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package org.glassfish.jersey.server.model.internal;
import java.lang.reflect.InvocationHandler;
import java.util.Collection;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.inject.Singleton;
import org.glassfish.jersey.server.internal.LocalizationMessages;
import org.glassfish.jersey.server.internal.inject.ConfiguredValidator;
import org.glassfish.jersey.server.model.Invocable;
import org.glassfish.jersey.server.spi.internal.ResourceMethodDispatcher;
/**
* A resource method dispatcher provider factory.
*
* This class is used by {@link org.glassfish.jersey.server.model.ResourceMethodInvoker} to
* create a {@link org.glassfish.jersey.server.spi.internal.ResourceMethodDispatcher.Provider} instance
* that will be used to provide a {@link org.glassfish.jersey.server.spi.internal.ResourceMethodDispatcher}
* instances for all resource method invocations.
*
*
* JAX-RS resource methods are invoked by {@link org.glassfish.jersey.server.model.ResourceMethodInvoker
* resource method invoker}. Whenever a new incoming request has been routed to a resource method and the
* method is being invoked by the resource method invoker, the invoker consults a registered
* {@link org.glassfish.jersey.server.spi.internal.ResourceMethodDispatcher.Provider} instance to retrieve
* a {@link org.glassfish.jersey.server.spi.internal.ResourceMethodDispatcher} that will be ultimately used
* to dispatch the resource method invocation. This mechanism is useful for implementing any resource method
* interception logic.
*
*
* @author Paul Sandoz
* @author Marek Potociar (marek.potociar at oracle.com)
*/
@Singleton
public final class ResourceMethodDispatcherFactory implements ResourceMethodDispatcher.Provider {
private static final Logger LOGGER = Logger.getLogger(ResourceMethodDispatcherFactory.class.getName());
private final Collection providers;
ResourceMethodDispatcherFactory(Collection providers) {
this.providers = providers;
}
// ResourceMethodDispatchProvider
@Override
public ResourceMethodDispatcher create(Invocable resourceMethod, InvocationHandler handler, ConfiguredValidator validator) {
for (ResourceMethodDispatcher.Provider provider : providers) {
try {
ResourceMethodDispatcher dispatcher = provider.create(resourceMethod, handler, validator);
if (dispatcher != null) {
return dispatcher;
}
} catch (Exception e) {
LOGGER.log(Level.SEVERE,
LocalizationMessages.ERROR_PROCESSING_METHOD(resourceMethod, provider.getClass().getName()),
e);
}
}
return null;
}
}