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• ContainerProvider.java

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org.glassfish.jersey.server.spi.ContainerProvider Maven / Gradle / Ivy

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2013 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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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 */
package org.glassfish.jersey.server.spi;

import javax.ws.rs.ConstrainedTo;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.RuntimeType;

import org.glassfish.jersey.server.ApplicationHandler;
import org.glassfish.jersey.spi.Contract;

/**
 * Service-provider interface for creating container instances.
 *
 * If supported by the provider, a container instance of the requested Java type
 * will be created.
 * 

 * The created container is responsible for listening on a communication chanel
 * for new client requests, dispatching these requests to the registered
 * {@link ApplicationHandler Jersey application handler} using the handler's
 * {@link ApplicationHandler#apply(org.glassfish.jersey.server.ContainerRequest)}
 * apply(requestContext)} method and sending the responses provided by the
 * application back to the client.
 * 

 * A provider shall support a one-to-one mapping between a type that is not of
 * the type Object. A provider may support
 * more than one one-to-one mapping or a mapping of sub-types of a type
 * (that is not of the type Object). A provider shall not conflict with other
 * providers.
 * 

 * An implementation (a service-provider) identifies itself by registering a proper
 * HK2 {@code ContainterProvider} contract binding in a custom HK2 binder configured
 * in the Jersey application handler.
 * Alternatively, the implementation can identify itself by placing a provider-configuration
 * file (if not already present), {@code org.glassfish.jersey.server.spi.ContainerProvider}
 * in the resource directory META-INF/services, and adding the fully
 * qualified service-provider-class of the implementation in the file.
 *
 *
 * @author Paul Sandoz
 * @author Jakub Podlesak (jakub.podlesak at oracle.com)
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
@Contract
@ConstrainedTo(RuntimeType.SERVER)
public interface ContainerProvider {

    /**
     * Create an container of a given type.
     * 

     * The container provider SHOULD NOT initiate the web application. The container
     * provider MAY modify the resource configuration.
     *
     * @param  the type of the container.
     *
     * @return the container, otherwise null if the provider does not support
     *     the requested {@code type}.
     * @param type the type of the container.
     * @param appHandler the Web application handler the container delegates to
     *     for the handling of HTTP requests.
     * @throws ProcessingException if there is an error creating the container.
     */
    public  T createContainer(Class type, ApplicationHandler appHandler) throws ProcessingException;
}