As well as dataset for a reader/writer, You can create a User Parameter linked to the source dataset or link the source dataset to an existing User Parameter, on the Navigator window.

As well as dataset for a reader/writer, You can create a User Parameter linked to the source dataset or link the source dataset to an existing User Parameter, on the Navigator window.

Hello @takashi, @david_r,
yes, thank You so much! Unfortunately, it is only one part of my problem. Yes, I can define schemamapper source file via User parameter. Anyway, please just imagine situation, when user modified source file for schemamapper (adding some columns for filtering, adding some columns for new attributes). Is there any way, how to dynamically change Filter conditions, New attribute condition etc. based on modified source file? I checked that e.g. Map attrs parameter in SchemaMapper transformer is not able to be linked to User parameter.

Thanks a lot!
Lubo
Hello @takashi, @david_r,
yes, thank You so much! Unfortunately, it is only one part of my problem. Yes, I can define schemamapper source file via User parameter. Anyway, please just imagine situation, when user modified source file for schemamapper (adding some columns for filtering, adding some columns for new attributes). Is there any way, how to dynamically change Filter conditions, New attribute condition etc. based on modified source file? I checked that e.g. Map attrs parameter in SchemaMapper transformer is not able to be linked to User parameter.

Thanks a lot!
Lubo
As far as I know, that is unfortunately not possible. I do not think you can parametrize much else than what is visible in the Navigator tree.
As far as I know, that is unfortunately not possible. I do not think you can parametrize much else than what is visible in the Navigator tree.
@david_r, thank you for confirmation!