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GeezerVison is showing github.com — Fix error: Unusable type signature for overload of graphql.schema.SchemaTraverser::depthFirst #4147 by marktech0813 · Pull Request #4165 · graphql-java/graphql-java

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@marktech0813

@marktech0813 marktech0813 commented Nov 10, 2025 •
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I found the problematic overload in SchemaTraverser and updated its public API to accept the correct visitor type, ensuring it’s usable outside the class.

This removes the unusable public signature that referenced the private TraverserDelegateVisitor type. All existing internal calls (which pass new TraverserDelegateVisitor(...)) still work because that class implements TraverserVisitor.

Summary:

  • Changed SchemaTraverser.depthFirst(Traverser, TraverserDelegateVisitor, ...) to use TraverserVisitor instead, and adjusted the helper accordingly.
  • Public API is now usable by callers without referencing a private inner class; no behavior change for existing internal usage.

Contribution by Gittensor, learn more at https://gittensor.io/

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@marktech0813
Fix error: Unusable type signature for overload of graphql.schema.Sch…
7232a13
…emaTraverser::depthFirst graphql-java#4147

I found the problematic overload in SchemaTraverser and updated its public API to accept the correct visitor type, ensuring it’s usable outside the class.

This removes the unusable public signature that referenced the private TraverserDelegateVisitor type.
All existing internal calls (which pass new TraverserDelegateVisitor(...)) still work because that class implements TraverserVisitor<GraphQLSchemaElement>.

Summary:
- Changed SchemaTraverser.depthFirst(Traverser, TraverserDelegateVisitor, ...) to use TraverserVisitor<GraphQLSchemaElement> instead, and adjusted the helper accordingly.
- Public API is now usable by callers without referencing a private inner class; no behavior change for existing internal usage.
@bbakerman bbakerman added this to the 26.x milestone Nov 10, 2025
bbakerman
bbakerman approved these changes Nov 11, 2025
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@marktech0813
marktech0813 requested a review from bbakerman November 11, 2025 15:57
@dondonz dondonz modified the milestones: 26.x breaking changes, 25.1 bugfix & non-breaking changes Dec 4, 2025
@dondonz
dondonz merged commit fb5d1dd into graphql-java:master Dec 7, 2025
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@alf alf mentioned this pull request Jan 11, 2026
Unusable type signature for overload of graphql.schema.SchemaTraverser::depthFirst #4147
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@marktech0813 @bbakerman @dondonz
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