Collection type resolver considering only lower bound of wildcard [SPR-5344]

[spring-projects-issues]

Tuomas Kiviaho opened SPR-5344 and commented

GenericCollectionTypeResolver.extractTypeFromParameterizedType seems to be returning lower bound of the wildcard. Hence DependencyDescriptor.getCollectionType for field List<? extends Shape> would return null instead of Shape. getCollectionType method seems to be only used with DefaultListableBeanFactory.findAutowireCandidates that matches against sub classes and wildcard usage as above doesn't seem to be working because Shape is upper bound of the wildcard.

Forum reference http://forum.springsource.org/showthread.php?p=215760

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Affects: 2.5.6

[spring-projects-issues]

Juergen Hoeller commented

Thanks for raising this! As of 3.0 M2, we're checking both the upper bound and the lower bound, trying to make the best of it...

Juergen