public interface BeanContextServiceProvider
One of the primary functions of a BeanContext is to act a as rendezvous between JavaBeans, and BeanContextServiceProviders.
A JavaBean nested within a BeanContext, may ask that BeanContext to provide an instance of a "service", based upon a reference to a Java Class object that represents that service.
If such a service has been registered with the context, or one of its nesting context's, in the case where a context delegate to its context to satisfy a service request, then the BeanContextServiceProvider associated with the service is asked to provide an instance of that service.
The ServcieProvider may always return the same instance, or it may construct a new instance for each request.
|Modifier and Type||Method and Description|
Object getService(BeanContextServices bcs, Object requestor, Class serviceClass, Object serviceSelector)
BeanContextServices, this method requests an instance of a service from this
BeanContextServicesassociated with this particular request. This parameter enables the
BeanContextServiceProviderto distinguish service requests from multiple sources.
requestor- The object requesting the service
serviceClass- The service requested
serviceSelector- the service dependent parameter for a particular service, or
nullif not applicable.
void releaseService(BeanContextServices bcs, Object requestor, Object service)
BeanContextServices, this method releases a nested
BeanContextChild's (or any arbitrary object associated with a
BeanContextChild) reference to the specified service.
BeanContextServicesassociated with this particular release request
requestor- the object requesting the service to be released
service- the service that is to be released
Iterator getCurrentServiceSelectors(BeanContextServices bcs, Class serviceClass)
BeanContextServices, this method gets the current service selectors for the specified service. A service selector is a service specific parameter, typical examples of which could include: a parameter to a constructor for the service implementation class, a value for a particular service's property, or a key into a map of existing implementations.
BeanContextServicesfor this request
serviceClass- the specified service