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Talend Open Studio Cookbook by Rick Barton

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Reloads going missing at each row global variable

When using reload at each row with globalMap Key (as seen in the next screenshot), Talend allows you to cut and paste expressions into the globalMap variable, but when you go out of the tMap component and come back in again, you will see that it hasn't changed.

Reloads going missing at each row global variable

How to do it...

To get around this, you have one of two options:

  1. Drag the field from an input source. This option is limited, in that the expression will be just the field name, so you cannot apply any other logic to the variable, such as substring or uppercase.
  2. The second (and preferred option) is to edit the expression in the Expression editor ...

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