
default:
(hStmt->hStmtExtras->aResults)[nRow*nCols+nColumn] = NULL;
} /* switch nColumn */
} /* for nColumn */
} /* if */
} /* for nRow */
hStmt->hStmtExtras->nRow = 0;
/**************************
* free the snapshot
**************************/
msqlFreeResult( pResults );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_INFO, LOG_INFO, "SQL_SUCCESS" );
return SQL_SUCCESS;
}
