* Only set cursor name for selectable queries

git-svn-id: trunk@47643 -

packages/fcl-db/src/sqldb/interbase/ibconnection.pp

@@ -49,6 +49,7 @@ type
     in_SQLDA             : PXSQLDA;
     ParamBinding         : array of integer;
     FieldBinding         : array of integer;
+    CursorName : String;
   end;
 
   TIBTrans = Class(TSQLHandle)
@@ -70,6 +71,7 @@ type
     FBlobSegmentSize       : word; //required for backward compatibilty; not used
     FUseConnectionCharSetIfNone: Boolean;
     FWireCompression       : Boolean;
+    FCursorCount : Integer;
     procedure ConnectFB;
 
     procedure AllocSQLDA(var aSQLDA : PXSQLDA;Count : integer);
@@ -773,6 +775,7 @@ begin
   curs.sqlda := nil;
   curs.StatementHandle := nil;
   curs.FPrepared := False;
+  curs.CursorName:='';
   AllocSQLDA(curs.SQLDA,0);
   result := curs;
 end;
@@ -809,6 +812,7 @@ begin
     begin
     DatabaseHandle := GetHandle;
     TransactionHandle := aTransaction.Handle;
+    CursorName:='';
 
     if isc_dsql_allocate_statement(@Status[0], @DatabaseHandle, @StatementHandle) <> 0 then
       CheckError('PrepareStatement', Status);
@@ -908,6 +912,7 @@ begin
           CheckError('FreeStatement', Status);
         StatementHandle := nil;
         FPrepared := False;
+        CursorName:='';
       end;
     FreeSQLDABuffer(SQLDA);
     FreeSQLDABuffer(in_SQLDA);
@@ -950,21 +955,29 @@ begin
     FieldNameQuoteChars := NoQuotes
   else
     FieldNameQuoteChars := DoubleQuotes;
+  FCursorCount:=0;
 end;
 
 procedure TIBConnection.FreeFldBuffers(cursor : TSQLCursor);
 
+
 begin
   with cursor as TIBCursor do
     begin
-    if isc_dsql_free_statement(@Status, @StatementHandle, DSQL_close)<>0 then
-      CheckError('Close Cursor', Status);
+    if FSelectable and (CursorName<>'') then
+      begin
+      if isc_dsql_free_statement(@Status, @StatementHandle, DSQL_close)<>0 then
+        CheckError('Close Cursor', Status); // Ignore this, it can already be closed.
+      end;
     end;
 end;
 
 procedure TIBConnection.Execute(cursor: TSQLCursor;atransaction:tSQLtransaction; AParams : TParams);
-var TransactionHandle : pointer;
-    out_SQLDA : PXSQLDA;
+var
+  TransactionHandle : pointer;
+  out_SQLDA : PXSQLDA;
+  S: String;
+
 begin
   TransactionHandle := aTransaction.Handle;
   if Assigned(APArams) and (AParams.count > 0) then SetParameters(cursor, atransaction, AParams);
@@ -978,8 +991,17 @@ begin
       out_SQLDA := nil;
     if isc_dsql_execute2(@Status[0], @TransactionHandle, @StatementHandle, 1, in_SQLDA, out_SQLDA) <> 0 then
       CheckError('Execute', Status);
-    if isc_dsql_set_cursor_name(@Status[0], @StatementHandle, 'sqldbcursor', 0) <> 0 then
-      CheckError('Open Cursor', Status);
+    if FSelectable then
+      begin
+      if CursorName='' then
+        begin
+        Inc(FCursorCount);
+        CursorName:='sqldbcursor'+IntToStr(FCursorCount);
+        end;
+      if isc_dsql_set_cursor_name(@Status[0], @StatementHandle, PChar(CursorName) , 0) <> 0 then
+        CheckError('Open Cursor', Status);
+    end
+    else
   end;
 end;