[Bug]: OneOf Directive is missed in Schema

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Bewertung

Schwierigkeit
3/5
Geschätzter Aufwand
1-2 Tage
Anfängerfreundlichkeit
53/100
Issue-Typ
Bug
Klarheit
Größtenteils klar
Aktivitätsstatus
Aktiv
Tech-Stack
csharp, graphql, postgresql
Bereich
api, databases

Rechercherichtung

Start by comparing GraphQL schema generation in version 2.1.5 with the earlier 1.6+ behavior described in the issue, focusing on how OneOf input types are represented. Reproduce with a PostgreSQL configuration containing a OneOf input type and inspect the generated schema. Done when the schema includes @oneOf on those input types.

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Beschreibung

bug triage
What happened?

Description :
The generated GraphQL schema is missing the @oneOf directive in the latest version of DAB. This functionality was working correctly in earlier versions (1.6+), where the schema correctly exposed OneOf input objects with the @oneOf directive.

Expected Behavior :
When generating the GraphQL schema, input objects configured as OneOf types should include the @oneOf directive in the schema output.

Actual Behavior:
The generated schema does not include the @oneOf directive

Impact :
GraphQL clients cannot discover OneOf semantics through schema introspection.
Schema does not accurately represent the intended input validation rules.
Potential interoperability issues with tooling that relies on the @oneOf directive.

Steps to Reproduce :
Configure an input type that should behave as a OneOf input.
Generate or inspect the GraphQL schema.
Observe that the @oneOf directive is not present on the input type.

Environment
Product: Data API Builder (DAB)
Previous Working Version: 1.6+
Current Version: Latest
Database: PostgreSQL
GraphQL Endpoint: Enabled

Additional Context

This behavior seems to be a regression introduced in a recent release. The same configuration generated schemas with the @oneOf directive in DAB 1.6+, but the directive is no longer emitted in the latest version

Version

2.1.5

What database are you using?

PostgreSQL

What hosting model are you using?

Static Web Apps (SWA), Container Apps

Which API approach are you accessing DAB through?

GraphQL

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