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

import java.lang.annotation.Annotation;
import java.util.Collections;
import java.util.Set;

import javax.ws.rs.RuntimeType;

import javax.inject.Singleton;

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

import org.glassfish.hk2.api.ActiveDescriptor;
import org.glassfish.hk2.api.DynamicConfiguration;
import org.glassfish.hk2.api.PerLookup;
import org.glassfish.hk2.api.ServiceLocator;
import org.glassfish.hk2.utilities.AliasDescriptor;
import org.glassfish.hk2.utilities.BuilderHelper;
import org.glassfish.hk2.utilities.binding.ScopedBindingBuilder;

import jersey.repackaged.com.google.common.base.Predicate;
import jersey.repackaged.com.google.common.collect.Sets;

/**
 * Class used for registration of the custom providers into HK2 service locator.
 * 

 * 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 HK2 service locator
 * annotated by a {@link Custom @Custom} qualifier annotation.
 * 

 * 

 * Use the {@code @Custom} qualifier annotation to retrieve these providers
 * from HK2 service locator. 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 (michal.gajdos at oracle.com)
 */
public class ProviderBinder {

    private final ServiceLocator locator;

    /**
     * Create new provider binder instance.
     *
     * @param locator HK2 service locator the binder will use to bind the
     *                providers into.
     */
    public ProviderBinder(final ServiceLocator locator) {
        this.locator = locator;
    }

    /**
     * Register/bind custom provider instances. Registered providers will be handled
     * always as Singletons.
     *
     * @param instances custom provider instances.
     */
    public void bindInstances(final Iterable instances) {
        final DynamicConfiguration dc = Injections.getConfiguration(locator);
        for (final Object instance : instances) {
            bindInstance(instance, dc);
        }
        dc.commit();
    }

    /**
     * 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) {
        if (classes != null && classes.length > 0) {
            final DynamicConfiguration dc = Injections.getConfiguration(locator);
            for (final Class clazz : classes) {
                bindClass(clazz, locator, dc, false);
            }
            dc.commit();
        }
    }

    /**
     * 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) {
        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(final Iterable> classes, final boolean bindResources) {
        if (classes == null || !classes.iterator().hasNext()) {
            return;
        }

        final DynamicConfiguration dc = Injections.getConfiguration(locator);
        for (final Class clazz : classes) {
            bindClass(clazz, locator, dc, bindResources);
        }
        dc.commit();
    }

    /**
     * Bind contract provider model to a provider class using the supplied HK2 dynamic configuration.
     *
     * @param providerClass provider class.
     * @param model      contract provider model.
     * @param dc            HK2 dynamic service locator configuration.
     */
    public static void bindProvider(
            final Class providerClass, final ContractProvider model, final DynamicConfiguration dc) {

        for (final Class contract : model.getContracts()) {
            final ScopedBindingBuilder bindingBuilder = Injections.newBinder(providerClass)
                    .in(model.getScope())
                    .qualifiedBy(new CustomAnnotationImpl());

            //noinspection unchecked
            bindingBuilder.to(contract);

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

            Injections.addBinding(bindingBuilder, dc);
        }
    }

    /**
     * Bind contract provider model to a provider instance using the supplied
     * HK2 dynamic configuration.
     *
     * 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.
     * @param dc               HK2 dynamic service locator configuration.
     */
    public static void bindProvider(
            final Object providerInstance, final ContractProvider model, final DynamicConfiguration dc) {

        for (final Class contract : model.getContracts()) {
            final ScopedBindingBuilder bindingBuilder = Injections
                    .newBinder(providerInstance).qualifiedBy(new CustomAnnotationImpl());

            //noinspection unchecked
            bindingBuilder.to(contract);

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

            Injections.addBinding(bindingBuilder, dc);
        }
    }

    /**
     * Bind all providers contained in {@code providerBag} (classes and instances) using HK2 service locator. Configuration is
     * also committed.
     *
     * @param componentBag bag of provider classes and instances.
     * @param locator      HK2 service locator the binder will use to bind the providers into.
     */
    public static void bindProviders(final ComponentBag componentBag, final ServiceLocator locator) {
        bindProviders(componentBag, null, Collections.>emptySet(), locator);
    }

