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[wxWidgets.git] / src / iodbc / execute.c
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-/** Invoke a query 
-       
-    Copyright (C) 1995 by Ke Jin <kejin@empress.com> 
-
-    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; either version 2 of the License, or
-    (at your option) any later version.
-
-    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.
-**/
-
-#include       <../iodbc/iodbc.h>
-
-#include       <../iodbc/isql.h>
-#include       <../iodbc/isqlext.h>
-
-#include        <../iodbc/dlproc.h>
-
-#include       <../iodbc/herr.h>
-#include       <../iodbc/henv.h>
-#include       <../iodbc/hdbc.h>
-#include       <../iodbc/hstmt.h>
-
-#include       <../iodbc/itrace.h>
-
-static void    do_cursoropen(STMT_t FAR* pstmt)
-{
-       RETCODE retcode;
-       SWORD   ncol;
-
-       pstmt->state = en_stmt_executed;
-
-       retcode = SQLNumResultCols( pstmt, &ncol );
-
-       if( retcode == SQL_SUCCESS
-        || retcode == SQL_SUCCESS_WITH_INFO )
-       {
-               if( ncol )
-               {
-                       pstmt->state = en_stmt_cursoropen;
-                       pstmt->cursor_state = en_stmt_cursor_opened;
-               }
-               else
-               {
-                       pstmt->state = en_stmt_executed;
-                       pstmt->cursor_state = en_stmt_cursor_no;
-               }
-       }
-}
-
-RETCODE SQL_API        SQLexecute ( HSTMT hstmt )
+/*
+ *  execute.c
+ *
+ *  $Id$
+ *
+ *  Invoke a query
+ *
+ *  The iODBC driver manager.
+ *  
+ *  Copyright (C) 1995 by Ke Jin <kejin@empress.com> 
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public
+ *  License along with this library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include       "config.h"
+
+#include       "isql.h"
+#include       "isqlext.h"
+
+#include        "dlproc.h"
+
+#include       "herr.h"
+#include       "henv.h"
+#include       "hdbc.h"
+#include       "hstmt.h"
+
+#include       "itrace.h"
+
+static void 
+do_cursoropen (STMT_t FAR * pstmt)
 {
-       STMT_t FAR*     pstmt   = (STMT_t FAR*)hstmt;
-       HPROC           hproc   = SQL_NULL_HPROC;
-       RETCODE         retcode;
+  RETCODE retcode;
+  SWORD ncol;
 
-       int             sqlstat = en_00000;
+  pstmt->state = en_stmt_executed;
 
-       if( hstmt == SQL_NULL_HSTMT 
-        || pstmt->hdbc == SQL_NULL_HDBC )
-       {
-               return SQL_INVALID_HANDLE;
-       } 
+  retcode = SQLNumResultCols (pstmt, &ncol);
 
-       /* check state */
-       if( pstmt->asyn_on == en_NullProc )
+  if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
+    {
+      if (ncol)
        {
-               switch( pstmt->state )
-               {
-                       case en_stmt_allocated:
-                               sqlstat = en_S1010;
-                               break;
-       
-                       case en_stmt_executed:
-                               if( ! pstmt->prep_state )
-                               {
-                                       sqlstat = en_S1010;
-                               }
-                               break;
-       
-                       case en_stmt_cursoropen:
-                               if( ! pstmt->prep_state )
-                               {
-                                       sqlstat = en_S1010;
-                               }
-                               break;
-       
-                       case en_stmt_fetched:
-                       case en_stmt_xfetched:
-                               if( ! pstmt->prep_state )
-                               {
-                                       sqlstat = en_S1010;
-                               }
-                               else
-                               {
-                                       sqlstat = en_24000;
-                               }
-                               break;
-                                       
-                       case en_stmt_needdata:
-                       case en_stmt_mustput:
-                       case en_stmt_canput:
-                               sqlstat = en_S1010;
-                               break;
-       
-                       default:
-                               break;
-               }
+         pstmt->state = en_stmt_cursoropen;
+         pstmt->cursor_state = en_stmt_cursor_opened;
        }
-       else if( pstmt->asyn_on != en_Execute )
+      else
        {
-               sqlstat = en_S1010;
+         pstmt->state = en_stmt_executed;
+         pstmt->cursor_state = en_stmt_cursor_no;
        }
-       
-       if( sqlstat == en_00000 )
-       {
-               hproc = _iodbcdm_getproc( pstmt->hdbc, en_Execute );
-
-               if( hproc == SQL_NULL_HPROC )
-               {
-                       sqlstat = en_IM001;
-               }
-       }
-
-       if( sqlstat != en_00000 )
-       {
-               PUSHSQLERR ( pstmt->herr, sqlstat );
