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diff --git a/src/filter.hpp b/src/filter.hpp
index b71e85f..b135553 100644
--- a/src/filter.hpp
+++ b/src/filter.hpp
@@ -1,4 +1,4 @@
-/* $Id: filter.hpp,v 1.7 2005-10-29 22:23:36 marc Exp $
+/* $Id: filter.hpp,v 1.12 2006-01-09 13:43:59 adam Exp $
    Copyright (c) 2005, Index Data.
 
 %LICENSE%
@@ -7,6 +7,7 @@
 #ifndef FILTER_HPP
 #define FILTER_HPP
 
+#include <string>
 #include <stdexcept>
 #include <libxml/tree.h>
 
@@ -14,6 +15,7 @@ namespace yp2 {
 
     class Package;
 
+
     namespace filter {
         class Base {
         public:
@@ -22,23 +24,25 @@ namespace yp2 {
             ///sends Package off to next Filter, returns altered Package
             virtual void process(Package & package) const = 0;
 
-            virtual void configure(const xmlNode * ptr = 0) { };
-            
-            
-            virtual const std::string type() const = 0;
-        };
-    }
-    
-    class FilterException : public std::runtime_error {
-    public:
-        FilterException(const std::string message)
-            : std::runtime_error("FilterException: " + message){
+            virtual void configure(const xmlNode * ptr) { };
         };
-    };
 
-  
+        class FilterException : public std::runtime_error {
+        public:
+            FilterException(const std::string message)
+                : std::runtime_error("FilterException: " + message){
+            };
+        };
+        
+    }
 }
 
+struct yp2_filter_struct {
+    int ver;
+    const char *type;
+    yp2::filter::Base* (*creator)();
+};
+
 #endif
 /*
  * Local variables: