@AliasFor attribute name should default to declaring attribute [SPR-13828]

[spring-projects-issues]

Juergen Hoeller opened SPR-13828 and commented

@AliasFor currently insists on the attribute name to be specified, through either attribute or value. For references to same-named attributes on meta-annotations, the attribute name could easily default to the declaring attribute. A typical use case is creating custom @Value annotations with a mirrored value attribute (#18181).

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Affects: 4.2.4

Issue Links:

• @Value cannot be used as aliased meta-annotation [SPR-13603] #18181 @Value cannot be used as aliased meta-annotation

Referenced from: commits 3242ad8

[spring-projects-issues]

Juergen Hoeller commented

As a consequence, we throw an exception in case of a reference to the same attribute now, suggesting to point either to a specific meta-annotation or to a different attribute name. The default attribute name is the declaring attribute now but the exception will be thrown in case of an explicit reference to the same attribute on the same annotation as well.

[spring-projects-issues]

Sam Brannen commented

That's a nice convention to support.

Thanks, Juergen Hoeller! (y)