-
-               return SQL_ERROR;
-       }
-       
-       CALL_DRIVER ( pstmt->hdbc, retcode, hproc, 
-               en_Execute, ( pstmt->dhstmt ) )
-                       
-#if 0
-       retcode = hproc ( pstmt->dhstmt );
-#endif
-
-       /* stmt state transition */
-       if( pstmt->asyn_on == en_Execute )
-       {
-               switch ( retcode )
-               {
-                       case SQL_SUCCESS:
-                       case SQL_SUCCESS_WITH_INFO:
-                       case SQL_NEED_DATA:
-                       case SQL_ERROR:
-                               pstmt->asyn_on = en_NullProc;
-                               break;
-
-                       case SQL_STILL_EXECUTING:
-                       default:
-                               return retcode;
-               }
-       }
-
-       switch( pstmt->state )
-       {
-               case en_stmt_prepared:
-                       switch( retcode )
-                       {
-                               case SQL_SUCCESS:
-                               case SQL_SUCCESS_WITH_INFO:
-                                       do_cursoropen(hstmt);
-                                       break;
-
-                               case SQL_NEED_DATA: 
-                                       pstmt->state = en_stmt_needdata;
-                                       pstmt->need_on = en_Execute;
-                                       break;
-
-                               case SQL_STILL_EXECUTING:
-                                       pstmt->asyn_on = en_Execute;
-                                       break;
-
-                               default:
-                                       break;
-                       }
-                       break;
-
-               case en_stmt_executed:
-                       switch( retcode )
-                       {
-                               case SQL_ERROR:
-                                       pstmt->state = en_stmt_allocated;
-                                       pstmt->cursor_state = en_stmt_cursor_no;
-                                       pstmt->prep_state = 0;
-                                       break;
-
-                               case SQL_NEED_DATA:
-                                       pstmt->state = en_stmt_needdata;
-                                       pstmt->need_on = en_Execute;
-                                       break;
-
-                               case SQL_STILL_EXECUTING:
-                                       pstmt->asyn_on = en_Execute;
-                                       break;
-
-                               default:
-                                       break;
-                       }
-                       break;
-
-               default:
-                       break;
-       }
-
-       return retcode;
+    }
 }
 
-RETCODE SQL_API        SQLExecDirect (
-                       HSTMT           hstmt,
-                       UCHAR FAR*      szSqlStr,
-                       SDWORD          cbSqlStr )
-{
-       STMT_t FAR*     pstmt   = (STMT_t FAR*)hstmt;
-       HPROC           hproc   = SQL_NULL_HPROC;
-
-       int             sqlstat = en_00000;
-       RETCODE         retcode = SQL_SUCCESS;
-
-       if( hstmt == SQL_NULL_HSTMT 
-        || pstmt->hdbc == SQL_NULL_HDBC )
-       {
-               return SQL_INVALID_HANDLE;
-       }
-
-       /* check arguments */
-       if( szSqlStr == NULL )
-       {
-               sqlstat = en_S1009;
-       }
-       else if( cbSqlStr < 0 && cbSqlStr != SQL_NTS )
-       {
-               sqlstat = en_S1090;
-       }
-
-       if( sqlstat != en_00000 )
-       {
-               PUSHSQLERR ( pstmt->herr, sqlstat );
-
-               return SQL_ERROR;
-       }
-
-       /* check state */
-       if( pstmt->asyn_on == en_NullProc )
-       {
-               switch ( pstmt->state )
-               {
-                       case en_stmt_fetched:
-                       case en_stmt_xfetched:
-                               sqlstat = en_24000;
-                               break;
-       
-                       case en_stmt_needdata:
-                       case en_stmt_mustput:
-                       case en_stmt_canput:
-                               sqlstat = en_S1010;
-                               break;
-       
-                       default:
-                               break;
-               }
-       }
-       else if( pstmt->asyn_on != en_ExecDirect )
-       {
-               sqlstat = en_S1010;
-       }
-
-       if( sqlstat != en_00000 )
-       {
-               PUSHSQLERR ( pstmt->herr, sqlstat );
-
-               return SQL_ERROR;
-       }
-
-       hproc = _iodbcdm_getproc( pstmt->hdbc, en_ExecDirect);
-
-       if( hproc == SQL_NULL_HPROC )
-       {
-               PUSHSQLERR ( pstmt->herr, en_IM001 );
-
-               return SQL_ERROR;
-       }
-
-       CALL_DRIVER ( pstmt->hdbc, retcode, hproc, en_ExecDirect, (
