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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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    /*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2017 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:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package org.glassfish.jersey.internal.inject;

import java.lang.annotation.Annotation;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.stream.Collectors;

import javax.ws.rs.RuntimeType;

import javax.inject.Singleton;

import org.glassfish.jersey.model.ContractProvider;
import org.glassfish.jersey.model.internal.ComponentBag;

/**
 * Class used for registration of the custom providers into injection manager.
 * 
    
 * Custom providers are classes that implements specific JAX-RS or Jersey
 * SPI interfaces (e.g. {@link javax.ws.rs.ext.MessageBodyReader}) and are
 * supplied by the user. These providers will be bound into the injection manager
 * annotated by a {@link Custom @Custom} qualifier annotation.
 * 
    
 * 
    
 * Use the {@code @Custom} qualifier annotation to retrieve these providers
 * from injection manager. You may also use a one of the provider accessor utility
 * method defined in {@link Providers} class.
 * 
    
 *
 * @author Miroslav Fuksa
 * @author Marek Potociar (marek.potociar at oracle.com)
 * @author Michal Gajdos
 */
public class ProviderBinder {

    private final InjectionManager injectionManager;

    /**
     * Create new provider binder instance.
     *
     * @param injectionManager the binder will use to bind the providers into.
     */
    public ProviderBinder(final InjectionManager injectionManager) {
        this.injectionManager = injectionManager;
    }

    /**
     * Bind contract provider model to a provider class using the supplied injection manager.
     *
     * @param providerClass provider class.
     * @param model         contract provider model.
     */
    public static void bindProvider(Class providerClass, ContractProvider model, InjectionManager injectionManager) {
        injectionManager.register(CompositeBinder.wrap(createProviderBinders(providerClass, model)));
    }

    private static Collection createProviderBinders(Class providerClass, ContractProvider model) {
        /* Create a Binder of the Provider with the concrete contract. */
        Function binderFunction = contract -> new AbstractBinder() {
            @Override
            @SuppressWarnings("unchecked")
            protected void configure() {
                ClassBinding builder = bind(providerClass)
                        .in(model.getScope())
                        .qualifiedBy(CustomAnnotationLiteral.INSTANCE)
                        .to(contract);

                int priority = model.getPriority(contract);
                if (priority > ContractProvider.NO_PRIORITY) {
                    builder.ranked(priority);
                }
            }
        };

        /* Create Binders with all contracts and return their collection. */
        return model.getContracts().stream()
                .map(binderFunction)
                .collect(Collectors.toList());
    }

    /**
     * Bind contract provider model to a provider instance using the supplied injection manager.
     * 
    
     * Scope value specified in the {@link ContractProvider contract provider model}
     * is ignored as instances can only be bound as "singletons".
     *
     * @param providerInstance provider instance.
     * @param model            contract provider model.
     */
    public static void bindProvider(Object providerInstance, ContractProvider model, InjectionManager injectionManager) {
        injectionManager.register(CompositeBinder.wrap(createProviderBinders(providerInstance, model)));
    }

    private static Collection createProviderBinders(Object providerInstance, ContractProvider model) {
        /* Create a Binder of the Provider with the concrete contract. */
        Function binderFunction = contract -> new AbstractBinder() {
            @Override
            @SuppressWarnings("unchecked")
            protected void configure() {
                InstanceBinding builder = bind(providerInstance)
                        .qualifiedBy(CustomAnnotationLiteral.INSTANCE)
                        .to(contract);

                int priority = model.getPriority(contract);
                if (priority > ContractProvider.NO_PRIORITY) {
                    builder.ranked(priority);
                }
            }
        };

        /* Create Binders with all contracts and return their collection. */
        return model.getContracts().stream()
                .map(binderFunction)
                .collect(Collectors.toList());
    }

    /**
     * Bind all providers contained in {@code providerBag} (classes and instances) using injection manager. Configuration is
     * also committed.
     *
     * @param componentBag    bag of provider classes and instances.
     * @param injectionManager injection manager the binder will use to bind the providers into.
     */
    public static void bindProviders(final ComponentBag componentBag, final InjectionManager injectionManager) {
        bindProviders(componentBag, null, Collections.emptySet(), injectionManager);
    }

    /**
     * Bind all providers contained in {@code p roviderBag} (classes and instances) using injection manager. Configuration is
     * also committed.
     *
     * @param componentBag      bag of provider classes and instances.
     * @param constrainedTo     current runtime (client or server).
     * @param registeredClasses classes which are manually registered by the user (not found by the classpath scanning).
     * @param injectionManager  injection manager the binder will use to bind the providers into.
     */
    public static void bindProviders(ComponentBag componentBag,
                                     RuntimeType constrainedTo,
                                     Set> registeredClasses,
                                     InjectionManager injectionManager) {
        Predicate filter =
                input -> ComponentBag.EXCLUDE_EMPTY.test(input) && ComponentBag.EXCLUDE_META_PROVIDERS.test(input);

        /*
         * Check the {@code component} whether it is correctly configured for client or server {@link RuntimeType runtime}.
         */
        Predicate> correctlyConfigured =
                componentClass -> Providers.checkProviderRuntime(
                        componentClass,
                        componentBag.getModel(componentClass),
                        constrainedTo,
                        registeredClasses == null || !registeredClasses.contains(componentClass),
                        false);

