FilterHandler


1   package org.roller.presentation.pagecache;
2   
3   import org.roller.pojos.UserData;
4   
5   import java.io.IOException  ;
6   
7   import javax.servlet.FilterChain  ;
8   import javax.servlet.ServletException  ;
9   import javax.servlet.ServletRequest  ;
10  import javax.servlet.ServletResponse  ;
11  import javax.servlet.http.HttpServletRequest  ;
12  
13  public interface FilterHandler
14  {
15      /**
16       * Clean up anything necessary before destruction.
17       */
18      public void destroy();
19  
20      /**
21       * Exactly as Filter.doFilter().
22       */
23      public void doFilter(ServletRequest   request,
24          ServletResponse   response, FilterChain   chain)
25          throws ServletException  , IOException  ;
26  
27      /**
28       * Clear the entire cache.
29       */
30      public void flushCache(HttpServletRequest   req);
31  
32      /**
33       * Remove the entries for this User
34       * from the cache.
35       */
36      public void removeFromCache(HttpServletRequest   req,UserData user);
37  }
38

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