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package javax.ws.rs.ext;

/**
 * Contract for a provider that supplies context information to resource
 * classes and other providers.
 *
 * A {@code ContextResolver} implementation may be annotated
 * with {@link javax.ws.rs.Produces} to restrict the media types for
 * which it will be considered suitable.
 * 

* Providers implementing {@code ContextResolver} contract must be either programmatically * registered in a JAX-RS runtime or must be annotated with * {@link javax.ws.rs.ext.Provider @Provider} annotation to be automatically discovered * by the JAX-RS runtime during a provider scanning phase. *

* * @param type of the context * @author Paul Sandoz * @author Marc Hadley * @see javax.ws.rs.core.Context * @see Providers#getContextResolver(Class, javax.ws.rs.core.MediaType) * @see Provider * @see javax.ws.rs.Produces * @since 1.0 */ public interface ContextResolver { /** * Get a context of type {@code T} that is applicable to the supplied * type. * * @param type the class of object for which a context is desired * @return a context for the supplied type or {@code null} if a * context for the supplied type is not available from this provider. */ T getContext(Class type); }




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