[jira] [Created] (CAY-1955) add support jsr-250 and jsr330 to DI

["Friederich Christophe (JIRA)" <ji...@apache.org>]

Friederich Christophe created CAY-1955:
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             Summary: add support jsr-250 and jsr330 to DI
                 Key: CAY-1955
                 URL: https://issues.apache.org/jira/browse/CAY-1955
             Project: Cayenne
          Issue Type: Improvement
          Components: Core Library
            Reporter: Friederich Christophe
            Priority: Minor


h4. Add partial *JSR-250* lifecycle annotations support:
* {{@PostConstruct}} is used on methods that need to get executed after dependency injection is done to perform any initialization.
* {{@PreDestroy}} is used on methods that are called before the instance is removed from the container

h4. Add partial *JSR-330* dependency injector annotations support
* {{@Inject}} identifies injectable constructors, methods, and fields.
* {{@Named}} type named.
* {{@Provider<T>}} Provides instances of T.
* {{@Scope}} Identifies scope annotations.
* {{@Singleton}} Identifies a type that the injector only instantiates once.
* {{-@Qualifier-}} not implemented.

h4. Deprecate _org.apache.cayenne.di.Inject_ annotion and _org.apache.cayenne.di.Provider_ interface

h4. add {{lazy}}/{{eager}} singleton instantiation
- {{lazy}} is default implementation.
- {{earger}} allows initializing singleton upon cayenne run-time started, exceptions will occur at start-up time vs first be used and avoids any delay when the service provided is requested the first time.




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