topic Chech delimited file if it's empty in Talend Studio

Chech delimited file if it's empty

pawe84 — Fri, 09 Aug 2019 14:58:51 GMT

How I can check if a delimited file is empty except the headline?

Let say this is an csv output but nothing has been appended:

Column1|Column2

If I use tfileExist the condition is always true because the file exists because of the header.

Thanks for any advice.

Re: Chech delimited file if it's empty

Anonymous — Fri, 09 Aug 2019 15:13:58 GMT

Hi,

The most easy way is to read the file and send the output to a tAggregateRow component. Create an output column which will calculate the total count of records. If the value is not zero, it means you have data else its empty file.

Warm Regards,
Nikhil Thampi

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Re: Chech delimited file if it's empty

TRF — Sat, 10 Aug 2019 13:02:08 GMT

tFileRowCount with the option "Ignore empty rows" is a solution.

If row count is > 1 (((Integer)globalMap.get("tFileRowCount_1_COUNT")) > 1) then the file contains the header line + at least 1 non empty line.