topic Re: tFileExist doesn't show message when added tFileList in Talend Studio

tFileExist doesn't show message when added tFileList

Anonymous — Thu, 25 Oct 2018 00:00:10 GMT

Hi There,

I have created a simple job to message me whether file/s exists or not in a folder.

Scenario 1: When I used tFileExist with file name, the job works great. I get message 'File exist' or 'No File exist'.

tFileExist --> If --> tMsgBox (FileExist)

--> If --> tMsgBox (NoFileExist)

Scenario 2: But i want to use a folder where i can expect different files. So i added tFileList component with wildcard and 'Interated' to tFileExist.

But the job never shows neither 'File Exist' nor 'No File Exist', BUT it finishes successfully. (The attached screenshot has all informations).

Is it a product bug? or am i missing something?

I have gone thro many articles, cracked my head, but nothing is useful.

regards,

Kiruba

Re: tFileExist doesn't show message when added tFileList

Anonymous — Thu, 25 Oct 2018 03:41:11 GMT

It seems no files are found on tfileList, the other components will not be triggered if there are no files. You need to check the filemask you set.

Regards

Shong

Re: tFileExist doesn't show message when added tFileList

Anonymous — Thu, 25 Oct 2018 04:40:03 GMT

Hi Shong,

Yes it doesn't have file now, so i expect that tFileExist would trigger the tMsgBox (NoFile) and would say "no file exist". But it is not.

regards,

Kiruba

Re: tFileExist doesn't show message when added tFileList

Ganshyam — Thu, 25 Oct 2018 16:02:20 GMT

Hello,

As you don't have the file in tfilelist component it won't trigger and it will not pass any output to the tfileexist component ,as a result tfileExit won't be able to check the IF condition.

Other way out.

Hope this solves your purpose...!!!!

Regards

Ganshyam

Re: tFileExist doesn't show message when added tFileList

Anonymous — Thu, 25 Oct 2018 21:43:28 GMT

Wow Ganshyam.

I have replicated as like yours; When the tFileList_1 has file, the job shows me "File Exist" message. But the job gives me below error when no file in tFileList_1

Exception in component tFileList_1 (tFileExist)
java.lang.NullPointerException

This is what i tried (screenshot attached),

tFileList_1 --> tFileExist_1 --> If =((Boolean)globalMap.get("tFileExist_1_EXISTS")) --> tMsgBox

If =!((Boolean)globalMap.get("tFileList_1_EXISTS"))

tMsgBox (NoFile)

regards,

Kiruba

Talend_tFileExist_NullException_Issue.jpg

Re: tFileExist doesn't show message when added tFileList

Anonymous — Thu, 25 Oct 2018 21:45:05 GMT

NOTE: The option "Generate Error if no file found" hasn't been selected in tFileList.

Re: tFileExist doesn't show message when added tFileList

Ganshyam — Fri, 26 Oct 2018 07:42:11 GMT

Hello,

Check the If condition on tfilelist component global variable nb_file.

((Integer)globalMap.get("tFileList_1_NB_FILE")) <= 0

Regards

Ganshyam

Re: tFileExist doesn't show message when added tFileList

Anonymous — Sun, 28 Oct 2018 23:51:49 GMT

Thanks a lot. Yea missed to try this formula. Appreciated