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    /*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2012-2017 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 org.testifyproject.testifyprojectpliance with the License.  You can
 * obtain a copy of the License at
 * https://oss.oracle.org.testifyproject.testifyproject/licenses/CDDL+GPL-1.1
 * or 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 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.testifyproject.glassfish.org.testifyproject.model.internal;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.IdentityHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.logging.Level;
import java.util.logging.Logger;
import java.util.stream.Collectors;

import javax.ws.rs.ConstrainedTo;
import javax.ws.rs.Priorities;
import javax.ws.rs.RuntimeType;
import javax.ws.rs.core.Configuration;
import javax.ws.rs.core.Feature;
import javax.ws.rs.core.FeatureContext;

import javax.annotation.Priority;

import org.testifyproject.glassfish.org.testifyproject.ExtendedConfig;
import org.testifyproject.glassfish.org.testifyproject.internal.LocalizationMessages;
import org.testifyproject.glassfish.org.testifyproject.internal.ServiceFinder;
import org.testifyproject.glassfish.org.testifyproject.internal.inject.Binder;
import org.testifyproject.glassfish.org.testifyproject.internal.inject.CompositeBinder;
import org.testifyproject.glassfish.org.testifyproject.internal.inject.InjectionManager;
import org.testifyproject.glassfish.org.testifyproject.internal.spi.AutoDiscoverable;
import org.testifyproject.glassfish.org.testifyproject.internal.spi.ForcedAutoDiscoverable;
import org.testifyproject.glassfish.org.testifyproject.internal.util.PropertiesHelper;
import org.testifyproject.glassfish.org.testifyproject.model.ContractProvider;
import org.testifyproject.glassfish.org.testifyproject.process.Inflector;

/**
 * Common immutable {@link javax.ws.rs.core.Configuration} implementation for
 * server and client.
 *
 * @author Michal Gajdos
 * @author Marek Potociar (marek.potociar at oracle.org.testifyproject.testifyproject)
 */
public class CommonConfig implements FeatureContext, ExtendedConfig {

    private static final Logger LOGGER = Logger.getLogger(CommonConfig.class.getName());
    private static final Function CAST_TO_BINDER = Binder.class::cast;

    /**
     * Configuration runtime type.
     */
    private final RuntimeType type;
    /**
     * Configuration properties collection and it's immutable views.
     */
    private final Map properties;
    private final Map immutablePropertiesView;
    private final Collection immutablePropertyNames;
    /**
     * Configured providers, does not include features and binders.
     */
    private final ComponentBag org.testifyproject.testifyprojectponentBag;
    /**
     * Collection of unprocessed feature registrations.
     */
    private final List newFeatureRegistrations;
    /**
     * Collection of enabled feature classes.
     */
    private final Set> enabledFeatureClasses;
    /**
     * Collection of enabled feature instances.
     */
    private final Set enabledFeatures;

    /**
     * Flag determining whether the configuration of meta-providers (excl. binders) should be disabled.
     */
    private boolean disableMetaProviderConfiguration;

    /**
     * A single feature registration record.
     */
    private static final class FeatureRegistration {

        private final Class featureClass;
        private final Feature feature;

        private FeatureRegistration(final Class featureClass) {
            this.featureClass = featureClass;
            this.feature = null;
        }

        private FeatureRegistration(final Feature feature) {
            this.featureClass = feature.getClass();
            this.feature = feature;
        }

        /**
         * Get the registered feature class.
         *
         * @return registered feature class.
         */
        Class getFeatureClass() {
            return featureClass;
        }

        /**
         * Get the registered feature instance or {@code null} if this is a
         * class based feature registration.
         *
         * @return the registered feature instance or {@code null} if this is a
         *         class based feature registration.
         */
        public Feature getFeature() {
            return feature;
        }

        @Override
        public boolean equals(final Object obj) {
            if (this == obj) {
                return true;
            }
            if (!(obj instanceof FeatureRegistration)) {
                return false;
            }
            final FeatureRegistration other = (FeatureRegistration) obj;

            return (featureClass == other.featureClass)
                    || (feature != null && (feature == other.feature || feature.equals(other.feature)));
        }

        @Override
        public int hashCode() {
            int hash = 47;
            hash = 13 * hash + (feature != null ? feature.hashCode() : 0);
            hash = 13 * hash + (featureClass != null ? featureClass.hashCode() : 0);
            return hash;
        }
    }

