topic tRest input only getting last value in Talend Studio

tRest input only getting last value

fjblau — Wed, 27 Mar 2019 08:12:34 GMT

I have cascading Rest API's that I need to call... the first API call returns 10 rows with id's that I need to pass to the second API call.

A tLogRow shows all 10 id's being output correctly.

I then used the technique of setting a globalMap value with

globalMap.put("id", input_row.id);

and then using that globalMap in the next tRest API.

The problem is that it only lets me connect with a "On Component OK" trigger, and it is only doing the LAST id query in the tRest object.

How can I get it to iterate on those ID's and not just run the last one?

Re: tRest input only getting last value

vapukov — Wed, 27 Mar 2019 22:11:26 GMT

you need to use tFlowToIterate, it will store each id into the variable and do following steps one by one iteration

https://help.talend.com/reader/wDRBNUuxk629sNcI0dNYaA/WqJCkTE5~5DDaSFvtNXZnQ

Re: tRest input only getting last value

fjblau — Thu, 28 Mar 2019 07:20:05 GMT

That is awesome, thanks!

I got something to work like that using a tJavaFlex too... but is there a performance difference between them? I can definitely see the tFlowIterator being easier to read!

Re: tRest input only getting last value

vapukov — Thu, 28 Mar 2019 11:11:50 GMT

no difference in speed as I know (or it extremely low)