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Injection of beans that implement interfaces with Generics without qualifier annotation [SPR-9836] #14469

spring-projects-issues opened this issue Sep 27, 2012 · 2 comments


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@spring-projects-issues spring-projects-issues commented Sep 27, 2012

Thomas Oellrich opened SPR-9836 and commented

I recently had a look at a new Dependency Injection framework called Dagger from Jesse Wilson at Square.

It has two cool features that I wish Spring had as well (will create a separate issue for the other feature). In Spring, when two classes implement the same generified interface, say Repository<T>, Spring cannot find the corresponding injection points (because of type erasure I guess). This requires the developer to add qualifier annotations which makes the code less readable. Dagger is somehow able to determine the injection points without qualifier annotations. It would be great if this feature could be added to Spring.

Affects: 3.1.2

Issue Links:

  • #14468 Detect beans when @Inject is present

1 votes, 5 watchers

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@spring-projects-issues spring-projects-issues commented Dec 28, 2018

Sébastien Deleuze commented

I guess that's because Dagger is a compile-time dependency injection framework.

Thomas Oellrich is this feature documented somewhere?

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@spring-projects-issues spring-projects-issues commented Jan 12, 2019

Bulk closing outdated, unresolved issues. Please, reopen if still relevant.

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