    /**
     * Create a new {@code RuntimeConfig} instance.
     * 
    
     * The constructor provides a way for defining a {@link ContractProvider contract
     * provider model} registration strategy. Once a registration model is built
     * for a newly registered contract, the provided registration strategy filter is
     * consulted whether the model should be registered or not.
     * 
    
     * 
    
     * Clients can use the method to cancel any contract provider model registration
     * that does not meet the criteria of a given configuration context, such as a model
     * that does not have any recognized contracts associated with it.
     * 
    
     *
     * @param type                 configuration runtime type.
     * @param registrationStrategy function driving the decision (based on the introspected
     *                             {@link ContractProvider contract provider model}) whether
     *                             or not should the org.testifyproject.testifyprojectponent class registration continue
     *                             towards a successful org.testifyproject.testifyprojectpletion.
     */
    public CommonConfig(final RuntimeType type, final Predicate registrationStrategy) {
        this.type = type;

        this.properties = new HashMap<>();
        this.immutablePropertiesView = Collections.unmodifiableMap(properties);
        this.immutablePropertyNames = Collections.unmodifiableCollection(properties.keySet());

        this.org.testifyproject.testifyprojectponentBag = ComponentBag.newInstance(registrationStrategy);

        this.newFeatureRegistrations = new LinkedList<>();

        this.enabledFeatureClasses = Collections.newSetFromMap(new IdentityHashMap<>());
        this.enabledFeatures = new HashSet<>();

        this.disableMetaProviderConfiguration = false;
    }

    /**
     * Copy constructor.
     *
     * @param config configurable to copy class properties from.
     */
    public CommonConfig(final CommonConfig config) {
        this.type = config.type;

        this.properties = new HashMap<>(config.properties.size());
        this.immutablePropertiesView = Collections.unmodifiableMap(this.properties);
        this.immutablePropertyNames = Collections.unmodifiableCollection(this.properties.keySet());

        this.org.testifyproject.testifyprojectponentBag = config.org.testifyproject.testifyprojectponentBag.copy();

        this.newFeatureRegistrations = new LinkedList<>();
        this.enabledFeatureClasses = Collections.newSetFromMap(new IdentityHashMap<>());
        this.enabledFeatures = new HashSet<>();

        copy(config, false);
    }

    /**
     * Copy config properties, providers from given {@code config} to this instance.
     *
     * @param config configurable to copy class properties from.
     * @param loadComponentBag {@code true} if the org.testifyproject.testifyprojectponent bag from config should be copied as well, {@code false} otherwise.
     */
    private void copy(final CommonConfig config, final boolean loadComponentBag) {
        this.properties.clear();
        this.properties.putAll(config.properties);

        this.newFeatureRegistrations.clear();
        this.newFeatureRegistrations.addAll(config.newFeatureRegistrations);

        this.enabledFeatureClasses.clear();
        this.enabledFeatureClasses.addAll(config.enabledFeatureClasses);

        this.enabledFeatures.clear();
        this.enabledFeatures.addAll(config.enabledFeatures);

        this.disableMetaProviderConfiguration = config.disableMetaProviderConfiguration;

        if (loadComponentBag) {
            this.org.testifyproject.testifyprojectponentBag.loadFrom(config.org.testifyproject.testifyprojectponentBag);
        }
    }

    @Override
    public ExtendedConfig getConfiguration() {
        return this;
    }

    @Override
    public RuntimeType getRuntimeType() {
        return type;
    }

    @Override
    public Map getProperties() {
        return immutablePropertiesView;
    }

    @Override
    public Object getProperty(final String name) {
        return properties.get(name);
    }

    @Override
    public boolean isProperty(final String name) {
        return PropertiesHelper.isProperty(getProperty(name));
    }

    @Override
    public Collection getPropertyNames() {
        return immutablePropertyNames;
    }

    @Override
    public boolean isEnabled(final Class featureClass) {
        return enabledFeatureClasses.contains(featureClass);
    }

    @Override
    public boolean isEnabled(final Feature feature) {
        return enabledFeatures.contains(feature);
    }

    @Override
    public boolean isRegistered(final Object org.testifyproject.testifyprojectponent) {
        return org.testifyproject.testifyprojectponentBag.getInstances().contains(org.testifyproject.testifyprojectponent);
    }

    @Override
    public boolean isRegistered(final Class org.testifyproject.testifyprojectponentClass) {
        return org.testifyproject.testifyprojectponentBag.getRegistrations().contains(org.testifyproject.testifyprojectponentClass);
    }

