topic Re: Optimizing the use of CASE Statements in Talend Studio

Optimizing the use of CASE Statements

stephbzr — Fri, 15 Nov 2024 21:22:48 GMT

Hello,

I'm currently working on a project with Talend where I need to extract data from a file. I'm using a tFileInputDelimited component followed by a tJavaFlex component. One of the pieces of data contains a numeric code ranging from 1 to 100. Depending on this code, it should correspond to a specific string.

Creating 100 individual CASE blocks to handle the different cases seems impractical and not very efficient.

I'm seeking suggestions to optimize this process. Has anyone encountered a similar situation before? Are there best practices or alternative approaches that can be used to handle a large number of cases more efficiently?

Thank you.

Re: Optimizing the use of CASE Statements

Anonymous — Wed, 27 Sep 2023 05:24:49 GMT

Take a look at tReplaceList component, maybe you can create a mapping file and use this component to replace of case statement block.

Regards

Shong

Re: Optimizing the use of CASE Statements

Anonymous — Mon, 02 Oct 2023 11:43:22 GMT

How about creating a CSV file something like:

ID;String Value

then use tMap and join this with the main dataflow of yours.

Later it's enough to handle the CSV file outside of the job.