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package org.atmosphere.cpr;

import org.atmosphere.handler.ReflectorServletProcessor;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;

/**
 * Simple Servlet to use when Atmosphere {@link Meteor} are used. This Servlet will look
 * for a Servlet init-param named org.atmosphere.servlet or org.atmosphere.filter and will
 * delegate request processing to them. When used, this Servlet will ignore any
 * value defined in META-INF/atmosphere.xml as internally it will create a
 * {@link ReflectorServletProcessor}
 * 
 * @author Jean-Francois Arcand
 */
public class MeteorServlet extends AtmosphereServlet {

    /**
     * Initialize a confugured instance of {@link ReflectorServletProcessor} and
     * follow the normal AtmosphereServlet processing.
     * @param sc the {@link ServletContext}
     */
    @Override
    protected void loadConfiguration(ServletConfig sc) throws ServletException {
        String servletClass = sc.getInitParameter("org.atmosphere.servlet");
        String mapping = sc.getInitParameter("org.atmosphere.mapping");
        String filterClass = sc.getInitParameter("org.atmosphere.filter");

        ReflectorServletProcessor r = new ReflectorServletProcessor();
        r.setServletClassName(servletClass);
        r.setFilterClassName(filterClass);

        if (mapping == null) {
            mapping = "/*";
        }
        addAtmosphereHandler(mapping, r);
    }
}