javax.ws.rs.core.Application Maven / Gradle / Ivy
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package javax.ws.rs.core;
import java.util.Collections;
import java.util.Map;
import java.util.Set;
/**
* Defines the components of a JAX-RS application and supplies additional
* meta-data. A JAX-RS application or implementation supplies a concrete
* subclass of this abstract class.
*
* The implementation-created instance of an Application subclass may be
* injected into resource classes and providers using
* {@link javax.ws.rs.core.Context}.
*
*
* In case any of the {@code Application} subclass methods or it's constructor
* throws a {@link RuntimeException}, the deployment of the application SHOULD
* be aborted with a failure.
*
*
* @author Paul Sandoz
* @author Marc Hadley
* @author Marek Potociar
* @since 1.0
*/
public class Application {
/**
* Get a set of root resource, provider and {@link Feature feature} classes.
*
* The default life-cycle for resource class instances is per-request. The default
* life-cycle for providers (registered directly or via a feature) is singleton.
*
* Implementations should warn about and ignore classes that do not
* conform to the requirements of root resource or provider/feature classes.
* Implementations should warn about and ignore classes for which
* {@link #getSingletons()} returns an instance. Implementations MUST
* NOT modify the returned set.
*
*
* The default implementation returns an empty set.
*
*
* @return a set of root resource and provider classes. Returning {@code null}
* is equivalent to returning an empty set.
*/
public Set> getClasses() {
return Collections.emptySet();
}
/**
* Get a set of root resource, provider and {@link Feature feature} instances.
*
* Fields and properties of returned instances are injected with their declared
* dependencies (see {@link Context}) by the runtime prior to use.
*
* Implementations should warn about and ignore classes that do not
* conform to the requirements of root resource or provider classes.
* Implementations should flag an error if the returned set includes
* more than one instance of the same class. Implementations MUST
* NOT modify the returned set.
*
*
* The default implementation returns an empty set.
*
*
* @return a set of root resource and provider instances. Returning {@code null}
* is equivalent to returning an empty set.
*/
public Set