        /*
         * These binder will be register to Bean Manager at the and of method because of a bulk registration to avoid register
         * each binder alone.
         */
        Collection binderToRegister = new ArrayList<>();

        // Bind provider classes except for pure meta-providers and providers with empty contract models (e.g. resources)
        Set> classes = new LinkedHashSet<>(componentBag.getClasses(filter));
        if (constrainedTo != null) {
            classes = classes.stream()
                    .filter(correctlyConfigured)
                    .collect(Collectors.toSet());
        }
        for (final Class providerClass : classes) {
            final ContractProvider model = componentBag.getModel(providerClass);
            binderToRegister.addAll(createProviderBinders(providerClass, model));
        }

        // Bind pure provider instances except for pure meta-providers and providers with empty contract models (e.g. resources)
        Set instances = componentBag.getInstances(filter);
        if (constrainedTo != null) {
            instances = instances.stream()
                    .filter(component -> correctlyConfigured.test(component.getClass()))
                    .collect(Collectors.toSet());
        }
        for (final Object provider : instances) {
            final ContractProvider model = componentBag.getModel(provider.getClass());
            binderToRegister.addAll(createProviderBinders(provider, model));
        }

        injectionManager.register(CompositeBinder.wrap(binderToRegister));
    }

    @SuppressWarnings("unchecked")
    private static  Collection createInstanceBinders(T instance) {
        Function binderFunction = contract ->
                new AbstractBinder() {
                    @Override
                    protected void configure() {
                        bind(instance).to(contract).qualifiedBy(CustomAnnotationLiteral.INSTANCE);
                    }
                };

        return Providers.getProviderContracts(instance.getClass()).stream()
                .map(binderFunction)
                .collect(Collectors.toList());
    }

    /**
     * Register/bind custom provider instances. Registered providers will be handled
     * always as Singletons.
     *
     * @param instances custom provider instances.
     */
    public void bindInstances(final Iterable instances) {
        List instancesList = new ArrayList<>();
        instances.forEach(instancesList::add);
        bindInstances(instancesList);
    }

    /**
     * Register/bind custom provider instances. Registered providers will be handled
     * always as Singletons.
     *
     * @param instances custom provider instances.
     */
    public void bindInstances(final Collection instances) {
        List binders = instances.stream()
                .map(ProviderBinder::createInstanceBinders)
                .flatMap(Collection::stream)
                .collect(Collectors.toList());

        injectionManager.register(CompositeBinder.wrap(binders));
    }

    /**
     * Register/bind custom provider classes. Registered providers will be handled
     * always as Singletons unless annotated by {@link PerLookup}.
     *
     * @param classes custom provider classes.
     */
    public void bindClasses(final Class... classes) {
        bindClasses(Arrays.asList(classes), false);
    }

    /**
     * Register/bind custom provider classes. Registered providers will be handled
     * always as Singletons unless annotated by {@link PerLookup}.
     *
     * @param classes custom provider classes.
     */
    public void bindClasses(final Iterable> classes) {
        List> classesList = new ArrayList<>();
        classes.forEach(classesList::add);
        bindClasses(classesList, false);
    }

    /**
     * Register/bind custom provider classes. Registered providers will be handled
     * always as Singletons unless annotated by {@link PerLookup}.
     *
     * @param classes custom provider classes.
     */
    public void bindClasses(final Collection> classes) {
        bindClasses(classes, false);
    }

    /**
     * Register/bind custom provider classes that may also be resources. Registered
     * providers/resources will be handled always as Singletons unless annotated by
     * {@link PerLookup}.
     * 
    
     * 
    
     * If {@code bindAsResources} is set to {@code true}, the providers will also be bound
     * as resources.
     * 
    
     *
     * @param classes       custom provider classes.
     * @param bindResources if {@code true}, the provider classes will also be bound as
     *                      resources.
     */
    public void bindClasses(Collection> classes, boolean bindResources) {
        List binders = classes.stream()
                .map(clazz -> createClassBinders(clazz, bindResources))
                .collect(Collectors.toList());

        injectionManager.register(CompositeBinder.wrap(binders));
    }

    @SuppressWarnings("unchecked")
    private  Binder createClassBinders(Class clazz, boolean isResource) {
        final Class scope = getProviderScope(clazz);

        if (isResource) {
            return new AbstractBinder() {
                @Override
                protected void configure() {
                    ClassBinding descriptor = bindAsContract(clazz).in(scope);

                    for (Class contract : Providers.getProviderContracts(clazz)) {
                        descriptor.addAlias(contract.getName())
                                .in(scope.getName())
                                .qualifiedBy(CustomAnnotationLiteral.INSTANCE);
                    }
                }
            };
        } else {
            return new AbstractBinder() {
                @Override
                protected void configure() {
                    ClassBinding builder = bind(clazz).in(scope).qualifiedBy(CustomAnnotationLiteral.INSTANCE);
                    Providers.getProviderContracts(clazz).forEach(contract -> builder.to((Class) contract));
                }
            };
        }
    }

    private Class getProviderScope(final Class clazz) {
        Class hk2Scope = Singleton.class;
        if (clazz.isAnnotationPresent(PerLookup.class)) {
            hk2Scope = PerLookup.class;
        }
        return hk2Scope;
    }
}
    
    
    
    

    




    
    
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