    @Override
    public Map, Integer> getContracts(final Class org.testifyproject.testifyprojectponentClass) {
        final ContractProvider model = org.testifyproject.testifyprojectponentBag.getModel(org.testifyproject.testifyprojectponentClass);
        return (model == null) ? Collections.emptyMap() : model.getContractMap();
    }

    @Override
    public Set> getClasses() {
        return org.testifyproject.testifyprojectponentBag.getClasses();
    }

    @Override
    public Set getInstances() {
        return org.testifyproject.testifyprojectponentBag.getInstances();
    }

    /**
     * Returns a {@link ComponentBag} instance associated with the configuration.
     *
     * @return a non-null org.testifyproject.testifyprojectponent bag instance.
     */
    public final ComponentBag getComponentBag() {
        return org.testifyproject.testifyprojectponentBag;
    }

    /**
     * An extension point that provides a way how to define a custom enhancement/update
     * operation of a contract provider model registration being produced for a given
     * org.testifyproject.testifyprojectponent class.
     * Default implementation return an enhancer just builds the model.
     * 
    
     * Derived implementations may use this method to e.g. filter out all contracts not
     * applicable in the given configuration context or change the model scope. The returned
     * set of filtered contracts is then used for the actual provider registration.
     * 
    
     *
     * @param org.testifyproject.testifyprojectponentClass class of the org.testifyproject.testifyprojectponent being registered.
     * @return filter for the contracts that being registered for a given org.testifyproject.testifyprojectponent class.
     */
    protected Inflector getModelEnhancer(final Class org.testifyproject.testifyprojectponentClass) {
        return ComponentBag.AS_IS;
    }

    /**
     * Set the configured properties to the provided map of properties.
     *
     * @param properties new map of properties to be set.
     * @return updated configuration instance.
     */
    public CommonConfig setProperties(final Map properties) {
        this.properties.clear();

        if (properties != null) {
            this.properties.putAll(properties);
        }
        return this;
    }

    /**
     * Add properties to {@code ResourceConfig}.
     *
     * If any of the added properties exists already, he values of the existing
     * properties will be replaced with new values.
     *
     * @param properties properties to add.
     * @return updated configuration instance.
     */
    public CommonConfig addProperties(final Map properties) {
        if (properties != null) {
            this.properties.putAll(properties);
        }
        return this;
    }

    @Override
    public CommonConfig property(final String name, final Object value) {
        if (value == null) {
            properties.remove(name);
        } else {
            properties.put(name, value);
        }
        return this;
    }

    @Override
    public CommonConfig register(final Class org.testifyproject.testifyprojectponentClass) {
        checkComponentClassNotNull(org.testifyproject.testifyprojectponentClass);
        if (org.testifyproject.testifyprojectponentBag.register(org.testifyproject.testifyprojectponentClass, getModelEnhancer(org.testifyproject.testifyprojectponentClass))) {
            processFeatureRegistration(null, org.testifyproject.testifyprojectponentClass);
        }

        return this;
    }

    @Override
    public CommonConfig register(final Class org.testifyproject.testifyprojectponentClass, final int bindingPriority) {
        checkComponentClassNotNull(org.testifyproject.testifyprojectponentClass);
        if (org.testifyproject.testifyprojectponentBag.register(org.testifyproject.testifyprojectponentClass, bindingPriority, getModelEnhancer(org.testifyproject.testifyprojectponentClass))) {
            processFeatureRegistration(null, org.testifyproject.testifyprojectponentClass);
        }

        return this;
    }

    @Override
    public CommonConfig register(final Class org.testifyproject.testifyprojectponentClass, final Class... contracts) {
        checkComponentClassNotNull(org.testifyproject.testifyprojectponentClass);
        if (contracts == null || contracts.length == 0) {
            LOGGER.warning(LocalizationMessages.COMPONENT_CONTRACTS_EMPTY_OR_NULL(org.testifyproject.testifyprojectponentClass));
            return this;
        }
        if (org.testifyproject.testifyprojectponentBag.register(org.testifyproject.testifyprojectponentClass, asNewIdentitySet(contracts), getModelEnhancer(org.testifyproject.testifyprojectponentClass))) {
            processFeatureRegistration(null, org.testifyproject.testifyprojectponentClass);
        }

