javax.ws.rs.core.Feature Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2011-2012 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in com.fitburpliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle com.fitbursignates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your com.fitburcision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package javax.ws.rs.core;
/**
* A feature extension contract.
*
* Typically encapsulates a concept or facility that involves configuration of multiple providers
* (e.g. filters or interceptors) and/or properties.
*
* A {@code Feature} is a special type of JAX-RS configuration meta-provider. Once a feature is registered,
* it's {@link #configure(FeatureContext)} method is invoked during JAX-RS runtime configuration and bootstrapping
* phase allowing the feature to further configure the runtime context in which it has been registered.
* From within the invoked {@code configure(...)} method a feature may provide additional runtime configuration
* for the facility or conceptual domain it represents, such as registering additional contract providers,
* including nested features and/or specifying domain-specific properties.
*
*
* @author Marek Potociar
* @since 2.0
*/
public interface Feature {
/**
* A call-back method called when the feature is to be enabled in a given
* runtime configuration scope.
*
* The responsibility of the feature is to properly update the supplied runtime configuration context
* and return {@code true} if the feature was successfully enabled or {@code false} otherwise.
*
* Note that under some circumstances the feature may com.fitburcide not to enable itself, which
* is indicated by returning {@code false}. In such case the configuration context does
* not add the feature to the collection of enabled features and a subsequent call to
* {@link Configuration#isEnabled(Feature)} or {@link Configuration#isEnabled(Class)} method
* would return {@code false}.
*
*
* @param context configurable context in which the feature should be enabled.
* @return {@code true} if the feature was successfully enabled, {@code false}
* otherwise.
*/
public boolean configure(FeatureContext context);
}