javax.ws.rs.container

## Interface DynamicFeature

-     public interface DynamicFeature

  A JAX-RS meta-provider for dynamic registration of post-matching providers during a JAX-RS application setup at deployment time. Dynamic feature is used by JAX-RS runtime to register providers that shall be applied to a particular resource class and method and overrides any annotation-based binding definitions defined on any registered resource filter or interceptor instance.

  Providers implementing this interface MAY be annotated with `@Provider` annotation in order to be discovered by JAX-RS runtime when scanning for resources and providers. This provider types is supported only as part of the Server API.

  Since:
    2.0
  Author:
    Santiago Pericas-Geertsen, Bill Burke, Marek Potociar
  See Also:
    `NameBinding`

- - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `void` | `configure(ResourceInfo resourceInfo, FeatureContext context)` A callback method called by the JAX-RS runtime during the application deployment to register provider instances or classes in a `runtime configuration` scope of a particular `resource or sub-resource method`; i.e.

- - ### Method Detail

    - #### configure

          void configure(ResourceInfo resourceInfo,
                       FeatureContext context)

      A callback method called by the JAX-RS runtime during the application deployment to register provider instances or classes in a `runtime configuration` scope of a particular `resource or sub-resource method`; i.e. the providers that should be dynamically bound to the method.

      The registered provider instances or classes are expected to be implementing one or more of the following interfaces:

      - `ContainerRequestFilter`
      - `ContainerResponseFilter`
      - `ReaderInterceptor`
      - `WriterInterceptor`
      - `Feature`

      A provider instance or class that does not implement any of the interfaces above may be ignored by the JAX-RS implementation. In such case a `warning` message must be logged. JAX-RS implementations may support additional provider contracts that can be registered using a dynamic feature concept.

      Conceptually, this callback method is called during a `resource or sub-resource method` discovery phase (typically once per each discovered resource or sub-resource method) to register provider instances or classes in a `configuration` scope of each particular method identified by the supplied `resource information`. The responsibility of the feature is to properly update the supplied `configuration` context.

      Parameters:
        `resourceInfo` - resource class and method information.
        `context` - configurable resource or sub-resource method-level runtime context associated with the `resourceInfo` in which the feature

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