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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.Singleton;

import org.glassfish.jersey.internal.inject.ForeignDescriptorImpl;
import org.glassfish.jersey.internal.inject.InjecteeImpl;
import org.glassfish.jersey.internal.util.ReflectionHelper;

import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.api.Injectee;
import org.glassfish.hk2.api.InjectionResolver;
import org.glassfish.hk2.api.ServiceHandle;

/**
 * This class wraps the jersey class {@link org.glassfish.jersey.internal.inject.InjectionResolver} to make HK2 version of this
 * provided functionality. HK2 {@link InjectionResolver} can be then register in {@link org.glassfish.hk2.api.ServiceLocator} and
 * HK2 can handle the annotation which is register along with the interface.
 */
@Singleton
public class InjectionResolverWrapper implements InjectionResolver {

    private final org.glassfish.jersey.internal.inject.InjectionResolver jerseyResolver;

    /**
     * C'tor accepts jersey-like {@code InjectionResolver} on which the the processing is delegated.
     *
     * @param jerseyResolver jersey injection resolver.
     */
    InjectionResolverWrapper(org.glassfish.jersey.internal.inject.InjectionResolver jerseyResolver) {
        this.jerseyResolver = jerseyResolver;
    }

    @Override
    public Object resolve(Injectee injectee, ServiceHandle root) {
        InjecteeImpl injecteeWrapper = new InjecteeImpl();
        injecteeWrapper.setRequiredType(injectee.getRequiredType());
        injecteeWrapper.setParent(injectee.getParent());
        injecteeWrapper.setRequiredQualifiers(injectee.getRequiredQualifiers());
        injecteeWrapper.setOptional(injectee.isOptional());
        injecteeWrapper.setPosition(injectee.getPosition());
        injecteeWrapper.setFactory(ReflectionHelper.isSubClassOf(injectee.getRequiredType(), Factory.class));
        injecteeWrapper.setInjecteeDescriptor(new ForeignDescriptorImpl(injectee.getInjecteeDescriptor()));

        Object instance = jerseyResolver.resolve(injecteeWrapper);
        if (injecteeWrapper.isFactory()) {
            return asFactory(instance);
        } else {
            return instance;
        }
    }

    private Factory asFactory(Object instance) {
        return new Factory() {
            @Override
            public Object provide() {
                return instance;
            }

            @Override
            public void dispose(final Object instance) {
            }
        };
    }

    @Override
    public boolean isConstructorParameterIndicator() {
        return jerseyResolver.isConstructorParameterIndicator();
    }

    @Override
    public boolean isMethodParameterIndicator() {
        return jerseyResolver.isMethodParameterIndicator();
    }
}