    /**
     * Bind all providers contained in {@code providerBag} (classes and instances) using HK2 service locator. 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 locator           HK2 service locator the binder will use to bind the providers into.
     */
    public static void bindProviders(final ComponentBag componentBag,
                                     final RuntimeType constrainedTo,
                                     final Set> registeredClasses,
                                     final ServiceLocator locator) {
        final DynamicConfiguration dc = Injections.getConfiguration(locator);
        bindProviders(componentBag, constrainedTo, registeredClasses, dc);
        dc.commit();
    }

    /**
     * Bind all providers contained in {@code providerBag} (classes and instances) using HK2 service locator. Configuration is
     * not 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 dynamicConfiguration HK2 dynamic service locator configuration.
     */
    public static void bindProviders(final ComponentBag componentBag,
                                     final RuntimeType constrainedTo,
                                     final Set> registeredClasses,
                                     final DynamicConfiguration dynamicConfiguration) {
        final Predicate filter = new Predicate() {
            @Override
            public boolean apply(final ContractProvider input) {
                return ComponentBag.EXCLUDE_EMPTY.apply(input) && ComponentBag.EXCLUDE_META_PROVIDERS.apply(input);
            }
        };

        // Bind provider classes except for pure meta-providers and providers with empty contract models (e.g. resources)
        Set> classes = Sets.newLinkedHashSet(componentBag.getClasses(filter));
        if (constrainedTo != null) {
            classes = Sets.filter(classes, new Predicate>() {
                @Override
                public boolean apply(final Class componentClass) {
                    return Providers.checkProviderRuntime(
                            componentClass,
                            componentBag.getModel(componentClass),
                            constrainedTo,
                            registeredClasses == null || !registeredClasses.contains(componentClass),
                            false);
                }
            });
        }
        for (final Class providerClass : classes) {
            final ContractProvider model = componentBag.getModel(providerClass);
            ProviderBinder.bindProvider(providerClass, model, dynamicConfiguration);
        }

        // 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 = Sets.filter(instances, new Predicate() {
                @Override
                public boolean apply(final Object component) {
                    final Class componentClass = component.getClass();
                    return Providers.checkProviderRuntime(
                            componentClass,
                            componentBag.getModel(componentClass),
                            constrainedTo,
                            registeredClasses == null || !registeredClasses.contains(componentClass),
                            false);
                }
            });
        }
        for (final Object provider : instances) {
            final ContractProvider model = componentBag.getModel(provider.getClass());
            ProviderBinder.bindProvider(provider, model, dynamicConfiguration);
        }
    }

    @SuppressWarnings("unchecked")
    private  void bindInstance(final T instance, final DynamicConfiguration dc) {
        for (final Class contract : Providers.getProviderContracts(instance.getClass())) {
            Injections.addBinding(Injections.newBinder(instance).to(contract).qualifiedBy(new CustomAnnotationImpl()), dc);
        }
    }

    @SuppressWarnings("unchecked")
    private  void bindClass(final Class clazz,
                               final ServiceLocator locator,
                               final DynamicConfiguration dc,
                               final boolean isResource) {
        final Class scope = getProviderScope(clazz);

        if (isResource) {
            final ActiveDescriptor descriptor = dc.bind(BuilderHelper.activeLink(clazz).to(clazz).in(scope).build());

            for (final Class contract : Providers.getProviderContracts(clazz)) {
                final AliasDescriptor aliasDescriptor = new AliasDescriptor(locator, descriptor, contract.getName(), null);
                aliasDescriptor.setScope(scope.getName());
                aliasDescriptor.addQualifierAnnotation(new CustomAnnotationImpl());

                dc.bind(aliasDescriptor);
            }
        } else {
            final ScopedBindingBuilder bindingBuilder =
                    Injections.newBinder(clazz).in(scope).qualifiedBy(new CustomAnnotationImpl());
            for (final Class contract : Providers.getProviderContracts(clazz)) {
                bindingBuilder.to(contract);
            }
            Injections.addBinding(bindingBuilder, dc);
        }
    }

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















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