public class InjectionManagerProvider extends Object
injection manager
from various JAX-RS components. This class can be used when no injection is possible by
Context
or Inject
annotation due to character of
provider but there is a need to get any service from InjectionManager
.
Injections are not possible for example when a provider is registered as an instance on the client. In this case the runtime will not inject the instance as this instance might be used in other client runtimes too.
Example. This is the class using a standard injection:
public static class MyWriterInterceptor implements WriterInterceptor { @Inject MyInjectedService service; @Override public void aroundWriteTo(WriterInterceptorContext context) throws IOException, WebApplicationException { Something something = service.getSomething(); ... } }
If this injection is not possible then this construct can be used:
public static class MyWriterInterceptor implements WriterInterceptor { @Override public void aroundWriteTo(WriterInterceptorContext context) throws IOException, WebApplicationException { InjectionManager injectionManager = InjectionManagerProvider.getInjectionManager(context); MyInjectedService service = injectionManager.getInstance(MyInjectedService.class); Something something = service.getSomething(); ... } }
Note, that this injection support is intended mostly for injection of custom user types. JAX-RS types are usually available without need for injections in method parameters. However, when injection of custom type is needed it is preferred to use standard injections if it is possible rather than injection support provided by this class.
User returned InjectionManager
only for purpose of getting services (do not change the state of the injection manager).
Constructor and Description |
---|
InjectionManagerProvider() |
Modifier and Type | Method and Description |
---|---|
static InjectionManager |
getInjectionManager(FeatureContext featureContext)
Extract and return injection manager from
featureContext . |
static InjectionManager |
getInjectionManager(ReaderInterceptorContext readerInterceptorContext)
Extract and return injection manager from
readerInterceptorContext . |
static InjectionManager |
getInjectionManager(WriterInterceptorContext writerInterceptorContext)
Extract and return injection manager from
writerInterceptorContext . |
public static InjectionManager getInjectionManager(WriterInterceptorContext writerInterceptorContext)
writerInterceptorContext
.
The method can be used to inject custom types into a WriterInterceptor
.writerInterceptorContext
- Writer interceptor context.IllegalArgumentException
- when writerInterceptorContext
is not a default
Jersey implementation provided by Jersey as argument in the
WriterInterceptor.aroundWriteTo(jakarta.ws.rs.ext.WriterInterceptorContext)
method.public static InjectionManager getInjectionManager(ReaderInterceptorContext readerInterceptorContext)
readerInterceptorContext
.
The method can be used to inject custom types into a ReaderInterceptor
.readerInterceptorContext
- Reader interceptor context.IllegalArgumentException
- when readerInterceptorContext
is not a default
Jersey implementation provided by Jersey as argument in the
ReaderInterceptor.aroundReadFrom(jakarta.ws.rs.ext.ReaderInterceptorContext)
method.public static InjectionManager getInjectionManager(FeatureContext featureContext)
featureContext
.
The method can be used to inject custom types into a Feature
.
Note that features are utilized during initialization phase when not all providers are registered yet. It is undefined which injections are already available in this phase.
featureContext
- Feature context.IllegalArgumentException
- when writerInterceptorContext
is not a default
Jersey instance provided by Jersey
in Feature.configure(jakarta.ws.rs.core.FeatureContext)
method.Copyright © 2007-2024, Oracle and/or its affiliates. All Rights Reserved. Use is subject to license terms.