topic Re: [resolved] Pass a value back to a calling app in Talend Studio

[resolved] Pass a value back to a calling app

alevy — Sat, 16 Nov 2024 12:53:20 GMT

In exporting a Talend job as an .exe, is there a way that an execution-return value can be passed back to whichever app calls the Talend job (other than writing to a file or DB)?

Re: [resolved] Pass a value back to a calling app

Anonymous — Mon, 06 Jun 2011 15:06:17 GMT

well, you could always use your exit code... but mixed meaning in variables is usually a bad idea. in my experience, using files for this isnt as bad as it first appears.

Re: [resolved] Pass a value back to a calling app

alevy — Tue, 07 Jun 2011 00:51:49 GMT

This will be my first attempt at exporting an autonomous job from Talend, let alone running it from another app, so can you please explain a bit more. How do you set the exit code and how is that picked up by the calling app? At this stage I only envisage needing to know that the job completed and whether it was successful or not.
Thanks

Re: [resolved] Pass a value back to a calling app

Anonymous — Tue, 07 Jun 2011 04:32:33 GMT

when you export the job, youll get a zip package with a shell script and batch file inside. when you execute the batch file, the exit code will be set to 1 or 0 or whatever you jam in a tDie
if you call it with java, its returned by the Runtime.exec() function. If you just execute it from the command prompt, in windows do "echo %errorlevel%" and linux "echo $?"

Re: [resolved] Pass a value back to a calling app

Anonymous — Tue, 07 Jun 2011 16:33:16 GMT

In exporting a Talend job as an .exe, is there a way that an execution-return value can be passed back to whichever app calls the Talend job (other than writing to a file or DB)?

Well you could use the process exit value, but the proper way to handle depends on the calling application (shell ? code ? ... )

Re: [resolved] Pass a value back to a calling app

alevy — Sun, 10 Jul 2011 13:10:23 GMT

I didn't end up using this but found that if using tSystem to call Talend's exported batch files (a long story as to why that was necessary), the error code from a tDie in the called job will be returned by tSystem's EXIT_VALUE.