-                       pstmt->dhstmt, szSqlStr, cbSqlStr) )
-       
-
-#if 0
-       retcode = hproc ( pstmt->dhstmt, szSqlStr, cbSqlStr );
-#endif
-
-       /* stmt state transition */
-       if( pstmt->asyn_on == en_ExecDirect )
-       {
-               switch ( retcode )
-               {
-                       case SQL_SUCCESS:
-                       case SQL_SUCCESS_WITH_INFO:
-                       case SQL_NEED_DATA:
-                       case SQL_ERROR:
-                               pstmt->asyn_on = en_NullProc;
-                               break;
-
-                       case SQL_STILL_EXECUTING:
-                       default:
-                               return retcode;
-               }
-       }
-       
-       if( pstmt->state <= en_stmt_executed )
-       {
-               switch( retcode )
-               {
-                       case SQL_SUCCESS:
-                       case SQL_SUCCESS_WITH_INFO:
-                               do_cursoropen(hstmt);
-                               break;
-
-                       case SQL_NEED_DATA:
-                               pstmt->state = en_stmt_needdata;
-                               pstmt->need_on = en_ExecDirect;
-                               break;
-
-                       case SQL_STILL_EXECUTING:
-                               pstmt->asyn_on = en_ExecDirect;
-                               break;
-
-                       case SQL_ERROR:
-                               pstmt->state = en_stmt_allocated;
-                               pstmt->cursor_state = en_stmt_cursor_no;
-                               pstmt->prep_state = 0;
-                               break;
-                       
-                       default:
-                               break;
-               }
-       }
 
-       return retcode;
-}
-
-RETCODE SQL_API        SQLPutData( 
-                       HSTMT   hstmt,
-                       PTR     rgbValue,
-                       SDWORD  cbValue )
+RETCODE SQL_API 
+SQLExecute (HSTMT hstmt)
 {
-       STMT_t FAR*     pstmt   = (STMT_t FAR*)hstmt;
-       HPROC           hproc;
-       RETCODE         retcode;
-
-       if( hstmt == SQL_NULL_HSTMT
-        || pstmt->hdbc == SQL_NULL_HDBC )
-       {
-               return SQL_INVALID_HANDLE;
-       }
-
-       /* check argument value */
-       if( rgbValue == NULL
-        && ( cbValue != SQL_DEFAULT_PARAM
-          && cbValue != SQL_NULL_DATA ) )
-       {
-               PUSHSQLERR ( pstmt->herr, en_S1009 );
-
-               return SQL_ERROR;
-       }
-
-       /* check state */
-       if( pstmt->asyn_on == en_NullProc )
-       {
-               if( pstmt->state <= en_stmt_xfetched )
-               {
-                       PUSHSQLERR( pstmt->herr, en_S1010 );
-
-                       return SQL_ERROR;
-               }
-       }
-       else if( pstmt->asyn_on != en_PutData )
-       {
-               PUSHSQLERR ( pstmt->herr, en_S1010 );
-
-               return SQL_ERROR;
-       }
-
-       /* call driver */
-       hproc = _iodbcdm_getproc( pstmt->hdbc, en_PutData );
-
-       if( hproc == SQL_NULL_HPROC )
-       {
-               PUSHSQLERR ( pstmt->herr, en_IM001 );
-
-               return SQL_ERROR;
-       }
-       
-       CALL_DRIVER ( pstmt->hdbc, retcode, hproc, en_PutData, (
-                       pstmt->dhstmt, rgbValue, cbValue ) )
-
-#if 0
-       retcode = hproc(pstmt->dhstmt, rgbValue, cbValue );
-#endif
-
-       /* state transition */
-       if( pstmt->asyn_on == en_PutData )
-       {
-               switch( retcode )
-               {
-                       case SQL_SUCCESS:
-                       case SQL_SUCCESS_WITH_INFO:
-                       case SQL_ERROR:
-                               pstmt->asyn_on = en_NullProc;
-                               break;
-
-                       case SQL_STILL_EXECUTING:
-                       default:
-                               return retcode;
-               }
-       }
-
-       /* must in mustput or canput states */
-       switch( retcode )
-       {
-               case SQL_SUCCESS:
-               case SQL_SUCCESS_WITH_INFO:
-                       pstmt->state = en_stmt_canput;
-                       break;
-
-               case SQL_ERROR:
-                       switch( pstmt->need_on )
-                       {
-                               case en_ExecDirect:
-                                       pstmt->state = en_stmt_allocated;
-                                       pstmt->need_on = en_NullProc;
-                                       break;
-
-                               case en_Execute:
-                                       if( pstmt->prep_state )
-                                       {
-                                               pstmt->state = en_stmt_prepared;
-                                               pstmt->need_on = en_NullProc;
-                                       }
