Provide mechanism for injecting a Serializable Provider<T> or ObjectFactory<T> via XML [SPR-6998]

[spring-projects-issues]

Mike Youngstrom opened SPR-6998 and commented

This issue is related to #11417 though I think it should work for non EL situations as well. To fix this I would be happy if something like ObjectFactoryCreatingFactoryBean were created for the Provider<T> interface as well. And that both were enhanced to make the respective Provider or ObjectFactory serializable similar to what can be done with @Inject/@Autowired with #10747. That said if the decision were made to only support this through EL (#11417) that would be fine too though it may be less risky to simply make ObjectFactoryCreatingFactoryBean return a serializable ObjectFactory sooner?

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Affects: 3.0.1

Issue Links:

• Support EL together with Provider<T> Interface in XML configuration [SPR-6751] #11417 Support EL together with Provider Interface in XML configuration

Referenced from: commits 16eb915

[spring-projects-issues]

Juergen Hoeller commented

As of Spring 3.0.2, ObjectFactoryCreatingFactoryBean creates a serializable ObjectFactory reference. I've also added a ProviderCreatingFactoryBean, exposing a serializable JSR-330 Provider reference.

We'll use #11417 for tracking the general effort of detecting an ObjectFactory/Provider dependency with <property> and <constructor-arg>, populated with an external EL value or any other bean definition value. This is less trivial since bean definition values may have nested value structures...

Juergen