topic Re: How to iterate over RESTClient response and call Rest API for each interation in Talend Studio

How to iterate over RESTClient response and call Rest API for each interation

matthewdeveloper — Wed, 22 Dec 2021 13:48:54 GMT

Hi everyone, I'm a beginner in Talend, so basically I need to call a REST API, extract one column of the response (array of ids), and then for each ID I need to call another REST API to extract more data. How can I do that?

I managed to get to the array of ids but I have no idea how to interact over each ID to call my next endpoint.

any help would be very appreciated.

Re: How to iterate over RESTClient response and call Rest API for each interation

gjeremy1617088143 — Wed, 22 Dec 2021 14:01:57 GMT

Hi you can use tFlowtoIterate component after tExtractJsonFields with a main link then you use an iterate link on tRestClient and in the tRestCLient component you use the globalVar of the tFlowToIterate:

eg : if row2 is between tExtractJsonfield and tFlowToIterate then the variable will be (String)globalMap.get("row2.id").

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Re: How to iterate over RESTClient response and call Rest API for each interation

matthewdeveloper — Wed, 22 Dec 2021 14:17:40 GMT

i cant create an iterate link between tFlowtoIterate and the next tRestClient

Re: How to iterate over RESTClient response and call Rest API for each interation

gjeremy1617088143 — Wed, 22 Dec 2021 14:19:01 GMT

so you can iterate on a tJava empty and you put an on component ok link between tJava and tRestClient

Re: How to iterate over RESTClient response and call Rest API for each interation

matthewdeveloper — Wed, 22 Dec 2021 14:24:32 GMT

i managed to create the iterate link by using normal tRest

is there any difference between tRestClient and tRest?

Re: How to iterate over RESTClient response and call Rest API for each interation

gjeremy1617088143 — Wed, 22 Dec 2021 14:27:05 GMT

if you are familiar with tRestClient keep it :

tFlowToiTerate-->iterate link--> tJava (nothing inside)-->on component ok link--> tRestClient

Re: How to iterate over RESTClient response and call Rest API for each interation

matthewdeveloper — Wed, 22 Dec 2021 20:59:44 GMT

thank you it worked