org.lunifera.runtime.web.vaadin.osgi.servlet.VaadinOSGiServlet.java Source code

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Here is the source code for org.lunifera.runtime.web.vaadin.osgi.servlet.VaadinOSGiServlet.java

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/**
 * Copyright (c) 2011 - 2014, Lunifera GmbH (Gross Enzersdorf), Loetz KG (Heidelberg)
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors: 
 *       Florian Pirchner - Initial implementation
 */
package org.lunifera.runtime.web.vaadin.osgi.servlet;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;

import org.lunifera.runtime.web.vaadin.osgi.common.IVaadinApplication;

import com.vaadin.server.DeploymentConfiguration;
import com.vaadin.server.ServiceException;
import com.vaadin.server.UIProvider;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.server.VaadinSession;

/**
 * Used to create instances of applications that have been registered with the
 * container via a component factory.
 * 
 */
public class VaadinOSGiServlet extends VaadinServlet {

    private static final long serialVersionUID = 1L;

    private IVaadinApplication webApplication;

    /**
     * Default constructor.
     * 
     * @param webApplication
     *            The vaadin web application.
     */
    public VaadinOSGiServlet(IVaadinApplication webApplication) {
        this.webApplication = webApplication;
    }

    @Override
    public void init(ServletConfig servletConfig) throws ServletException {
        try {
            super.init(servletConfig);
        } catch (ServletException e) {
            if (e.getMessage().equals("Application not specified in servlet parameters")) {
                // Ignore if application is not specified to allow the same
                // servlet to be used for only push in portals
            } else {
                throw e;
            }
        }

    }

    @Override
    protected OSGiServletService createServletService(DeploymentConfiguration deploymentConfiguration)
            throws ServiceException {

        // create the servlet service initialized with the ui provider
        OSGiServletService service = new OSGiServletService(this, deploymentConfiguration,
                new OSGiServletService.IVaadinSessionFactory() {
                    @Override
                    public VaadinSession createSession(VaadinRequest request,
                            HttpServletRequest httpServletRequest) {
                        VaadinSession session = new VaadinSession(request.getService());
                        for (UIProvider provider : webApplication.getUiProviders()) {
                            session.addUIProvider(provider);
                        }
                        return session;
                    }
                });
        service.init();
        return service;
    }

    @Override
    public void destroy() {
        super.destroy();
    }

}