[tkuhn]

Problem

A guided choice whose nt:possibleValuesFromApi points at EBI OLS under its current path shows no suggestions, e.g.

https://www.ebi.ac.uk/ols4/api/select?ontology=ncbitaxon&fieldList=iri,label,description&q=

There is no error. The field just stays empty. The same happens in the live template https://w3id.org/np/RAIV7ms4vqtxSccNNQvTT8uiSYGKCtpgUGgUD3O4MbG_U ("Expressing an association between an organism and a nucleotide sequence"), whose "choose the type of sample" field uses https://www.ebi.ac.uk/ols4/api/select?ontology=uberon&q=.

Cause

LookupApiRegistry sends only https://www.ebi.ac.uk/ols/api/select to OlsParser. An /ols4/ URL falls through to CanonicalParser. That parser looks for a top-level array of results with uri/@id fields, but OLS answers {"response": {"docs": [{"iri": …}]}}, so it finds nothing.

The old /ols/ path still works because EBI redirects it (301) to /ols4/, and the answer is the same.

Fix

OlsParser is now registered for both /ols/api/select and /ols4/api/select.

Tests

• LookupApiRegistryTest: new row checking that an /ols4/ URL is handled by OlsParser.
• LookupApis.getPossibleValues with the NCBITaxon URL above and the term mouse now returns 10 NCBITaxon terms with labels.
• On a local instance, the publish form of the template above now suggests UBERON terms (heart, cardiac muscle tissue, …) in "choose the type of sample" when you type heart.

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