WebletsContextFilter.java

package net.java.dev.weblets;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import java.io.IOException;

/**
 * a simple servlet filter to enable webapp context processing from non jsf and non jee5 systems
 * 
 */
public class WebletsContextFilter implements Filter {
	WebletContainer	wblContainer	= null;
	boolean			isSetup			= false;

	public void init(FilterConfig filterConfig) throws ServletException {
		wblContainer = WebletContainer.getInstance();
	}

	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
		if (!isSetup) {
			synchronized (wblContainer) {
				isSetup = true;
				if (wblContainer.getWebletContextPath() == null || wblContainer.getWebletContextPath().trim().equals("")) {
					wblContainer.setWebletContextPath(((HttpServletRequest) servletRequest).getContextPath());
				}
			}
		}
		filterChain.doFilter(servletRequest, servletResponse);
	}

	public void destroy() {
	}
}