SONARJAVA-6412 Implement Visitor for grouping beans per types

[NoemieBenard]

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Summary by Gitar

• New features:
  • Added TypeToBeanNamesIndexGatherer to map type hierarchies of Spring beans to bean names
• Refactorings:
  • Extracted Spring bean and method name resolution helpers into SpringUtils
• Tests:
  • Added comprehensive unit tests in TypeToBeanNamesIndexGathererTest covering stereotype and @Bean methods

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[hashicorp-vault-sonar-prod]

SONARJAVA-6412

[gitar-bot]

Code Review ✅ Approved 2 resolved / 2 findings

Implements a visitor to group Spring beans by their type and extracts resolution helpers into SpringUtils, addressing the resolveStereotypeBeanName null-guard and dropped name aliases findings.

✅ 2 resolved

✅ Edge Case: resolveStereotypeBeanName lacks null-guard on annotation value

📄 java-frontend/src/main/java/org/sonar/java/utils/SpringUtils.java:105-109 📄 java-frontend/src/main/java/org/sonar/java/utils/SpringUtils.java:134
In SpringUtils.resolveStereotypeBeanName the stream does .map(v -> (String) v.value()) followed by .filter(s -> !s.isBlank()) with no null check, so a null annotation value would throw NPE. The sibling method resolveBeanMethodName guards this with s != null && !s.isBlank(). Although a null value is unlikely from the semantic model, make the two methods consistent by filtering nulls (e.g. .filter(s -> s != null && !s.isBlank())).

✅ Quality: @Bean/stereotype name aliases beyond the first are dropped

📄 java-frontend/src/main/java/org/sonar/java/utils/SpringUtils.java:122-136 📄 java-frontend/src/main/java/org/sonar/java/utils/SpringUtils.java:101-115 📄 java-frontend/src/main/java/org/sonar/java/model/springcontext/TypeToBeanNamesIndexGatherer.java:55-64
resolveBeanMethodName returns only arr[0] for @Bean(name={"a","b"}), and resolveStereotypeBeanName returns a single name. Spring treats additional entries as bean aliases, so the type-to-bean-names index will not contain those aliases and lookups by an alias name will miss the bean. If alias-based resolution is in scope for this index, register all names; otherwise this is acceptable and could be documented.

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[sonarqube-next]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
44 Dependency risks
91.7% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube

[datadog-sonarsource]

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