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Reject cyclical SDL directive definitions by andimarek · Pull Request #4385 · graphql-java/graphql-java · GitHub

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Reject cyclical SDL directive definitions - #4385

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andimarek merged 1 commit into
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reproduce-4201-cyclical-directives
May 19, 2026
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Reject cyclical SDL directive definitions#4385
andimarek merged 1 commit into
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reproduce-4201-cyclical-directives

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andimarek commented May 18, 2026

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Summary

  • Detect indirect cycles between SDL directive definitions before schema generation.
  • Preserve the existing direct self-reference error while adding a cycle-aware message for indirect references.
  • Add checker-level and schema-generation regression coverage for Improper handling of cyclical directive defs (spec issue) #4201.

Fixes #4201

Testing

  • ./gradlew test --tests graphql.schema.idl.SchemaTypeDirectivesCheckerTest --tests graphql.schema.idl.SchemaGeneratorTest."Improper handling of cyclical directive defs (spec issue) #4201 indirect cyclical directive definitions are rejected without stack overflow"
  • ./gradlew clean test --tests graphql.archunit.JMHForkArchRuleTest
  • ./gradlew test

github-actions Bot commented May 18, 2026 •
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Test Report

Test Results

Java Version Total Passed Failed Errors Skipped
Java 11 5797 (+4 🟢) 5741 (+4 🟢) 0 (±0) 0 (±0) 56 (±0)
Java 17 5797 (+4 🟢) 5740 (+4 🟢) 0 (±0) 0 (±0) 57 (±0)
Java 21 5797 (+4 🟢) 5740 (+4 🟢) 0 (±0) 0 (±0) 57 (±0)
Java 25 5797 (+4 🟢) 5740 (+4 🟢) 0 (±0) 0 (±0) 57 (±0)
jcstress 32 (±0) 32 (±0) 0 (±0) 0 (±0) 0 (±0)
Total 23220 (+16 🟢) 22993 (+16 🟢) 0 (±0) 0 (±0) 227 (±0)

Code Coverage (Java 25)

Metric Covered Missed Coverage vs Master
Lines 29480 3102 90.5% ±0.0%
Branches 8627 1507 85.1% ±0.0%
Methods 7887 1209 86.7% ±0.0%

No per-class coverage changes detected.

Full HTML report: build artifact jacoco-html-report

Updated: 2026-05-18 23:57:30 UTC

bbakerman reviewed May 18, 2026
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Comment thread src/main/java/graphql/schema/idl/SchemaTypeDirectivesChecker.java Outdated
for (DirectiveDefinition directiveDefinition : directiveDefinitions) {
result.putIfAbsent(directiveDefinition.getName(), directiveDefinition);
}
return result;

bbakerman May 18, 2026

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Use graphql.util.FpKit#getByName(java.util.List<T>, java.util.function.Function<T,java.lang.String>, java.util.function.BinaryOperator<T>)

Less code

andimarek May 18, 2026

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Done in c58ab2a. I replaced the hand-written directiveDefinitionsByName(...) map builder with FpKit#getByName(..., mergeFirst()), preserving the existing first-definition-wins behavior while removing the extra helper code.

bbakerman reviewed May 18, 2026
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Comment thread src/main/java/graphql/schema/idl/SchemaTypeDirectivesChecker.java
for (DirectiveDefinition directiveDefinition : directiveDefinitions) {
result.put(directiveDefinition.getName(), directiveReferences(directiveDefinition, directiveDefinitionsByName));
}
return result;

bbakerman May 18, 2026

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

I think you can use graphql.util.FpKit#getByName(java.util.List, java.util.function.Function<T,java.lang.String>, java.util.function.BinaryOperator)

andimarek May 18, 2026

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Done in c58ab2a. directiveReferencesByName(...) now consumes the map produced by FpKit#getByName(..., mergeFirst()) instead of rebuilding the directive-definition map itself, so the cycle checker uses the shared local utility as suggested.

andimarek force-pushed the reproduce-4201-cyclical-directives branch 2 times, most recently from 179dacf to b2b2d8f Compare May 18, 2026 23:45
andimarek force-pushed the reproduce-4201-cyclical-directives branch from b2b2d8f to c58ab2a Compare May 18, 2026 23:48
andimarek mentioned this pull request May 19, 2026
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andimarek merged commit a943664 into master May 19, 2026
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andimarek mentioned this pull request Aug 20, 2026
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Improper handling of cyclical directive defs (spec issue)

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