-                                       break;
-
-                               case en_SetPos:
-                                       /* Is this possible ???? */
-                                       pstmt->state = en_stmt_xfetched;
-                                       break;
-
-                               default:
-                                       break;
-                       }
-                       break;
-
-               case SQL_STILL_EXECUTING:
-                       pstmt->asyn_on = en_PutData;
-                       break;
-
-               default:
-                       break;
-       }
-
-       return retcode;
+  STMT_t FAR *pstmt = (STMT_t FAR *) hstmt;
+  HPROC hproc = SQL_NULL_HPROC;
+  RETCODE retcode;
+
+  int sqlstat = en_00000;
+
+  if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC)
+    {
+      return SQL_INVALID_HANDLE;
+    }
+
+  /* check state */
+  if (pstmt->asyn_on == en_NullProc)
+    {
+      switch (pstmt->state)
+        {
+        case en_stmt_allocated:
+          sqlstat = en_S1010;
+          break;
+
+        case en_stmt_executed:
+          if (!pstmt->prep_state)
+            {
+              sqlstat = en_S1010;
+            }
+          break;
+
+        case en_stmt_cursoropen:
+          if (!pstmt->prep_state)
+            {
+              sqlstat = en_S1010;
+            }
+          break;
+
+        case en_stmt_fetched:
+        case en_stmt_xfetched:
+          if (!pstmt->prep_state)
+            {
+              sqlstat = en_S1010;
+            }
+          else
+            {
+              sqlstat = en_24000;
+            }
+          break;
+
+        case en_stmt_needdata:
+        case en_stmt_mustput:
+        case en_stmt_canput:
+          sqlstat = en_S1010;
+          break;
+
+        default:
+          break;
+        }
+    }
+  else if (pstmt->asyn_on != en_Execute)
+    {
+      sqlstat = en_S1010;
+    }
+
+  if (sqlstat == en_00000)
+    {
+      hproc = _iodbcdm_getproc (pstmt->hdbc, en_Execute);
+
+      if (hproc == SQL_NULL_HPROC)
+       {
+         sqlstat = en_IM001;
+       }
+    }
+
+  if (sqlstat != en_00000)
+    {
+      PUSHSQLERR (pstmt->herr, sqlstat);
+
+      return SQL_ERROR;
+    }
+
+  CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_Execute,
+    (pstmt->dhstmt))
+
+  /* stmt state transition */
+  if (pstmt->asyn_on == en_Execute)
+    {
+      switch (retcode)
+        {
+        case SQL_SUCCESS:
+        case SQL_SUCCESS_WITH_INFO:
+        case SQL_NEED_DATA:
+        case SQL_ERROR:
+          pstmt->asyn_on = en_NullProc;
+          break;
+
+        case SQL_STILL_EXECUTING:
+        default:
+          return retcode;
+        }
+    }
+
+  switch (pstmt->state)
+     {
+     case en_stmt_prepared:
+       switch (retcode)
+         {
+         case SQL_SUCCESS:
+         case SQL_SUCCESS_WITH_INFO:
+           do_cursoropen (hstmt);
+           break;
+
+         case SQL_NEED_DATA:
+           pstmt->state = en_stmt_needdata;
+           pstmt->need_on = en_Execute;
+           break;
+
+         case SQL_STILL_EXECUTING:
+           pstmt->asyn_on = en_Execute;
+           break;
+
+         default:
+           break;
+         }
+       break;
+
+     case en_stmt_executed:
+       switch (retcode)
+         {
+         case SQL_ERROR:
+           pstmt->state = en_stmt_allocated;
+           pstmt->cursor_state = en_stmt_cursor_no;
+           pstmt->prep_state = 0;
+           break;
+
+         case SQL_NEED_DATA:
+           pstmt->state = en_stmt_needdata;
+           pstmt->need_on = en_Execute;
+           break;
+
+         case SQL_STILL_EXECUTING:
+           pstmt->asyn_on = en_Execute;
+           break;
+
+         default:
+           break;
+         }
+       break;
+
+     default:
+       break;
+     }
+
+  return retcode;
 }
 
-RETCODE SQL_API        SQLParamData (
-                       HSTMT           hstmt,
-                       PTR FAR*        prgbValue )
-{
-       STMT_t FAR*     pstmt   = (STMT_t FAR*)hstmt;
-       HPROC           hproc;
-       RETCODE         retcode;
-
-       if( hstmt == SQL_NULL_HSTMT
-        || pstmt->hdbc == SQL_NULL_HDBC )
-       {
-               return SQL_INVALID_HANDLE;
-       }
-
-       /* check argument */
-
-       /* check state */
-       if( pstmt->asyn_on == en_NullProc )
-       {
-               if( pstmt->state <= en_stmt_xfetched )
-               {
-                       PUSHSQLERR ( pstmt->herr, en_S1010 );
 
-                       return SQL_ERROR;
-               }
-       }
-       else if( pstmt->asyn_on != en_ParamData )
-       {
-               PUSHSQLERR ( pstmt->herr, en_S1010 );
-
-               return SQL_ERROR;
-       }
-
-       /* call driver */
-       hproc = _iodbcdm_getproc( pstmt->hdbc, en_ParamData );
-
-       if( hproc == SQL_NULL_HPROC )
-       {
-               PUSHSQLERR ( pstmt->herr, en_IM001 );
-
-               return SQL_ERROR;
-       }
-
