/**
 * 
 */
package org.ec.app.main;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;

import org.apache.log4j.Logger;
import org.ec.app.config.AppConfig;
import org.ec.app.config.constants.IConfigConstants;
import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

/**
 * @author arpan
 *
 */
public class AppInitializer implements WebApplicationInitializer{

	private static final Logger log = Logger.getLogger(AppInitializer.class);
	
	@Override
	public void onStartup(ServletContext servletContext) throws ServletException {	
		
		log.info("onStartup() method invoked");
		WebApplicationContext webContext = getContext();
		servletContext.addListener(new ContextLoaderListener(webContext));
		ServletRegistration.Dynamic dispatcher = servletContext.addServlet("DispatcherServlet", new DispatcherServlet(webContext));
		dispatcher.setLoadOnStartup(IConfigConstants.LOAD_ON_STARTUP_VALUE);
		dispatcher.addMapping(IConfigConstants.MAPPING_URL);		
	}
	

	private AnnotationConfigWebApplicationContext getContext()
	{
		AnnotationConfigWebApplicationContext context = new AnnotationConfigWebApplicationContext();
		context.register(AppConfig.class);
		return context;
	}
}