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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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/*
 * Copyright (c) 2017, 2018 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 org.glassfish.jersey.inject.hk2;

import java.lang.annotation.Annotation;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.glassfish.jersey.internal.inject.ForeignDescriptor;
import org.glassfish.jersey.process.internal.RequestScope;
import org.glassfish.jersey.process.internal.RequestScoped;

import org.glassfish.hk2.api.ActiveDescriptor;
import org.glassfish.hk2.api.Context;
import org.glassfish.hk2.api.ServiceHandle;
import org.glassfish.hk2.api.TypeLiteral;
import org.glassfish.hk2.utilities.binding.AbstractBinder;

/**
 * Class is able to communicate with {@link RequestScope} and provide request-scoped descriptors to HK2 DI provider to create or
 * destroy instances.
 */
@Singleton
public class RequestContext implements Context {

    private final RequestScope requestScope;

    @Inject
    public RequestContext(RequestScope requestScope) {
        this.requestScope = requestScope;
    }

    @Override
    public Class getScope() {
        return RequestScoped.class;
    }

    @Override
    public  U findOrCreate(ActiveDescriptor activeDescriptor, ServiceHandle root) {
        Hk2RequestScope.Instance instance = (Hk2RequestScope.Instance) requestScope.current();

        U retVal = instance.get(ForeignDescriptor.wrap(activeDescriptor));
        if (retVal == null) {
            retVal = activeDescriptor.create(root);
            instance.put(ForeignDescriptor.wrap(activeDescriptor, obj -> activeDescriptor.dispose((U) obj)), retVal);
        }
        return retVal;
    }

    @Override
    public boolean containsKey(ActiveDescriptor descriptor) {
        Hk2RequestScope.Instance instance = (Hk2RequestScope.Instance) requestScope.current();
        return instance.contains(ForeignDescriptor.wrap(descriptor));
    }

    @Override
    public boolean supportsNullCreation() {
        return true;
    }

    @Override
    public boolean isActive() {
        return requestScope.isActive();
    }

    @Override
    public void destroyOne(ActiveDescriptor descriptor) {
        Hk2RequestScope.Instance instance = (Hk2RequestScope.Instance) requestScope.current();
        instance.remove(ForeignDescriptor.wrap(descriptor));
    }

    @Override
    public void shutdown() {
        requestScope.shutdown();
    }

    /**
     * Request scope injection binder.
     */
    public static class Binder extends AbstractBinder {

        @Override
        protected void configure() {
            bindAsContract(RequestContext.class)
                    .to(new TypeLiteral>() {}.getType())
                    .in(Singleton.class);
        }
    }
}