-       CALL_DRIVER ( pstmt->hdbc, retcode, hproc, en_ParamData, (
-                       pstmt->dhstmt, prgbValue ) )
-
-#if 0
-       retcode = hproc ( pstmt->dhstmt, prgbValue );
-#endif
-
-       /* state transition */
-       if( pstmt->asyn_on == en_ParamData )
-       {
-               switch( retcode )
-               {
-                       case SQL_SUCCESS:
-                       case SQL_SUCCESS_WITH_INFO:
-                       case SQL_ERROR:
-                               pstmt->asyn_on = en_NullProc;
-                               break;
-
-                       case SQL_STILL_EXECUTING:
-                       default:
-                               return retcode;
-               }
-       }
-
-       if( pstmt->state < en_stmt_needdata )
-       {
-               return retcode;
-       }
-
-       switch( retcode )
-       {
-               case SQL_ERROR:
-                       switch( pstmt->need_on )
-                       {
-                               case en_ExecDirect:
-                                       pstmt->state = en_stmt_allocated;
-                                       break;
-               
-                               case en_Execute:
-                                       pstmt->state = en_stmt_prepared;
-                                       break;
-
-                               case en_SetPos:
-                                       pstmt->state = en_stmt_xfetched;
-                                       pstmt->cursor_state 
-                                               = en_stmt_cursor_xfetched;
-                                       break;
-
-                               default:
-                                       break;
-                       }
-                       pstmt->need_on = en_NullProc;
-                       break;
-
-               case SQL_SUCCESS:
-               case SQL_SUCCESS_WITH_INFO:
-                       switch( pstmt->state )
-                       {
-                               case en_stmt_needdata:
-                                       pstmt->state = en_stmt_mustput;
-                                       break;
-                               
-                               case en_stmt_canput: 
-                                       switch( pstmt->need_on )
-                                       {
-                                               case en_SetPos:
-                                                       pstmt->state 
-                                                       = en_stmt_xfetched;
-                                                       pstmt->cursor_state 
-                                                       = en_stmt_cursor_xfetched;
-                                                       break;
-
-                                               case en_ExecDirect:
-                                               case en_Execute:
-                                                       do_cursoropen(hstmt);
-                                                       break;
-
-                                               default:
-                                                       break;
-                                       }
-                                       break;
-
-                               default:
-                                       break;
-                       }
-                       pstmt->need_on = en_NullProc;
-                       break;
-
-               case SQL_NEED_DATA:
-                       pstmt->state = en_stmt_mustput;
-                       break;
-
-               default:
-                       break;
-       }
-
-       return retcode;
+RETCODE SQL_API 
+SQLExecDirect (
+    HSTMT hstmt,
+    UCHAR FAR * szSqlStr,
+    SDWORD cbSqlStr)
+{
+  STMT_t FAR *pstmt = (STMT_t FAR *) hstmt;
+  HPROC hproc = SQL_NULL_HPROC;
+
+  int sqlstat = en_00000;
+  RETCODE retcode = SQL_SUCCESS;
+
+  if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC)
+    {
+      return SQL_INVALID_HANDLE;
+    }
+
+  /* check arguments */
+  if (szSqlStr == NULL)
+    {
+      sqlstat = en_S1009;
+    }
+  else if (cbSqlStr < 0 && cbSqlStr != SQL_NTS)
+    {
+      sqlstat = en_S1090;
+    }
+
+  if (sqlstat != en_00000)
+    {
+      PUSHSQLERR (pstmt->herr, sqlstat);
+
+      return SQL_ERROR;
+    }
+
+  /* check state */
+  if (pstmt->asyn_on == en_NullProc)
+    {
+      switch (pstmt->state)
+        {
+        case en_stmt_fetched:
+        case en_stmt_xfetched:
+          sqlstat = en_24000;
+          break;
+
+        case en_stmt_needdata:
+        case en_stmt_mustput:
+        case en_stmt_canput:
+          sqlstat = en_S1010;
+          break;
+
+        default:
+          break;
+        }
+    }
+  else if (pstmt->asyn_on != en_ExecDirect)
+    {
+      sqlstat = en_S1010;
+    }
+
+  if (sqlstat != en_00000)
+    {
+      PUSHSQLERR (pstmt->herr, sqlstat);
+
+      return SQL_ERROR;
+    }
+
