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由 Sam Brannen 提交于
The initial support for synthesizing an annotation from a Map (or AnnotationAttributes) introduced in SPR-13067 required that the map contain key-value pairs for every attribute defined by the supplied annotationType. However, there are use cases that would benefit from being able to supply a reduced set of attributes and still have the annotation synthesized properly. This commit refines the validation mechanism in MapAnnotationAttributeExtractor so that a reduced set of attributes may be supplied. Specifically, if an attribute is missing in the supplied map the attribute will be set either to value of its alias (if an alias value configured via @AliasFor exists) or to the value of the attribute's default value (if defined), and otherwise an exception will be thrown. Furthermore, TransactionalTestExecutionListener has been refactored to take advantage of this new feature by synthesizing an instance of @TransactionConfiguration solely from the default values of its declared attributes. Issue: SPR-13087
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