Zooma seems to ignore the preferred datasource parameter

On RT the following issue has been logged (https://helpdesk.ebi.ac.uk/Ticket/Display.html?id=371346)

I noticed that ZOOMA appears to ignore the preferred datasource ordering specified in its parameters. This can be demonstrated using two datasources, which are both produced by us (EVA) after processing each OpenTargets batch:

eva-clinvar contains mappings, curated by ourselves, to ontologies such as are EFO, HP, ORDO and MONDO;
clinvar-xrefs contains mappings extracted directly from ClinVar data and maps terms to MedGen and OMIM ontologies.

It appears that no matter which datasource preference I specify, clinvar-xrefs is always preferred by ZOOMA. This is unfortunate, because for the purposes of OpenTargets processing we would like to prioritise existing eva-clinvar mappings.

Here's an example API query using only eva-clinvar datasource. An HP term with a HIGH confidence is returned from that datasource:

*$ curl -s --globoff "https://www.ebi.ac.uk/spot/zooma/v2/api/services/annotate?propertyValue=Reduced+antithrombin+III+activity*&filter=required:[eva-clinvar],preferred:[eva-clinvar]"* | jq '.[0]["semanticTags"][], .[0]["confidence"]'* "http://purl.obolibrary.org/obo/HP_0001976" "HIGH"

Here's the same query including eva-clinvar and clinvar-xrefs datasets. Despite eva-clinvar being explicitly prioritised over clinvar-xrefs, MedGen and OMIM terms from the latter are returned:

$ curl -s --globoff "https://www.ebi.ac.uk/spot/zooma/v2/api/services/annotate?propertyValue=Reduced+antithrombin+III+activity&filter=required:[eva-clinvar,clinvar-xrefs],preferred:[eva-clinvar,clinvar-xrefs]"* | jq '.[0]["semanticTags"][], .[0]["confidence"]'* "http://identifiers.org/medgen/C0272375" "http://identifiers.org/omim/613118" "HIGH"

EBISPOT / zooma

Zooma seems to ignore the preferred datasource parameter #37