Package com.noelios.restlet.component

Source Code of com.noelios.restlet.component.ServerRouter

/*
* Copyright 2005-2007 Noelios Consulting.
*
* The contents of this file are subject to the terms of the Common Development
* and Distribution License (the "License"). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the license at
* http://www.opensource.org/licenses/cddl1.txt See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each file and
* include the License file at http://www.opensource.org/licenses/cddl1.txt If
* applicable, add the following below this CDDL HEADER, with the fields
* enclosed by brackets "[]" replaced with your own identifying information:
* Portions Copyright [yyyy] [name of copyright owner]
*/

package com.noelios.restlet.component;

import org.restlet.Component;
import org.restlet.Restlet;
import org.restlet.Route;
import org.restlet.Router;
import org.restlet.VirtualHost;
import org.restlet.data.Request;
import org.restlet.data.Response;
import org.restlet.data.Status;

/**
* Router that collects calls from all server connectors and dispatches them to
* the appropriate host routers for dispatching to the user applications.
*
* @author Jerome Louvel (contact@noelios.com)
*/
public class ServerRouter extends Router {
    /** The parent component. */
    private Component component;

    /**
     * Constructor.
     *
     * @param component
     *            The parent component.
     */
    public ServerRouter(Component component) {
        super(component.getContext());
        this.component = component;
        setRoutingMode(FIRST);
    }

    /** Starts the Restlet. */
    public void start() throws Exception {
        // Attach all virtual hosts
        for (VirtualHost host : getComponent().getHosts()) {
            getRoutes().add(new HostRoute(this, host));
        }

        // Also attach the default host if it exists
        if (getComponent().getDefaultHost() != null) {
            getRoutes().add(
                    new HostRoute(this, getComponent().getDefaultHost()));
        }

        // If no host matches, display and error page with a precise message
        Restlet noHostMatched = new Restlet(getComponent().getContext()) {
            public void handle(Request request, Response response) {
                response.setStatus(Status.CLIENT_ERROR_NOT_FOUND,
                        "No virtual host could handle the request");
            }
        };
        setDefaultRoute(new Route(this, "", noHostMatched));

        // Start the router
        super.start();
    }

    /**
     * Returns the parent component.
     *
     * @return The parent component.
     */
    private Component getComponent() {
        return this.component;
    }
}
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