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package org.glassfish.jersey.server.internal.routing;
import java.util.Collections;
import java.util.List;
import org.glassfish.hk2.api.Factory;
import com.google.common.base.Function;
import com.google.common.collect.Lists;
/**
* Request routing information. Contains a {@link #routingPattern() routing pattern}
* and a {@link #next() list of next-level stages} to be processed in case the
* routing pattern successfully matches the un-matched right-hand part of the request.
*
* @param routing pattern type.
* @author Marek Potociar (marek.potociar at oracle.com)
*/
final class Route {
/**
* Transformation function that converts router provider into router.
*/
private static final Function, Router> PROVIDER_TO_ROUTER_TRANSFORMATION =
new Function, Router>() {
@Override
public Router apply(Factory f) {
return f.provide();
}
};
private final T routingPattern;
private final List> routerProviders;
/**
* Create a new request route.
*
* @param routing pattern type.
* @param routingPattern request path routing pattern.
* @param routerProviders next-level routers to be processed in case the routing
* pattern matches the unmatched right-hand part of the request path.
* @return new request route.
*/
static Route of(T routingPattern, List> routerProviders) {
return new Route(routingPattern, routerProviders);
}
private Route(T routingPattern, List> routerProviders) {
this.routingPattern = routingPattern;
this.routerProviders = routerProviders;
}
/**
* Get the request path routing pattern.
*
* @return request path routing pattern.
*/
public T routingPattern() {
return routingPattern;
}
/**
* Get next-level routers to be processed in case the routing pattern matches
* the unmatched right-hand part of the request path.
*
* @return routed next-level next.
*/
public List next() {
if (routerProviders.isEmpty()) {
return Collections.emptyList();
} else {
return Lists.transform(routerProviders, Route.PROVIDER_TO_ROUTER_TRANSFORMATION);
}
}
}