[JBoss JIRA] Created: (CDI-6) Clarify InjectionTarget method parameters
by Jozef Hartinger (JIRA)
Clarify InjectionTarget method parameters
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Key: CDI-6
URL: https://jira.jboss.org/browse/CDI-6
Project: CDI Specification Issues
Issue Type: Task
Components: Specification
Affects Versions: 1.0
Reporter: Jozef Hartinger
For the inject() method, the spec says: "inject() performs dependency injection upon the given object". It is not clear to me what does the "given object" refer two. if the CDI implementation uses proxies to implement interceptors and decorators, I can see two candidates for "the given object":
- the product of the produce() method including interceptors and decorators -> a proxy
- the target instance -> the object created by calling a constructor (no interception/decoration)
Arguments for the first option
- Let's have and extension that adds additional dependency injection capabilities by providing a custom InjectionTarget implementation and wrapping default InjectionTarget instances with custom ones. The custom InjectionTarget implementation does the additional DI in the inject() method and delegates to the default InjectionTarget instance to finish the injection. This implementation needs a direct access to the target instance (it cannot access field values through a proxy)
- Interceptor-like behavior - similarity to interceptors, where the InvocationContext.getTarget() returns the (non-intercepted) target instance
Arguments for the second option
- the contract of the produce() method says: "produce() calls the constructor annotated @Inject if it exists, or the constructor with no parameters otherwise, as defined in Section 5.5.1, "Injection using the bean constructor", and returns the resulting instance. If the class has inter- ceptors, produce() is responsible for building the interceptors and decorators of the instance." which means it returns an intercepted/decorated instance.
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13 years, 3 months
[JBoss JIRA] Created: (CDI-3) Add add an event that fires after all ProcessAnnotatedType events that allows you to add new AnnotatedTypes
by Stuart Douglas (JIRA)
Add add an event that fires after all ProcessAnnotatedType events that allows you to add new AnnotatedTypes
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Key: CDI-3
URL: https://jira.jboss.org/browse/CDI-3
Project: CDI Specification Issues
Issue Type: Feature Request
Affects Versions: 1.0
Reporter: Stuart Douglas
At the moment AnnotatedTypes can only be added in the BeforeBeanDiscovery phase. This means that if you want to install additional beans based on the beans processed in the ProcessAnnotatedType phase you must instead add implementations of the Bean interface in the AfterBeanDiscovery phase. This interface is more limited than annotated type, and does not let you exactly mimic the behaviour of beans added as AnnotatedTypes.
Some of the things that the bean interface will not let you mimic are:
- Interceptors
- Disposal methods
- Producer fields for normal scoped beans
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13 years, 3 months
[JBoss JIRA] Created: (CDI-2) Interceptor bindings defined at method level should override those at the class level
by Pete Muir (JIRA)
Interceptor bindings defined at method level should override those at the class level
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Key: CDI-2
URL: https://jira.jboss.org/browse/CDI-2
Project: CDI Specification Issues
Issue Type: Bug
Components: Specification
Reporter: Pete Muir
We certainly *intended* for method-level interceptor bindings to override bindings declared at the class level, but whether we actually wrote that down is another story. It certainly doesn't look like that behavior is properly defined in the latest version of the spec.
In section 9.5.2 of the spec:
If the set of interceptor bindings of a bean or interceptor, including bindings inherited from stereotypes and other interceptor bindings, has two instances of a certain interceptor binding type and the instances have different values of some annotation member, the container automatically detects the problem and treats it as a definition error.
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13 years, 3 months