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/**********************************************************************
* SQLTables
*
**********************************************************************
*
* 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"
enum nSQLTables
{
TABLE_CAT = 1,
TABLE_SCHEM,
TABLE_NAME,
TABLE_TYPE,
REMARKS,
COL_MAX
};
m_field aSQLTables[] =
{
"", "", 0, 0, 0, /* keep things 1 based */
"TABLE_CAT", "sys", CHAR_TYPE, 50, 0,
"TABLE_SCHEM", "sys", CHAR_TYPE, 50, 0,
"TABLE_NAME", "sys", CHAR_TYPE, 50, 0,
"TABLE_TYPE", "sys", CHAR_TYPE, 50, 0,
"REMARKS", "sys", CHAR_TYPE, 50, 0
};
SQLRETURN SQLTables( SQLHSTMT hDrvStmt,
SQLCHAR *szCatalogName,
SQLSMALLINT nCatalogNameLength,
SQLCHAR *szSchemaName,
SQLSMALLINT nSchemaNameLength,
SQLCHAR *szTableName,
SQLSMALLINT nTableNameLength,
SQLCHAR *szTableType,
SQLSMALLINT nTableTypeLength )
{
HDRVSTMT hStmt = (HDRVSTMT)hDrvStmt;
m_result *pResults; /* mSQL DATA */
m_field *pField; /* mSQL field */
COLUMNHDR *pColumnHeader;
m_row rowResult; /* mSQL ROW */
int nColumn;
long nResultMemory;
/* SANITY CHECKS */
if( hStmt == SQL_NULL_HSTMT )
return SQL_INVALID_HANDLE;
sprintf( hStmt->szSqlMsg, "hStmt = $%08lX", hStmt );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_WARNING, LOG_WARNING, hStmt->szSqlMsg );
/**************************
* 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 tables
************************/
pResults = msqlListTables( ((HDRVDBC)hStmt->hDbc)->hDbcExtras->hServer );
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;
}
/**************************
* 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 = msqlNumRows( pResults );
hStmt->hStmtExtras->nRow = 0;
nResultMemory = sizeof(char*) * (hStmt->hStmtExtras->nRows+1) * (hStmt->hStmtExtras->nCols+1);
hStmt->hStmtExtras->aResults = malloc( nResultMemory );
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, &(aSQLTables[nColumn]) );
}
/************************
* gather data (save col 0 for bookmarks)
************************/
hStmt->hStmtExtras->nRow = 0;
while ( (rowResult = msqlFetchRow( pResults )) != NULL )
{
hStmt->hStmtExtras->nRow++;
msqlFieldSeek( pResults, 0 );
for ( nColumn = 1; nColumn <= hStmt->hStmtExtras->nCols; nColumn++ )
{
switch ( nColumn )
{
case TABLE_NAME:
(hStmt->hStmtExtras->aResults)[hStmt->hStmtExtras->nRow*hStmt->hStmtExtras->nCols+nColumn] = (char *)strdup( rowResult[0] );
break;
default:
(hStmt->hStmtExtras->aResults)[hStmt->hStmtExtras->nRow*hStmt->hStmtExtras->nCols+nColumn] = NULL;
}
}
}
hStmt->hStmtExtras->nRow = 0;
/**************************
* free the snapshot
**************************/
msqlFreeResult( pResults );
logPushMsg( hStmt->hLog, __FILE__, __FILE__, __LINE__, LOG_INFO, LOG_INFO, "SQL_SUCCESS" );
return SQL_SUCCESS;
}
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