@Configuration(proxyBeanMethods = false) cannot implement ImportAware

[eleftherias]

When a configuration class is annotated with @Configuration(proxyBeanMethods = false) and also implements ImportAware, the method setImportMetadata never gets called.

I have created a sample that demonstates this behaviour through a failing test
https://github.com/eleftherias/spring-import-aware-no-proxy/blob/master/src/test/java/com/example/importawarenoproxy/ImportAwareNoProxyApplicationTests.java

It seems to be cause by this line

spring-framework/spring-context/src/main/java/org/springframework/context/annotation/ConfigurationClassPostProcessor.java

Line 463 in c366e20

AnnotationMetadata importingClass = ir.getImportingClassFor(bean.getClass().getSuperclass().getName());

When a configuration class e.g BasicConfig is annotated with @Configuration the bean class is BasicConfig$$EnhancerBySpringCGLIB and the superclass name is BasicConfig.
However, when the class is annotated with @Configuration(proxyBeanMethods = false) the bean class is BasicConfig and the superclass is Object, which causes the importingClass to be null.

[jhoeller]

Well spotted, @eleftherias, and very timely!

[eleftherias]

Thanks for the fix, this solved our issue.