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• ResourceContext.java

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javax.ws.rs.container.ResourceContext Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 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 compliance 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 designates 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:
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 * elects to include this software in this distribution under the [CDDL or GPL
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 * either the CDDL, the GPL Version 2 or to extend the choice of license to
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package javax.ws.rs.container;

import javax.ws.rs.core.Context;

/**
 * The resource context provides access to instances of resource classes.
 * 

 * This interface can be injected using the {@link Context} annotation.
 * 
 * 

 * The resource context can be utilized when instances of managed resource
 * classes are to be returned by sub-resource locator methods. Such instances
 * will be injected and managed within the declared scope just like instances
 * of root resource classes.
 * 
 *
 * @author Marek Potociar
 */
public interface ResourceContext {

    /**
     * Get a resolved instance of a resource or sub-resource class.
     * 

     * The resolved resource instance is properly initialized in the context of the
     * current request processing scope. The scope of the resolved resource instance
     * depends on the managing container. For resources managed by JAX-RS container
     * the default scope is per-request.
     * 
     *
     * @param            the type of the resource class.
     * @param resourceClass the resource class.
     * @return an instance if it could be resolved, otherwise {@code null}.
     */
    public  T getResource(Class resourceClass);

    /**
     * Initialize the resource or sub-resource instance.
     *
     * All JAX-RS injectable fields in the resource instance will be properly initialized in
     * the context of the current request processing scope.
     *
     * @param       resource instance type.
     * @param resource resource instance.
     * @return initialized (same) resource instance.
     */
    public  T initResource(T resource);
}