[RF][HS3] Don't let evauation artifacts demote top-level pdfs in the export - #23224
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The HS3 exporter and `RooJSONFactoryWSTool::cleanWS()` used `!hasClients()` as the criterion for "this pdf or function is a top-level object of the workspace". But RooFit also registers objects that live outside the workspace as clients: the normalization integral that `RooAbsPdf` caches after `getVal(normSet)`, or the integral returned by `createIntegral()`. A single normalized evaluation before the export therefore silently produced a document without any distributions, domains or parameter values, while `exportJSON()` still returned `true`. Only count clients that are actually components of the workspace, since these are the ones that make an object a sub-node of a bigger model. Closes root-project#23221. 🤖 Done with the help of AI
Behaviour-preserving cleanup of roofit/hs3, motivated by keeping the line count in check after the fix for root-project#23221: * Build error messages with string concatenation instead of a `std::stringstream` whose only purpose is to feed `error()`, and drop the `return`s after `error()`, which is `[[noreturn]]`. * Share the "find the category observable" loop between the two dataset export functions, and the name-index construction between "functions" and "distributions". * HistFactory: factor out the repeated modifier node creation and the constraint queueing loops, drop the unreachable "optionally" branch of `optionallyExportGammaParameters()` (`forceExport` was always true), merge `hasStaterror()` into `findStaterror()`, and drop a `std::map` presence check that `operator[]` already covers. * RooFitCore: `readBinning()` reimplemented `RooJSONFactoryWSTool::readAxes()`, the RealSumPdf/RealSumFunc importer and exporter pairs are now templates, `writePolynomialBody()` is inlined into its single caller, and the manual `push_back` loops use the existing `operator<<` for JSON sequences. * Drop unused includes and dead locals. Verified that the exported JSON for HistFactory, RealSum, Polynomial, Spline and ParamHistFunc models is byte-identical before and after. 🤖 Done with the help of AI
Test Results 23 files 23 suites 3d 18h 53m 59s ⏱️ For more details on these failures, see this check. Results for commit 7053a31. |
dpiparo
self-requested a review
September 2, 2026 07:06
dpiparo
approved these changes
Sep 2, 2026
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/backport to 6.40 |
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Preparing to backport PR #23224 to branch 6.40 requested by guitargeek |
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This PR has been backported to branch 6.40: #23229 |
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The HS3 exporter and
RooJSONFactoryWSTool::cleanWS()used!hasClients()as the criterion for "this pdf or function is a top-level object of the workspace". But RooFit also registers objects that live outside the workspace as clients: the normalization integral thatRooAbsPdfcaches aftergetVal(normSet), or the integral returned bycreateIntegral(). A single normalized evaluation before the export therefore silently produced a document without any distributions, domains or parameter values, whileexportJSON()still returnedtrue.Only count clients that are actually components of the workspace, since these are the ones that make an object a sub-node of a bigger model.
Closes #23221.
🤖 Done with the help of AI
A second commit does some refactors to keep the total number of lines of code under control.