e30c9b2ef3
Spring Framework 4.2 RC1 introduced support for synthesizing an annotation from an existing annotation in order to provide additional functionality above and beyond that provided by Java. Specifically, such synthesized annotations provide support for @AliasFor semantics. As luck would have it, the same principle can be used to synthesize an annotation from any map of attributes, and in particular, from an instance of AnnotationAttributes. The following highlight the major changes in this commit toward achieving this goal. - Introduced AnnotationAttributeExtractor abstraction and refactored SynthesizedAnnotationInvocationHandler to delegate to an AnnotationAttributeExtractor. - Extracted code from SynthesizedAnnotationInvocationHandler into new AbstractAliasAwareAnnotationAttributeExtractor and DefaultAnnotationAttributeExtractor implementation classes. - Introduced MapAnnotationAttributeExtractor for synthesizing an annotation that is backed by a map or AnnotationAttributes instance. - Introduced a variant of synthesizeAnnotation() in AnnotationUtils that accepts a map. - Introduced findAnnotation(*) methods in AnnotatedElementUtils that synthesize merged AnnotationAttributes back into an annotation of the target type. The following classes have been refactored to use the new support for synthesizing AnnotationAttributes back into an annotation. - ApplicationListenerMethodAdapter - TestAnnotationUtils - AbstractTestContextBootstrapper - ActiveProfilesUtils - ContextLoaderUtils - DefaultActiveProfilesResolver - DirtiesContextTestExecutionListener - TestPropertySourceAttributes - TestPropertySourceUtils - TransactionalTestExecutionListener - MetaAnnotationUtils - MvcUriComponentsBuilder - RequestMappingHandlerMapping In addition, this commit also includes changes to ensure that arrays returned by synthesized annotations are properly cloned first. Issue: SPR-13067
Spring Framework
The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications -- on any kind of deployment platform. A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.
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