topic Re: tFileExist with external parameter in Talend Studio

tFileExist with external parameter

Anonymous — Thu, 13 Sep 2018 13:41:38 GMT

Hi!

I would like to implement a job which gets a parameter passed via context. So my context includes the parameter "file". I tried String and File so far. Based on this parameter I would like to have a tFileExists task to check if this file really exists.

Unfortunately it seems to, that this context parameter (context.file) is not recongnized by the task. tFileExists is telling me ok in every case.

How is the best practice to do such a FileCheck?

Can someone describe me, why tFileExists is saying that a file exists, even when the context is bogus?

Thank you,

Christian

Re: tFileExist with external parameter

TRF — Thu, 13 Sep 2018 14:24:26 GMT

Share your job design + tFileExists settings

Re: tFileExist with external parameter

Anonymous — Thu, 13 Sep 2018 14:41:57 GMT

Hi,

it is simple:

Context:
file: c:/null (String)

tFileExist (context.file) -- ok -- tMsgBox "ok"
/-- not ok -- tMsgBox "not ok"

The result is in every case "ok".

Thanks

Re: tFileExist with external parameter

TRF — Thu, 13 Sep 2018 15:05:59 GMT

This is a common mistake.

You need an "If" trigger to check the value of the "EXISTS" variable associated to the tFileExists component.

The design should be tFileExists--(If trigger)-->tMsgBox.

If the condition associated to the trigger is "((Boolean)globalMap.get("tFileExists_1_EXISTS"))" and the file exists, the tMsgBox will run.

Re: tFileExist with external parameter

Anonymous — Thu, 13 Sep 2018 16:07:06 GMT

Thanks. That was helpful...