        return this;
    }

    @Override
    public CommonConfig register(final Class org.testifyproject.testifyprojectponentClass, final Map, Integer> contracts) {
        checkComponentClassNotNull(org.testifyproject.testifyprojectponentClass);
        if (org.testifyproject.testifyprojectponentBag.register(org.testifyproject.testifyprojectponentClass, contracts, getModelEnhancer(org.testifyproject.testifyprojectponentClass))) {
            processFeatureRegistration(null, org.testifyproject.testifyprojectponentClass);
        }

        return this;
    }

    @Override
    public CommonConfig register(final Object org.testifyproject.testifyprojectponent) {
        checkProviderNotNull(org.testifyproject.testifyprojectponent);

        final Class org.testifyproject.testifyprojectponentClass = org.testifyproject.testifyprojectponent.getClass();
        if (org.testifyproject.testifyprojectponentBag.register(org.testifyproject.testifyprojectponent, getModelEnhancer(org.testifyproject.testifyprojectponentClass))) {
            processFeatureRegistration(org.testifyproject.testifyprojectponent, org.testifyproject.testifyprojectponentClass);
        }

        return this;
    }

    @Override
    public CommonConfig register(final Object org.testifyproject.testifyprojectponent, final int bindingPriority) {
        checkProviderNotNull(org.testifyproject.testifyprojectponent);
        final Class org.testifyproject.testifyprojectponentClass = org.testifyproject.testifyprojectponent.getClass();
        if (org.testifyproject.testifyprojectponentBag.register(org.testifyproject.testifyprojectponent, bindingPriority, getModelEnhancer(org.testifyproject.testifyprojectponentClass))) {
            processFeatureRegistration(org.testifyproject.testifyprojectponent, org.testifyproject.testifyprojectponentClass);
        }

        return this;
    }

    @Override
    public CommonConfig register(final Object org.testifyproject.testifyprojectponent, final Class... contracts) {
        checkProviderNotNull(org.testifyproject.testifyprojectponent);
        final Class org.testifyproject.testifyprojectponentClass = org.testifyproject.testifyprojectponent.getClass();
        if (contracts == null || contracts.length == 0) {
            LOGGER.warning(LocalizationMessages.COMPONENT_CONTRACTS_EMPTY_OR_NULL(org.testifyproject.testifyprojectponentClass));
            return this;
        }
        if (org.testifyproject.testifyprojectponentBag.register(org.testifyproject.testifyprojectponent, asNewIdentitySet(contracts), getModelEnhancer(org.testifyproject.testifyprojectponentClass))) {
            processFeatureRegistration(org.testifyproject.testifyprojectponent, org.testifyproject.testifyprojectponentClass);
        }

        return this;
    }

    @Override
    public CommonConfig register(final Object org.testifyproject.testifyprojectponent, final Map, Integer> contracts) {
        checkProviderNotNull(org.testifyproject.testifyprojectponent);
        final Class org.testifyproject.testifyprojectponentClass = org.testifyproject.testifyprojectponent.getClass();
        if (org.testifyproject.testifyprojectponentBag.register(org.testifyproject.testifyprojectponent, contracts, getModelEnhancer(org.testifyproject.testifyprojectponentClass))) {
            processFeatureRegistration(org.testifyproject.testifyprojectponent, org.testifyproject.testifyprojectponentClass);
        }

        return this;
    }

    private void processFeatureRegistration(final Object org.testifyproject.testifyprojectponent, final Class org.testifyproject.testifyprojectponentClass) {
        final ContractProvider model = org.testifyproject.testifyprojectponentBag.getModel(org.testifyproject.testifyprojectponentClass);
        if (model.getContracts().contains(Feature.class)) {
            @SuppressWarnings("unchecked")
            final FeatureRegistration registration = (org.testifyproject.testifyprojectponent != null)
                    ? new FeatureRegistration((Feature) org.testifyproject.testifyprojectponent)
                    : new FeatureRegistration((Class) org.testifyproject.testifyprojectponentClass);
            newFeatureRegistrations.add(registration);
        }
    }

    /**
     * Load the internal configuration state from an externally provided configuration state.
     * 
    
