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package javax.servlet;

import java.io.IOException;

    /**
    * A FilterChain is an object provided by the servlet container to the developer
    * giving a view into the invocation chain of a filtered request for a resource. Filters
    * use the FilterChain to invoke the next filter in the chain, or if the calling filter
    * is the last filter in the chain, to invoke the resource at the end of the chain.
    *
    * @see Filter
    * @since Servlet 2.3
    **/

public interface FilterChain {
  
  /**
  * Causes the next filter in the chain to be invoked, or if the calling filter is the last filter
  * in the chain, causes the resource at the end of the chain to be invoked.
  *
  * @param request the request to pass along the chain.
  * @param response the response to pass along the chain.
  *
  * @since 2.3
  */
  
    public void doFilter ( ServletRequest request, ServletResponse response ) throws IOException, ServletException;

}

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