filro para imprimir as IDs do component tree (Mojarra)

gistfile1.txt

package br.com.caelum.filter;

import java.io.IOException;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.Set;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

public class SessionAttributeLogger implements Filter {

	public void doFilter(ServletRequest request, ServletResponse response,
			FilterChain chain) throws IOException, ServletException {

		chain.doFilter(request, response);

		HttpSession session = ((HttpServletRequest) request).getSession();
		Enumeration<String> names = session.getAttributeNames();

		while (names.hasMoreElements()) {
			
			String name = names.nextElement();
			
			Object attribute = session.getAttribute(name);

			if (attribute instanceof HashMap) {
				System.out.println("------ IDS DA ARVORE -------");

				HashMap<String, Object> originalViews = (HashMap<String, Object>) attribute;
				HashMap<String, Object> views = new LinkedHashMap<String, Object>(originalViews);
				
				Set<String> keySet = views.keySet();
				int i = 0;
				for (String key : keySet) {
					System.out.printf("%d ID: %s %n", ++i , key);
				}
				
				
				System.out.println("------ FIM IDS -------");
			}
			System.out.println("OUTROS ATTRIBUTOS DA SESSAO: " + name);
		}
	}

	public void destroy() {
	}

	public void init(FilterConfig arg0) throws ServletException {
	}

}