     * Calling this method effectively replaces existing configuration state of the instance with the state represented by the
     * externally provided configuration. If the features, auto-discoverables of given config has been already configured then
     * this method will make sure to not configure them for the second time.
     *
     * @param config external configuration state to replace the configuration of this configurable instance.
     * @return the updated org.testifyproject.testifyprojectmon configuration instance.
     */
    public CommonConfig loadFrom(final Configuration config) {
        if (config instanceof CommonConfig) {
            // If loading from CommonConfig then simply copy properties and check whether given config has been initialized.
            final CommonConfig org.testifyproject.testifyprojectmonConfig = (CommonConfig) config;

            copy(org.testifyproject.testifyprojectmonConfig, true);
            this.disableMetaProviderConfiguration = !org.testifyproject.testifyprojectmonConfig.enabledFeatureClasses.isEmpty();
        } else {
            setProperties(config.getProperties());

            this.enabledFeatures.clear();
            this.enabledFeatureClasses.clear();

            org.testifyproject.testifyprojectponentBag.clear();
            resetRegistrations();

            for (final Class clazz : config.getClasses()) {
                if (Feature.class.isAssignableFrom(clazz) && config.isEnabled((Class) clazz)) {
                    this.disableMetaProviderConfiguration = true;
                }

                register(clazz, config.getContracts(clazz));
            }

            for (final Object instance : config.getInstances()) {
                if (instance instanceof Feature && config.isEnabled((Feature) instance)) {
                    this.disableMetaProviderConfiguration = true;
                }

                register(instance, config.getContracts(instance.getClass()));
            }
        }

        return this;
    }

    private Set> asNewIdentitySet(final Class... contracts) {
        final Set> result = Collections.newSetFromMap(new IdentityHashMap<>());
        result.addAll(Arrays.asList(contracts));
        return result;
    }

    private void checkProviderNotNull(final Object provider) {
        if (provider == null) {
            throw new IllegalArgumentException(LocalizationMessages.COMPONENT_CANNOT_BE_NULL());
        }
    }

    private void checkComponentClassNotNull(final Class org.testifyproject.testifyprojectponentClass) {
        if (org.testifyproject.testifyprojectponentClass == null) {
            throw new IllegalArgumentException(LocalizationMessages.COMPONENT_CLASS_CANNOT_BE_NULL());
        }
    }

    /**
     * Configure {@link AutoDiscoverable auto-discoverables} in the injection manager.
     *
     * @param injectionManager  injection manager in which the auto-discoverables should be configured.
     * @param autoDiscoverables list of registered auto discoverable org.testifyproject.testifyprojectponents.
     * @param forcedOnly        defines whether all or only forced auto-discoverables should be configured.
     */
    public void configureAutoDiscoverableProviders(final InjectionManager injectionManager,
            final Collection autoDiscoverables, final boolean forcedOnly) {
        // Check whether meta providers have been initialized for a config this config has been loaded from.
        if (!disableMetaProviderConfiguration) {
            final Set providers = new TreeSet<>((o1, o2) -> {
                final int p1 = o1.getClass().isAnnotationPresent(Priority.class)
                        ? o1.getClass().getAnnotation(Priority.class).value() : Priorities.USER;
                final int p2 = o2.getClass().isAnnotationPresent(Priority.class)
                        ? o2.getClass().getAnnotation(Priority.class).value() : Priorities.USER;

                return (p1 < p2 || p1 == p2) ? -1 : 1;
            });

            // Forced (always invoked).
            final List forcedAutoDiscroverables = new LinkedList<>();
            for (Class forcedADType : ServiceFinder.find(ForcedAutoDiscoverable.class, true)
                    .toClassArray()) {
                forcedAutoDiscroverables.add(injectionManager.createAndInitialize(forcedADType));
            }
            providers.addAll(forcedAutoDiscroverables);

            // Regular.
            if (!forcedOnly) {
                providers.addAll(autoDiscoverables);
            }

            for (final AutoDiscoverable autoDiscoverable : providers) {
                final ConstrainedTo constrainedTo = autoDiscoverable.getClass().getAnnotation(ConstrainedTo.class);

                if (constrainedTo == null || type.equals(constrainedTo.value())) {
                    try {
                        autoDiscoverable.configure(this);
                    } catch (final Exception e) {
                        LOGGER.log(Level.FINE,
                                   LocalizationMessages.AUTODISCOVERABLE_CONFIGURATION_FAILED(autoDiscoverable.getClass()), e);
                    }
                }
            }
        }
    }

    /**
     * Configure binders in the injection manager and enable JAX-RS features.
     *
     * @param injectionManager injection manager in which the binders and features should be configured.
     */
    public void configureMetaProviders(InjectionManager injectionManager, ManagedObjectsFinalizer finalizer) {
        // First, configure existing binders
        Set configuredBinders = configureBinders(injectionManager, Collections.emptySet());