+  hproc = _iodbcdm_getproc (pstmt->hdbc, en_ExecDirect);
+
+  if (hproc == SQL_NULL_HPROC)
+    {
+      PUSHSQLERR (pstmt->herr, en_IM001);
+
+      return SQL_ERROR;
+    }
+
+  CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_ExecDirect,
+    (pstmt->dhstmt, szSqlStr, cbSqlStr))
+
+  /* stmt state transition */
+  if (pstmt->asyn_on == en_ExecDirect)
+    {
+      switch (retcode)
+        {
+        case SQL_SUCCESS:
+        case SQL_SUCCESS_WITH_INFO:
+        case SQL_NEED_DATA:
+        case SQL_ERROR:
+          pstmt->asyn_on = en_NullProc;
+          break;
+
+        case SQL_STILL_EXECUTING:
+        default:
+          return retcode;
+        }
+    }
+
+  if (pstmt->state <= en_stmt_executed)
+    {
+      switch (retcode)
+        {
+        case SQL_SUCCESS:
+        case SQL_SUCCESS_WITH_INFO:
+          do_cursoropen (hstmt);
+          break;
+
+        case SQL_NEED_DATA:
+          pstmt->state = en_stmt_needdata;
+          pstmt->need_on = en_ExecDirect;
+          break;
+
+        case SQL_STILL_EXECUTING:
+          pstmt->asyn_on = en_ExecDirect;
+          break;
+
+        case SQL_ERROR:
+          pstmt->state = en_stmt_allocated;
+          pstmt->cursor_state = en_stmt_cursor_no;
+          pstmt->prep_state = 0;
+          break;
+
+        default:
+          break;
+        }
+    }
+
+  return retcode;
 }
 
 
-RETCODE SQL_API        SQLNumParams (
-                       HSTMT           hstmt,
-                       SWORD FAR*      pcpar )
+RETCODE SQL_API 
+SQLPutData (
+    HSTMT hstmt,
+    PTR rgbValue,
+    SDWORD cbValue)
 {
-       STMT_t FAR*     pstmt   = (STMT_t FAR*)hstmt;
-       HPROC           hproc;
-       RETCODE         retcode;
-
-       if( hstmt == SQL_NULL_HSTMT
-        || pstmt->hdbc == SQL_NULL_HDBC )
-       {
-               return SQL_INVALID_HANDLE;
-       }
-
-       /* check argument */
-
-       /* check state */
-       if( pstmt->asyn_on == en_NullProc )
-       {
-               switch( pstmt->state )
-               {
-                       case en_stmt_allocated:
-                       case en_stmt_needdata:
-                       case en_stmt_mustput:
-                       case en_stmt_canput:
-                               PUSHSQLERR ( pstmt->herr, en_S1010 );
-                               return SQL_ERROR;
-       
-                       default:
-                               break;
-               }
-       }
-       else if( pstmt->asyn_on != en_NumParams )
-       {
-               PUSHSQLERR ( pstmt->herr, en_S1010 );
-               
-               return SQL_ERROR;
-       }
-
-       /* call driver */
-       hproc = _iodbcdm_getproc ( pstmt->hdbc, en_NumParams );
-
-       if( hproc == SQL_NULL_HPROC )
-       {
-               PUSHSQLERR ( pstmt->herr, en_IM001 );
-
-               return SQL_ERROR;
-       }
-       
-       CALL_DRIVER ( pstmt->hdbc, retcode, hproc, en_NumParams, (
-                       pstmt->dhstmt, pcpar) )
-
-
-#if 0
-       retcode = hproc ( pstmt->dhstmt, pcpar );
-#endif
-
-       /* state transition */
-       if( pstmt->asyn_on == en_NumParams )
-       {
-               switch ( retcode )
-               {
-                       case SQL_SUCCESS:
-                       case SQL_SUCCESS_WITH_INFO:
-                       case SQL_ERROR:
-                               break;
-
-                       default:
-                               return retcode;
-               }
-       }
-
-       if( retcode == SQL_STILL_EXECUTING )
-       {
-               pstmt->asyn_on = en_NumParams;
-       }
-
-       return retcode;
+  STMT_t FAR *pstmt = (STMT_t FAR *) hstmt;
+  HPROC hproc;
+  RETCODE retcode;
+
+  if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC)
+    {
+      return SQL_INVALID_HANDLE;
+    }
+
+  /* check argument value */
+  if (rgbValue == NULL && 
+       (cbValue != SQL_DEFAULT_PARAM && cbValue != SQL_NULL_DATA))
+    {
+      PUSHSQLERR (pstmt->herr, en_S1009);
+
+      return SQL_ERROR;
+    }
+
+  /* check state */
+  if (pstmt->asyn_on == en_NullProc)
+    {
+      if (pstmt->state <= en_stmt_xfetched)
+       {
+         PUSHSQLERR (pstmt->herr, en_S1010);
+
+         return SQL_ERROR;
+       }
+    }
+  else if (pstmt->asyn_on != en_PutData)
+    {
+      PUSHSQLERR (pstmt->herr, en_S1010);
+
+      return SQL_ERROR;
+    }
+
+  /* call driver */
+  hproc = _iodbcdm_getproc (pstmt->hdbc, en_PutData);
+
+  if (hproc == SQL_NULL_HPROC)
+    {
+      PUSHSQLERR (pstmt->herr, en_IM001);
+
+      return SQL_ERROR;
+    }
+
+  CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_PutData,
+    (pstmt->dhstmt, rgbValue, cbValue))
+
+  /* state transition */
+  if (pstmt->asyn_on == en_PutData)
+    {
+      switch (retcode)
+        {
+        case SQL_SUCCESS:
+        case SQL_SUCCESS_WITH_INFO:
+        case SQL_ERROR:
+          pstmt->asyn_on = en_NullProc;
+          break;
+
+        case SQL_STILL_EXECUTING:
+        default:
+          return retcode;
+        }
+    }
+
+  /* must in mustput or canput states */
+  switch (retcode)
+     {
+     case SQL_SUCCESS:
+     case SQL_SUCCESS_WITH_INFO:
+       pstmt->state = en_stmt_canput;
+       break;
+
+     case SQL_ERROR:
+       switch (pstmt->need_on)
+         {
+         case en_ExecDirect:
+           pstmt->state = en_stmt_allocated;
+           pstmt->need_on = en_NullProc;
+           break;
+
+         case en_Execute:
+           if (pstmt->prep_state)
+             {
+               pstmt->state = en_stmt_prepared;
+               pstmt->need_on = en_NullProc;
+             }
+           break;
+
+         case en_SetPos:
+           /* Is this possible ???? */
+           pstmt->state = en_stmt_xfetched;
+           break;
+
+         default:
+           break;
+         }
+       break;
+
+     case SQL_STILL_EXECUTING:
+       pstmt->asyn_on = en_PutData;
+       break;
+
+     default:
+       break;
+     }
+
+  return retcode;
 }
 
-RETCODE SQL_API        SQLDescribeParam (
-                       HSTMT           hstmt,
-                       UWORD           ipar,
-                       SWORD  FAR*     pfSqlType,
-                       UDWORD FAR*     pcbColDef,
-                       SWORD  FAR*     pibScale,
-                       SWORD  FAR*     pfNullable )
-{
-       STMT_t FAR*     pstmt   = (STMT_t FAR*)hstmt;
-       HPROC           hproc;
-       RETCODE         retcode;
-
-       if( hstmt == SQL_NULL_HSTMT
-        || pstmt->hdbc == SQL_NULL_HDBC )
-       {
-               return SQL_INVALID_HANDLE;
-       }
-
-       /* check argument */
-       if( ipar == 0 )
-       {
-               PUSHSQLERR ( pstmt->herr, en_S1093 );
-
-               return SQL_ERROR;
-       }
 
-       /* check state */
-       if( pstmt->asyn_on == en_NullProc )
-       {
-               switch( pstmt->state )
-               {
-                       case en_stmt_allocated:
-                       case en_stmt_needdata:
-                       case en_stmt_mustput:
-                       case en_stmt_canput:
-                               PUSHSQLERR ( pstmt->herr, en_S1010 );
-                               return SQL_ERROR;
-       
-                       default:
-                               break;
-               }
-       }
-       else if( pstmt->asyn_on != en_DescribeParam )
-       {
-               PUSHSQLERR ( pstmt->herr, en_S1010 );
-               
-               return SQL_ERROR;
-       }
-
-       /* call driver */
-       hproc = _iodbcdm_getproc ( pstmt->hdbc, en_DescribeParam );
-
-       if( hproc == SQL_NULL_HPROC )
-       {
-               PUSHSQLERR ( pstmt->herr, en_IM001 );
+RETCODE SQL_API 
+SQLParamData (
+    HSTMT hstmt,
+    PTR FAR * prgbValue)
+{
+  STMT_t FAR *pstmt = (STMT_t FAR *) hstmt;
+  HPROC hproc;
+  RETCODE retcode;
+
+  if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC)
+    {
+      return SQL_INVALID_HANDLE;
+    }
+
+  /* check argument */
+
+  /* check state */
+  if (pstmt->asyn_on == en_NullProc)
+    {
+      if (pstmt->state <= en_stmt_xfetched)
+       {
+         PUSHSQLERR (pstmt->herr, en_S1010);
+
+         return SQL_ERROR;
+       }
+    }
+  else if (pstmt->asyn_on != en_ParamData)
+    {
+      PUSHSQLERR (pstmt->herr, en_S1010);
+
+      return SQL_ERROR;
+    }
+
+  /* call driver */
+  hproc = _iodbcdm_getproc (pstmt->hdbc, en_ParamData);
+
+  if (hproc == SQL_NULL_HPROC)
+    {
+      PUSHSQLERR (pstmt->herr, en_IM001);
+
+      return SQL_ERROR;
+    }
+
+  CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_ParamData,
+    (pstmt->dhstmt, prgbValue))
+
+  /* state transition */
+  if (pstmt->asyn_on == en_ParamData)
+    {
+      switch (retcode)
+        {
+        case SQL_SUCCESS:
+        case SQL_SUCCESS_WITH_INFO:
+        case SQL_ERROR:
+          pstmt->asyn_on = en_NullProc;
+          break;
+
+        case SQL_STILL_EXECUTING:
+        default:
+          return retcode;
+        }
+    }
+
+  if (pstmt->state < en_stmt_needdata)
+    {
+      return retcode;
+    }
+
+  switch (retcode)
+     {
+     case SQL_ERROR:
+       switch (pstmt->need_on)
+         {
+         case en_ExecDirect:
+           pstmt->state = en_stmt_allocated;
+           break;
+
+         case en_Execute:
+           pstmt->state = en_stmt_prepared;
+           break;
+
+         case en_SetPos:
+           pstmt->state = en_stmt_xfetched;
+           pstmt->cursor_state
+               = en_stmt_cursor_xfetched;
+           break;
+
+         default:
+           break;
+         }
+       pstmt->need_on = en_NullProc;
+       break;
+
+     case SQL_SUCCESS:
+     case SQL_SUCCESS_WITH_INFO:
+       switch (pstmt->state)
+         {
+         case en_stmt_needdata:
+           pstmt->state = en_stmt_mustput;
+           break;
+
+         case en_stmt_canput:
+           switch (pstmt->need_on)
+              {
+              case en_SetPos:
+                pstmt->state
