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package com.sun.jersey.spi.container;

import com.sun.jersey.impl.ImplMessages;
import com.sun.jersey.api.model.AbstractResourceMethod;
import com.sun.jersey.core.spi.component.ProviderServices;
import com.sun.jersey.server.impl.application.ResourceMethodDispatcherFactory;
import com.sun.jersey.spi.dispatch.RequestDispatcher;
import com.sun.jersey.spi.inject.Errors;
import java.util.Set;
import java.util.logging.Level;
import java.util.logging.Logger;

/**
 *
 * @author [email protected]
 */
public class ResourceMethodCustomInvokerDispatchFactory {

    private static final Logger LOGGER = Logger.getLogger(ResourceMethodDispatcherFactory.class.getName());

    final Set customInvokerDispatchProviders;

    public ResourceMethodCustomInvokerDispatchFactory(ProviderServices providerServices) {
        customInvokerDispatchProviders = providerServices.getProvidersAndServices(ResourceMethodCustomInvokerDispatchProvider.class);
    }

    // this is to address EJB integration issues in WLS/GF:
    public RequestDispatcher getDispatcher(AbstractResourceMethod abstractResourceMethod, JavaMethodInvoker invoker) {

        if (invoker == null) {
            return null;
        }
        // Mark the errors so it is possible to reset
        Errors.mark();

        for (ResourceMethodCustomInvokerDispatchProvider rmdp : customInvokerDispatchProviders) {

            try {
                RequestDispatcher d = rmdp.create(abstractResourceMethod, invoker);
                if (d != null) {
                    // Reset any errors, if any, produced from previous dispatch
                    // providers
                    Errors.reset();
                    return d;
                }
            } catch (Exception e) {
                LOGGER.log(Level.SEVERE, ImplMessages.ERROR_PROCESSING_METHOD(
                        abstractResourceMethod.getMethod(),
                        rmdp.getClass().getName()), e);
            }
        }

        Errors.unmark();
        return null;
    }
}