[Fusion] Do not apply @shareable to subscription root fields#9751
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tobias-tengler merged 1 commit intoMay 20, 2026
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Pull request overview
This PR updates Fusion v1 compatibility preprocessing so @shareable is not automatically applied to fields on the subscription root type, and adds a regression test to lock in the behavior.
Changes:
- Skip the subscription root type when applying inferred
@shareabledirectives during Fusion v1 compatibility preprocessing. - Add a unit test verifying that subscription root fields do not receive
@shareableeven when present in multiple source schemas.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.
| File | Description |
|---|---|
| src/HotChocolate/Fusion/src/Fusion.Composition/SourceSchemaPreprocessor.cs | Excludes schema.SubscriptionType from inferred @shareable application in v1 compatibility mode. |
| src/HotChocolate/Fusion/test/Fusion.Composition.Tests/SourceSchemaPreprocessorTests.cs | Adds regression coverage ensuring subscription root fields are not marked @shareable. |
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