Webutil - to check the file/folder path is valid in client pc

Question

I'm using oracle 10g forms. OS is Windows.
When i try to write a file from DB to Client in order to open the file in client system,
i 'm using CLIENT_HOST('CMD /C '||<filename>); => which saves the file in desktop.
In order to specify a different location, i assigned a local variable and concatenating it with the file name. But my requirement is, before i specify a different path, i want to know whether the path is valid or not?
Say for example:
var_temp_folder := 'C:\DB_File\';
var_success :=
webutil_file_transfer.DB_To_Client_with_progress(
clientFile => <filename>
,tableName => <tablename>
,columnName => <columnname>
,whereClause => <where_clause_condition>
     ,progressTitle => 'Download from Database in progress'
     ,progressSubTitle=> 'Please wait');
CLIENT_HOST('CMD /C '||var_temp_folder||<filename>);
-- On the above, var_temp_folder is the local variable i specified, i 'm opening the file from DB to Client PC.
But before that i want to check whether this path in var_temp_folder variable is available in client pc (Note: Client PC runs on windows).
For that, can i use the CLIENT_HOST or any other function/procedure in WEBUTIL available for the same?
Any immediate help would be appreciated..
Regards
Muthu

Answer 1

Yea... i found the solution...
webutil_file.file_is_directory(<folder_path>) will help to check the whether the path is valid or not in client pc.
if not webutil_file.file_is_directory(<folder_path>) then
user_message('Path does not exist');
raise form_trigger_failure;
end if;
Any other suggestions also be appreciated..
Thanks
Muthu