+                    = en_stmt_xfetched;
+                pstmt->cursor_state
+                    = en_stmt_cursor_xfetched;
+                break;
+
+              case en_ExecDirect:
+              case en_Execute:
+                do_cursoropen (hstmt);
+                break;
+
+              default:
+                break;
+              }
+           break;
+
+         default:
+           break;
+         }
+       pstmt->need_on = en_NullProc;
+       break;
+
+     case SQL_NEED_DATA:
+       pstmt->state = en_stmt_mustput;
+       break;
+
+     default:
+       break;
+     }
+
+  return retcode;
+}
 
-               return SQL_ERROR;
-       }
 
-       CALL_DRIVER ( pstmt->hdbc, retcode, hproc, en_DescribeParam, (
-                       pstmt->dhstmt, 
-                       ipar,
-                       pfSqlType,
-                       pcbColDef,
-                       pibScale,
-                       pfNullable ) )
-
-#if 0
-       retcode = hproc(pstmt->dhstmt, 
-                       ipar,
-                       pfSqlType,
-                       pcbColDef,
-                       pibScale,
-                       pfNullable );
-#endif
-
-       /* state transition */
-       if( pstmt->asyn_on == en_DescribeParam )
-       {
-               switch ( retcode )
-               {
-                       case SQL_SUCCESS:
-                       case SQL_SUCCESS_WITH_INFO:
-                       case SQL_ERROR:
-                               break;
-
-                       default:
-                               return retcode;
-               }
-       }
+RETCODE SQL_API 
+SQLNumParams (
+    HSTMT hstmt,
+    SWORD FAR * pcpar)
+{
+  STMT_t FAR *pstmt = (STMT_t FAR *) hstmt;
+  HPROC hproc;
+  RETCODE retcode;
+
+  if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC)
+    {
+      return SQL_INVALID_HANDLE;
+    }
+
+  /* check argument */
+
+  /* check state */
+  if (pstmt->asyn_on == en_NullProc)
+    {
+      switch (pstmt->state)
+        {
+        case en_stmt_allocated:
+        case en_stmt_needdata:
+        case en_stmt_mustput:
+        case en_stmt_canput:
+          PUSHSQLERR (pstmt->herr, en_S1010);
+          return SQL_ERROR;
+
+        default:
+          break;
+        }
+    }
+  else if (pstmt->asyn_on != en_NumParams)
+    {
+      PUSHSQLERR (pstmt->herr, en_S1010);
+
+      return SQL_ERROR;
+    }
+
+  /* call driver */
+  hproc = _iodbcdm_getproc (pstmt->hdbc, en_NumParams);
+
+  if (hproc == SQL_NULL_HPROC)
+    {
+      PUSHSQLERR (pstmt->herr, en_IM001);
+
+      return SQL_ERROR;
+    }
+
+  CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_NumParams,
+    (pstmt->dhstmt, pcpar))
+
+  /* state transition */
+  if (pstmt->asyn_on == en_NumParams)
+    {
+      switch (retcode)
+        {
+        case SQL_SUCCESS:
+        case SQL_SUCCESS_WITH_INFO:
+        case SQL_ERROR:
+          break;
+
+        default:
+          return retcode;
+        }
+    }
+
+  if (retcode == SQL_STILL_EXECUTING)
+    {
+      pstmt->asyn_on = en_NumParams;
+    }
+
+  return retcode;
+}
 
-       if( retcode == SQL_STILL_EXECUTING )
-       {
-               pstmt->asyn_on = en_DescribeParam;
-       }
 
-       return retcode;
+RETCODE SQL_API 
+SQLDescribeParam (
+    HSTMT hstmt,
+    UWORD ipar,
+    SWORD FAR * pfSqlType,
+    UDWORD FAR * pcbColDef,
+    SWORD FAR * pibScale,
+    SWORD FAR * pfNullable)
+{
+  STMT_t FAR *pstmt = (STMT_t FAR *) hstmt;
+  HPROC hproc;
+  RETCODE retcode;
+
+  if (hstmt == SQL_NULL_HSTMT || pstmt->hdbc == SQL_NULL_HDBC)
+    {
+      return SQL_INVALID_HANDLE;
+    }
+
+  /* check argument */
+  if (ipar == 0)
+    {
+      PUSHSQLERR (pstmt->herr, en_S1093);
+
+      return SQL_ERROR;
+    }
+
+  /* check state */
+  if (pstmt->asyn_on == en_NullProc)
+    {
+      switch (pstmt->state)
+        {
+        case en_stmt_allocated:
+        case en_stmt_needdata:
+        case en_stmt_mustput:
+        case en_stmt_canput:
+          PUSHSQLERR (pstmt->herr, en_S1010);
+          return SQL_ERROR;
+
+        default:
+          break;
+        }
+    }
+  else if (pstmt->asyn_on != en_DescribeParam)
+    {
+      PUSHSQLERR (pstmt->herr, en_S1010);
+
+      return SQL_ERROR;
+    }
+
+  /* call driver */
+  hproc = _iodbcdm_getproc (pstmt->hdbc, en_DescribeParam);
+
+  if (hproc == SQL_NULL_HPROC)
+    {
+      PUSHSQLERR (pstmt->herr, en_IM001);
+
+      return SQL_ERROR;
+    }
+
+  CALL_DRIVER (pstmt->hdbc, retcode, hproc, en_DescribeParam,
+    (pstmt->dhstmt, ipar, pfSqlType, pcbColDef, pibScale, pfNullable))
+
+  /* state transition */
+  if (pstmt->asyn_on == en_DescribeParam)
+    {
+      switch (retcode)
+        {
+        case SQL_SUCCESS:
+        case SQL_SUCCESS_WITH_INFO:
+        case SQL_ERROR:
+          break;
+
+        default:
+          return retcode;
+        }
+    }
+
+  if (retcode == SQL_STILL_EXECUTING)
+    {
+      pstmt->asyn_on = en_DescribeParam;
+    }
+
+  return retcode;
 }