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41ded4740e
datatypes/epc/domain/mapper.py's from_rdsap_schema_{17_0,17_1,18_0,19_0,
20_0_0,21_0_0} all stored a lodged sap_windows[].glazing_type verbatim
instead of routing it through _api_cascade_glazing_type (which
_api_sap_window, used by 21_0_1, already does correctly). The raw API code
is the RdSAP-21 glazing enum (e.g. code 1 = "DG pre-2002"), not the SAP
10.2 Table 6b cascade enum the calculator's U/g-value tables are keyed on
(cascade code 1 = single glazed) -- so any lodged window whose raw code
happened to collide with a different cascade meaning was silently
mis-rated.
Found while validating PR #1503 (property 753950 / uprn 100021969385)
against Elmhurst: our engine's windows_w_per_k was 82.27 vs Elmhurst's
51.44 -- the dwelling's larger window (91% of glazed area) lodges raw
glazing_type=1 and was being modelled as single glazed instead of double,
the dominant contributor to a SAP 42 vs Elmhurst 44 gap. Fixing this
narrows windows_w_per_k to 50.26 (Elmhurst 51.44, ~2% off) and moves the
engine's score to 43.
Extracted the 5 duplicated reduced-schema-window blocks (17.0/17.1/18.0/
19.0/20.0.0, which lodge a minimal window shape with no glazing_gap/
frame_factor/transmission fields) into a shared _reduced_field_api_sap_
window helper that also now populates window_transmission_details/
frame_factor via the SAP10 lookup instead of leaving them None. 21.0.0's
richer inline block gets the same one-line cascade fix.
+6 regression tests (one per affected schema seam + 21.0.0). Full domain/
schema/prediction/comparable-properties/sap10_calculator/modelling_e2e
suites pass (2746 passed, only the 2 pre-existing unrelated failures);
component-accuracy gate 26/26 unaffected.
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|---|---|---|
| .. | ||
| domain | ||
| loaders | ||
| schema | ||
| search | ||
| surveys | ||
| __init__.py | ||
| construction_age_band.py | ||
| efficiency.py | ||
| floor.py | ||
| fuel.py | ||
| heating_controls.py | ||
| hotwater.py | ||
| main_heating.py | ||
| property_type_built_form.py | ||
| roof.py | ||
| walls.py | ||
| windows.py | ||