[DD4Hep] Tracker Phase II numeric special parameters need to be passed to an evaluator

[ianna]

Addressing thread-safety and performance. Showstopper for running 2026 DD4Hep workflows. Urgent.

In order to reduce the DD4Hep exposure to RECO all "special" numeric parameters must be marked with eval=true. This allows passing it to an evaluator at the time of the XML parsing. Further access to the parameters from DDFilteredView is get<double>

WARNING: If the parameter is not marked to be evaluated, it's treated as a string. Access to the string parameters via DDFilteredView get<double> is forbidden: currently a value 0 is returned, further restriction is being implemented to return NaN.

[cmsbuild]

A new Issue was created by @ianna Ianna Osborne.

@Dr15Jones, @dpiparo, @silviodonato, @smuzaffar, @makortel, @qliphy can you please review it and eventually sign/assign? Thanks.

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[makortel]

assign geometry

[cmsbuild]

New categories assigned: geometry

@Dr15Jones,@cvuosalo,@mdhildreth,@makortel,@ianna,@civanch you have been requested to review this Pull request/Issue and eventually sign? Thanks

[ghugo83]

Ha I see was done here for Phase 1, following recent change in FilteredView: 32a0c74#diff-7302cd669ba77ff993549a7ab094d7feac189f27ed543dd1970d854dd78b3c05
Gonna push a PR for Phase 2 today

[ghugo83]

Can close this issue.
Addressed in #32479 and #32843

[cvuosalo]

+1

[cmsbuild]

This issue is fully signed and ready to be closed.