[rules-users] Collect all occurrences of resulting data.

[Ephemeris Lappis]

Hello.

I'm looking for the better way to write a rule that collects data only when
they have been all processed.

For example, two input objects classes as facts : *Data* and *Category*.

I declare a local type to memorize the result of the evaluation for each
pair of fact.



Some rule evaluates the Cartesian product of all *Data* by all *Category* :



Now I want to collect all the results, but only when the previous rule has
been fired for all the data.
Something like :



Any advice ?

Thanks in advance for your help.

Regards.



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