topic Creating custom component for REST API in Talend Studio

Creating custom component for REST API

FGharbi1701429439 — Fri, 02 Jan 2026 14:45:42 GMT

Hello,

I am looking to develop a custom component with the same features of TRestClient but with an additional feature which is ithe capability to process the incoming data stream in a single pass and aggregate all records together in the request body as a JSON payload to do just one api call (all of it in the same component).

This modification aims to optimize data processing efficiency by minimizing the number of interactions required between the client and server.

The web services that i'll be using in this component accept multiple querying.

I'm not sure about which is the appropriate method to develop this component, using javajet files or talend component kit.

For the javajet files, i don't find the documentation and the overview of the modules.

For talend component kit, i have read the documentation and i don't know how to process the incoming data in a single pass to aggregate them in a signle structure.

Thanks for any help and guidance in advance.

Re: Creating custom component for REST API

Anonymous — Mon, 11 Dec 2023 12:23:03 GMT

Hello,

There's also the tHTTPClient component which is based on TCK and has its functionality exposed so other components can piggyback on it.

For example the JIRA component is using that under the hood: https://github.com/Talend/connectors-se/tree/master/jira/src/main/java/org/talend/components/jira

I'd give TCK a try and create a wrapper component for HttpClient.

Re: Creating custom component for REST API

FGharbi1701429439 — Mon, 11 Dec 2023 13:06:40 GMT

Hello,

Thanks for your reply.

I have read some examples of code under connectors-se but my problem is that i can't find how to manipulate the incoming data records in the way that i mentioned in my post 😕

Re: Creating custom component for REST API

TerriFrance — Fri, 12 Jan 2024 11:45:14 GMT

Thanks for saving my day.

Re: Creating custom component for REST API

konvertilo — Mon, 25 Nov 2024 16:32:31 GMT

and I think it's not possible for the moment to develop a "component" tab.

To process the data is quite simple because in the "@ElementListener", you receive the Input record

@ElementListener
public void onNext(
@Input final Record inputData,@Output final OutputEmitter<Record> outputData)

TCK framework is not at the same level as the javajet framework.

I'm just trying to get the equivalent of the tAggregateRow "component" tab with TCK last version and it's not working. And the documentation doesn't help.