topic Re: Add unique identifer while merging the files in Talend Studio

Add unique identifer while merging the files

Anonymous — Thu, 14 Mar 2019 19:27:35 GMT

Hello Friends,

I am doing data integration project using Talend. I have a requirement to merge multiple country feeds to one. Every file corresponds to one country, but the file doesn't have any identifier inside the file.

It can be identified by file name which is unique per country. I used tFileList to merge multiple files, but not finding a way to add unique identifier to every file, so that I can identify country on merged feed.

Example:-

en-US, en-CA, fr-CA are the feeds

is there a way to do that?

Regards,

Mahesh

Re: Add unique identifer while merging the files

Anonymous — Thu, 14 Mar 2019 20:11:08 GMT

When you read the file you will be using a tFileList variable to get the filename and path. You can use

((String)globalMap.get("tFileList_1_CURRENT_FILE")) to retrieve the filename and then add your identifier column using that data.

Re: Add unique identifer while merging the files

Anonymous — Thu, 14 Mar 2019 20:34:29 GMT

I used tFielList --> tFileInputDelimited --> tFileOutputDelimited.

I see variable ((String)globalMap.get("tFileList_1_CURRENT_FILEPATH")), but not seeing any option to add that with expression to new column

Do I need to use any other component in the flow?

Re: Add unique identifer while merging the files

vapukov — Thu, 14 Mar 2019 22:00:34 GMT

Hi,

you can use tMap or tJavaRow for this, both allow you to add new column and assign a value to it

Re: Add unique identifer while merging the files

Anonymous — Fri, 15 Mar 2019 20:31:54 GMT

Thank you. tMap worked.

On tMap, I was looking for expression builder on left side columns which is input instead of right hand side columns.

Re: Add unique identifer while merging the files

Anonymous — Fri, 15 Mar 2019 20:32:46 GMT

Thank you tmap worked.