"use existing connection" feature in Talend Component Kit

[KYildirim1]

Hello,

I'm currently using the latest version of the Talend Component Kit, and I'm trying to reuse connections created with tDBConnection, but I don't now how to access the connections. Any input would be appreciated, as my code currently creates multiple connections to the same database inside the same components.

Best regards

Kaan

[wwang]

Hi @Kaan Yildirim​ ,

if you mean how to develop a connection component for your connector, you can see the part :

"How to create a reusable connection in Studio" in

https://talend.github.io/component-runtime/main/1.34.0/creating-dataset-datastore.html

[KYildirim1]

Hey @Wei Wang​ ,

I would like to create a connection to any Database (using tDBConnection) and to use the connection for a generic Component which would then do some magic. My goal is to have a field in the component settings in talend with a dropdown menu where I then can pick the connection (similar to tDBInput etc.).

I will try to follow the Guide, thanks 😊

[MPogorelov1634291005]

Up. I have the same question

[Schrauber]

OK, I got it working. like described here: https://talend.github.io/component-runtime/main/1.47.0/creating-dataset-datastore.html

I do now have an extra connection component and on the input component there is a checkbox "use an existing connection" and I can select the Connection component.

But if I check "use an existing connection" the connection parameters stay in my input compoent.

I have defined the connection parameters in an DataStore.

So I think they should disappear in Input component, when "use an existing connection" is checked.

I thought about using @ActiveIf annotation in my DataSet definition. But what should be the condition for the @ActiveIf?

Any Ideas?

[Schrauber]

OK, I found the bug in my code.

I had a variable with the same name as a class. This caused this not working like described in the links above.

After fixing this, all works fine.