uk.co.q3c.v7.base.guice.BaseServlet.java Source code

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Here is the source code for uk.co.q3c.v7.base.guice.BaseServlet.java

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/*
 * Copyright (C) 2013 David Sowerby
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */
package uk.co.q3c.v7.base.guice;

import javax.inject.Inject;
import javax.inject.Singleton;

import com.vaadin.server.ServiceException;
import com.vaadin.server.SessionInitEvent;
import com.vaadin.server.SessionInitListener;
import com.vaadin.server.UIProvider;
import com.vaadin.server.VaadinServlet;

@Singleton
public class BaseServlet extends VaadinServlet implements SessionInitListener {

    /**
     * Cannot use constructor injection. Container expects servlet to have no-arg public constructor
     */
    @Inject
    private UIProvider basicProvider;

    @Override
    protected void servletInitialized() {
        getService().addSessionInitListener(this);
    }

    @Override
    public void sessionInit(SessionInitEvent event) throws ServiceException {
        event.getSession().addUIProvider(basicProvider);
    }

}