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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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/*
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 * and Distribution License("CDDL") (collectively, the "License").  You
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 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
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package org.glassfish.jersey.server.spi.internal;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.Iterator;
import java.util.List;

import javax.ws.rs.NotSupportedException;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.WebApplicationException;

import org.glassfish.jersey.internal.inject.Providers;
import org.glassfish.jersey.message.internal.MessageBodyProviderNotFoundException;
import org.glassfish.jersey.server.internal.process.MappableException;
import org.glassfish.jersey.server.model.Parameter;
import org.glassfish.jersey.server.model.Parameterized;

import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.api.ServiceLocator;

/**
 * Utility methods for retrieving values or value providers for the
 * {@link Parameterized parameterized} resource model components.
 *
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
public final class ParameterValueHelper {

    /**
     * Get the array of parameter values.
     *
     * @param valueProviders a list of value providers.
     * @return array of parameter values provided by the value providers.
     */
    public static Object[] getParameterValues(List> valueProviders) {
        final Object[] params = new Object[valueProviders.size()];
        try {
            int index = 0;
            for (Factory valueProvider : valueProviders) {
                params[index++] = valueProvider.provide();
            }
            return params;
        } catch (WebApplicationException e) {
            throw e;
        } catch (MessageBodyProviderNotFoundException e) {
            throw new NotSupportedException(e);
        } catch (ProcessingException e) {
            throw e;
        } catch (RuntimeException e) {
            throw new MappableException("Exception obtaining parameters", e);
        }
    }

    /**
     * Create list of parameter value providers for the given {@link Parameterized
     * parameterized} resource model component.
     *
     * @param locator       HK2 service locator.
     * @param parameterized parameterized resource model component.
     * @return list of parameter value providers for the parameterized component.
     */
    public static List> createValueProviders(final ServiceLocator locator, final Parameterized parameterized) {
        if ((null == parameterized.getParameters()) || (0 == parameterized.getParameters().size())) {
            return Collections.emptyList();
        }

        List valueFactoryProviders = new ArrayList(
                Providers.getProviders(locator, ValueFactoryProvider.class));

        Collections.sort(valueFactoryProviders, new Comparator() {

            @Override
            public int compare(ValueFactoryProvider o1, ValueFactoryProvider o2) {
                return o2.getPriority().getWeight() - o1.getPriority().getWeight();
            }

        });

        boolean entityParamFound = false;
        final List> providers = new ArrayList>(parameterized.getParameters().size());
        for (final Parameter parameter : parameterized.getParameters()) {
            entityParamFound = entityParamFound || Parameter.Source.ENTITY == parameter.getSource();
            providers.add(getValueFactory(valueFactoryProviders, parameter));
        }

        if (!entityParamFound && Collections.frequency(providers, null) == 1) {
            // Try to find entity if there is one unresolved parameter and the annotations are unknown
            final int entityParamIndex = providers.lastIndexOf(null);
            final Parameter parameter = parameterized.getParameters().get(entityParamIndex);
            if (Parameter.Source.UNKNOWN == parameter.getSource() && !parameter.isQualified()) {
                providers.set(entityParamIndex, getValueFactory(
                        valueFactoryProviders,
                        Parameter.overrideSource(parameter, Parameter.Source.ENTITY)));
            }
        }

        return providers;
    }

    private static Factory getValueFactory(Collection valueFactoryProviders, final Parameter parameter) {
        Factory valueFactory = null;
        final Iterator vfpIterator = valueFactoryProviders.iterator();
        while (valueFactory == null && vfpIterator.hasNext()) {
            valueFactory = vfpIterator.next().getValueFactory(parameter);
        }
        return valueFactory;
    }

    /**
     * Prevents instantiation.
     */
    private ParameterValueHelper() {
    }
}




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