topic How does Data binding works on TKC in Talend Studio

How does Data binding works on TKC

Safus — Fri, 02 Jan 2026 14:45:42 GMT

Hi all,

I just wanted to know how data-binding works in TKC ?

I am just imagining this scenario :

I have a Query (a textArea Field) with a @DefaultValue("SELECT * FROM Table LIMIT 10"),

like this :

@Option

@TextArea

@Required

@DefaultValue

("\"SELECT * FROM Table LIMIT 10\"")

@Documentation("TODO fill the documentation for this parameter")

private String sqlQuery;

Can the component's rendering be refreshed dynamically with a click on "guessSchema" Button for example?

So guessSchema in my service will have two functionalities :

1-Retrieve Schema (It's Done and at this point, no problem and @DiscoverSchema works fine.)

2-Update the "private String sqlQuery" 's value and refresh component rendering. Is it even possible ? Or is it possible to create a new button similarly to "Guess Query" that generates the query according to the detected schema ?

Regards,

Safus

Re: How does Data binding works on TKC

undx — Mon, 01 Mar 2021 08:31:31 GMT

Hi @safouane BEN MANSOUR ,

For updating an object in your form configuration, you may use the `Update` action (https://talend.github.io/component-runtime/main/1.31.0/ref-actions.html#_update).

You have a working example available here: https://talend.github.io/component-runtime/main/1.31.0/gallery.html

Best regards

Emmanuel

Re: How does Data binding works on TKC

Safus — Wed, 03 Mar 2021 15:51:13 GMT

Thank you very much for your help.

I managed to create the updatable config.

Best Regards,

Safus