javax.ws.rs.core.Configuration Maven / Gradle / Ivy
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/*
* Copyright (c) 2012, 2017 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package javax.ws.rs.core;
import javax.ws.rs.RuntimeType;
import java.util.Collection;
import java.util.Map;
import java.util.Set;
/**
* A configuration state associated with a {@link Configurable configurable} context.
* Defines the components as well as additional meta-data for the configured context.
*
* A configuration state may be used to retrieve configuration information about
* of the associated context (e.g. application, resource method, etc.) or component
* (e.g. {@link javax.ws.rs.client.Client}, {@link javax.ws.rs.client.WebTarget}, etc.).
* Configuration information consists of properties, registered component classes
* and/or instances.
*
*
* This interface can be injected using the {@link Context} annotation.
*
*
* @author Marek Potociar
* @since 2.0
*/
public interface Configuration {
/**
* Get the runtime type of this configuration context.
*
* @return configuration context runtime type.
*/
public RuntimeType getRuntimeType();
/**
* Get the immutable bag of configuration properties.
*
* @return the immutable view of configuration properties.
*/
public Map getProperties();
/**
* Get the value for the property with a given name.
*
* @param name property name.
* @return the property value for the specified property name or {@code null}
* if the property with such name is not configured.
*/
public Object getProperty(String name);
/**
* Returns an immutable {@link java.util.Collection collection} containing the
* property names available within the context of the current configuration instance.
*
* Use the {@link #getProperty} method with a property name to get the value of
* a property.
*
*
* @return an immutable {@link java.util.Collection collection} of property names.
* @see #getProperty
*/
public Collection getPropertyNames();
/**
* Check if a particular {@link Feature feature} instance has been previously
* enabled in the runtime configuration context.
*
* Method returns {@code true} only in case an instance equal to the {@code feature}
* instance is already present among the features previously successfully enabled in
* the configuration context.
*
*
* @param feature a feature instance to test for.
* @return {@code true} if the feature instance has been previously enabled in this
* configuration context, {@code false} otherwise.
*/
public boolean isEnabled(Feature feature);
/**
* Check if a {@link Feature feature} instance of {@code featureClass} class has been
* previously enabled in the runtime configuration context.
*
* Method returns {@code true} in case any instance of the {@code featureClass} class is
* already present among the features previously successfully enabled in the configuration
* context.
*
*
* @param featureClass a feature class to test for.
* @return {@code true} if a feature of a given class has been previously enabled in this
* configuration context, {@code false} otherwise.
*/
public boolean isEnabled(Class featureClass);
/**
* Check if a particular API {@code component} instance (such as providers or
* {@link Feature features}) has been previously registered in the runtime configuration context.
*
* Method returns {@code true} only in case an instance equal to the {@code component}
* instance is already present among the components previously registered in the configuration
* context.
*
*
* @param component a component instance to test for.
* @return {@code true} if the component instance has been previously registered in this
* configuration context, {@code false} otherwise.
* @see #isEnabled(Feature)
*/
public boolean isRegistered(Object component);
/**
* Check if a component of the supplied {@code componentClass} class has been previously
* registered in the runtime configuration context.
*
* Method returns {@code true} in case a component of the supplied {@code componentClass} class
* is already present among the previously registered component classes or instances
* in the configuration context.
*
*
* @param componentClass a component class to test for.
* @return {@code true} if a component of a given class has been previously registered in this
* configuration context, {@code false} otherwise.
* @see #isEnabled(Class)
*/
public boolean isRegistered(Class componentClass);
/**
* Get the extension contract registration information for a component of a given class.
*
* For component classes that are not configured in this configuration context the method returns
* an empty {@code Map}. Method does not return {@code null}.
*
* @return map of extension contracts and their priorities for which the component class
* is registered.
* May return an empty map in case the component has not been registered for any
* extension contract supported by the implementation.
*/
public Map, Integer> getContracts(Class componentClass);
/**
* Get the immutable set of registered component (such as provider or
* {@link Feature feature}) classes to be instantiated, injected and utilized in the scope
* of the configurable instance.
*
* For each component type, there can be only a single class-based or instance-based registration
* present in the configuration context at any given time.
*
*
* @return the immutable set of registered component classes. The returned
* value may be empty but will never be {@code null}.
* @see #getInstances
*/
public Set> getClasses();
/**
* Get the immutable set of registered component (such as provider or
* {@link Feature feature}) instances to be utilized by the configurable instance.
* Fields and properties of returned instances are injected with their declared dependencies
* (see {@link Context}) by the runtime prior to use.
*
* For each component type, there can be only a single class-based or instance-based registration
* present in the configuration context at any given time.
*
*
* @return the immutable set of registered component instances. The returned
* value may be empty but will never be {@code null}.
* @see #getClasses
*/
public Set