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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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package org.glassfish.jersey.server.internal.inject;

import javax.ws.rs.BeanParam;

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

import org.glassfish.hk2.api.ActiveDescriptor;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.utilities.AbstractActiveDescriptor;
import org.glassfish.hk2.utilities.BuilderHelper;
import org.glassfish.hk2.utilities.ServiceLocatorUtilities;
import org.glassfish.hk2.utilities.cache.Cache;
import org.glassfish.hk2.utilities.cache.Computable;

import org.glassfish.jersey.process.internal.RequestScoped;
import org.glassfish.jersey.server.model.Parameter;

/**
 * Value factory provider for {@link BeanParam bean parameters}.
 *
 * @author Miroslav Fuksa
 */
@Singleton
final class BeanParamValueFactoryProvider extends AbstractValueFactoryProvider {

    @Inject
    private ServiceLocator locator;

    /**
     * {@link InjectionResolver Injection resolver} for {@link BeanParam bean parameters}.
     */
    @Singleton
    static final class InjectionResolver extends ParamInjectionResolver {

        /**
         * Creates new resolver.
         */
        public InjectionResolver() {
            super(BeanParamValueFactoryProvider.class);
        }
    }

    private static final class BeanParamValueFactory extends AbstractContainerRequestValueFactory {
        private final Parameter parameter;
        private final ServiceLocator locator;

        private final Cache, ActiveDescriptor> descriptorCache
                = new Cache<>(new Computable, ActiveDescriptor>() {

                    @Override
                    public ActiveDescriptor compute(Class key) {
                        // below we make sure HK2 behaves as if injection happens into a request scoped type
                        // this is to avoid having proxies injected (see JERSEY-2386)
                        // before touching the following statement, check BeanParamMemoryLeakTest first!
                        final AbstractActiveDescriptor descriptor =
                                BuilderHelper.activeLink(key).to(key).in(RequestScoped.class).build();

                        return ServiceLocatorUtilities.addOneDescriptor(locator, descriptor, false);
                    }
                });

        private BeanParamValueFactory(ServiceLocator locator, Parameter parameter) {
            this.locator = locator;
            this.parameter = parameter;
        }

        @Override
        public Object provide() {

            final Class rawType = parameter.getRawType();

            final Object fromHk2 = locator.getService(rawType);
            if (fromHk2 != null) { // the bean parameter type is already bound in HK2, let's just take it from there
                return fromHk2;
            }
            ActiveDescriptor reifiedDescriptor = descriptorCache.compute(rawType);
            return locator.getServiceHandle(reifiedDescriptor).getService();
        }
    }

    /**
     * Creates new instance initialized from parameters injected by HK2.
     * @param mpep Multivalued parameter extractor provider.
     * @param injector HK2 Service locator.
     */
    @Inject
    public BeanParamValueFactoryProvider(MultivaluedParameterExtractorProvider mpep, ServiceLocator injector) {
        super(mpep, injector, Parameter.Source.BEAN_PARAM);
    }

    @Override
    public AbstractContainerRequestValueFactory createValueFactory(Parameter parameter) {
        return new BeanParamValueFactory(locator, parameter);
    }
}