        // Check whether meta providers have been initialized for a config this config has been loaded from.
        if (!disableMetaProviderConfiguration) {
            // Register external meta objects
            configureExternalObjects(injectionManager);
            // Next, configure all features
            configureFeatures(injectionManager, new HashSet<>(), resetRegistrations(), finalizer);
            // At last, configure any new binders added by features
            configureBinders(injectionManager, configuredBinders);
        }
    }

    private Set configureBinders(InjectionManager injectionManager, Set configured) {
        Set allConfigured = Collections.newSetFromMap(new IdentityHashMap<>());
        allConfigured.addAll(configured);

        Collection binders = getBinder(configured);
        if (!binders.isEmpty()) {
            injectionManager.register(CompositeBinder.wrap(binders));
            allConfigured.addAll(binders);
        }

        return allConfigured;
    }

    private Collection getBinder(Set configured) {
        return org.testifyproject.testifyprojectponentBag.getInstances(ComponentBag.BINDERS_ONLY)
                .stream()
                .map(CAST_TO_BINDER)
                .filter(binder -> !configured.contains(binder))
                .collect(Collectors.toList());
    }

    private void configureExternalObjects(InjectionManager injectionManager) {
          org.testifyproject.testifyprojectponentBag.getInstances(model -> ComponentBag.EXTERNAL_ONLY.test(model, injectionManager))
                  .forEach(injectionManager::register);
          org.testifyproject.testifyprojectponentBag.getClasses(model -> ComponentBag.EXTERNAL_ONLY.test(model, injectionManager))
                  .forEach(injectionManager::register);
    }

    private void configureFeatures(InjectionManager injectionManager,
                                   Set processed,
                                   List unprocessed,
                                   ManagedObjectsFinalizer managedObjectsFinalizer) {
        FeatureContextWrapper featureContextWrapper = null;
        for (final FeatureRegistration registration : unprocessed) {
            if (processed.contains(registration)) {
                LOGGER.config(LocalizationMessages.FEATURE_HAS_ALREADY_BEEN_PROCESSED(registration.getFeatureClass()));
                continue;
            }

            Feature feature = registration.getFeature();
            if (feature == null) {
                feature = injectionManager.createAndInitialize(registration.getFeatureClass());
                managedObjectsFinalizer.registerForPreDestroyCall(feature);
            } else {
                // Disable injection of Feature instances on the client-side. Instances may be registered into multiple
                // web-targets which means that injecting anything into these instances is not safe.
                if (!RuntimeType.CLIENT.equals(type)) {
                    injectionManager.inject(feature);
                }
            }

            if (enabledFeatures.contains(feature)) {
                LOGGER.config(LocalizationMessages.FEATURE_HAS_ALREADY_BEEN_PROCESSED(feature));
                continue;
            }

            if (featureContextWrapper == null) {
                // init lazily
                featureContextWrapper = new FeatureContextWrapper(this, injectionManager);
            }
            final boolean success = feature.configure(featureContextWrapper);

            if (success) {
                processed.add(registration);
                configureFeatures(injectionManager, processed, resetRegistrations(), managedObjectsFinalizer);
                enabledFeatureClasses.add(registration.getFeatureClass());
                enabledFeatures.add(feature);
            }
        }
    }

    private List resetRegistrations() {
        final List result = new ArrayList<>(newFeatureRegistrations);
        newFeatureRegistrations.clear();
        return result;
    }

    @Override
    public boolean equals(final Object o) {
        if (this == o) {
            return true;
        }
        if (!(o instanceof CommonConfig)) {
            return false;
        }

        final CommonConfig that = (CommonConfig) o;

        if (type != that.type) {
            return false;
        }
        if (!properties.equals(that.properties)) {
            return false;
        }
        if (!org.testifyproject.testifyprojectponentBag.equals(that.org.testifyproject.testifyprojectponentBag)) {
            return false;
        }
        if (!enabledFeatureClasses.equals(that.enabledFeatureClasses)) {
            return false;
        }
        if (!enabledFeatures.equals(that.enabledFeatures)) {
            return false;
        }
        if (!newFeatureRegistrations.equals(that.newFeatureRegistrations)) {
            return false;
        }

        return true;
    }

    @Override
    public int hashCode() {
        int result = type.hashCode();
        result = 31 * result + properties.hashCode();
        result = 31 * result + org.testifyproject.testifyprojectponentBag.hashCode();
        result = 31 * result + newFeatureRegistrations.hashCode();
        result = 31 * result + enabledFeatures.hashCode();
        result = 31 * result + enabledFeatureClasses.hashCode();
        return result;
    }
}
    
    
    
    

    




    
    
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