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Make @SimpleBuilder @Inherited to match documentation (#244) - #247

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AndreasIgel merged 10 commits into
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fix/issue-244-simplebuilder-inherited
Aug 15, 2026
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Make @SimpleBuilder @Inherited to match documentation (#244)#247
AndreasIgel merged 10 commits into
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fix/issue-244-simplebuilder-inherited

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The class-level Javadoc and docs/CONFIGURATION.md implied that @SimpleBuilder is inherited by subclasses, but the annotation was not meta-annotated with @inherited. As a result BuilderProcessor, which collects types via RoundEnvironment.getElementsAnnotatedWith(...), only produced builders for the exact type carrying @SimpleBuilder and not for unannotated subclasses.

Add @inherited to @SimpleBuilder so subclasses are treated as if they also carried the annotation, mirroring the existing behaviour of @SimpleBuilder.Template (which is already @inherited). Update the Javadoc to document the inheritance explicitly and clarify the CONFIGURATION.md wording. @Ignore4BuilderGeneration still suppresses generation for the exact type it is placed on, so opt-outs continue to work as before.

Add SimpleBuilderInheritanceTest covering direct inheritance, the opt-out interaction, and multi-level (grandchild) inheritance.

Closes #244

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The class-level Javadoc and docs/CONFIGURATION.md implied that
@SimpleBuilder is inherited by subclasses, but the annotation was not
meta-annotated with @inherited. As a result BuilderProcessor, which
collects types via RoundEnvironment.getElementsAnnotatedWith(...),
only produced builders for the exact type carrying @SimpleBuilder and
not for unannotated subclasses.

Add @inherited to @SimpleBuilder so subclasses are treated as if they
also carried the annotation, mirroring the existing behaviour of
@SimpleBuilder.Template (which is already @inherited). Update the
Javadoc to document the inheritance explicitly and clarify the
CONFIGURATION.md wording. @Ignore4BuilderGeneration still suppresses
generation for the exact type it is placed on, so opt-outs continue
to work as before.

Add SimpleBuilderInheritanceTest covering direct inheritance, the
opt-out interaction, and multi-level (grandchild) inheritance.

Closes #244

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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AndreasIgel and others added 4 commits August 15, 2026 11:01
…ance

Rename SimpleBuilderInheritanceTest to BuilderAnnotationInheritanceTest
so the name reflects that it covers both builder-triggering annotations.
Add unannotatedSubclassGetsBuilderFromInheritedTemplate, which verifies
that a custom @inherited template annotation (meta-annotated with
@SimpleBuilder.Template) propagates to unannotated subclasses, matching
the existing behaviour of @SimpleBuilder itself.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The Template Javadoc and CONFIGURATION.md "Template Annotations" section
did not explain that @SimpleBuilder.Template is @inherited, nor that a
custom template annotation must additionally declare @inherited to
propagate to unannotated subclasses. Add explicit documentation and an
example showing the @inherited custom annotation pattern.

Also move assertNoBuilderGenerated to ProcessorAsserts so it is shared
by BuilderAnnotationInheritanceTest and Ignore4BuilderGenerationTest
instead of being duplicated as a private helper in each test class.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
@AndreasIgel
AndreasIgel force-pushed the fix/issue-244-simplebuilder-inherited branch from ac0f5d4 to aca9ef6 Compare August 15, 2026 09:18
AndreasIgel and others added 5 commits August 15, 2026 11:20
While @SimpleBuilder and @inherited template annotations now correctly
trigger builder generation for unannotated subclasses, the configuration
options declared on the parent's @SimpleBuilder(options = ...) or template
are not yet applied to inherited subclass builders — they use default
options instead. This is tracked separately in issue #245.

Add caveats to the SimpleBuilder Javadoc, the CONFIGURATION.md Template
Annotations section, and the Template Annotations Not Working
troubleshooting section so users are not surprised by this limitation.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Add explicit guidance that @SimpleBuilder.Template is a meta-annotation
for custom annotation declarations (@interface) only and cannot be
placed directly on a class or record. @SimpleBuilder is for direct
one-off annotation of classes/records.

- SimpleBuilder.java: add 'When to use' section to class-level Javadoc
- SimpleBuilder.Template Javadoc: state it can only be placed on
  annotation types (ANNOTATION_TYPE), not on classes/records
- CONFIGURATION.md 'Template Annotations': add comparison table and
  introductory paragraph
- CONFIGURATION.md troubleshooting: add item about @SimpleBuilder.Template
  not being a class annotation

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
…arget

The compiler and IDE already enforce @target(ANNOTATION_TYPE) and show
a clear error when @SimpleBuilder.Template is placed on a class/record,
so this troubleshooting item adds no value.

Generated with [Devin](https://devin.ai)

Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
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@AndreasIgel
AndreasIgel merged commit 6736c35 into main Aug 15, 2026
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@AndreasIgel
AndreasIgel deleted the fix/issue-244-simplebuilder-inherited branch August 15, 2026 19:19
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Documentation/Javadoc implies @SimpleBuilder is inherited, but it is not

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