diff --git a/pisi/specfilenew.py b/pisi/specfilenew.py
index 32e68b7a..6de03fc7 100644
--- a/pisi/specfilenew.py
+++ b/pisi/specfilenew.py
@@ -196,46 +196,11 @@ class SpecFile(XmlFile):
         #ignore tag
         #XmlFile.__init__(self, tag)
 
-    def read(self, filename):
+    def read_hook(self, errs):
         """Read PSPEC file"""
-        
-        self.readxml(filename)
-        
-        errs = []
-        self.decode(self.rootNode(), errs)
-        if errs:
-            raise Error(*errs)
-
         self.merge_tags()
         self.override_tags()
 
-        self.unlink()
-
-        errs = self.check()
-        if errs:
-            errs.append(_("File '%s' has errors") % filename)
-            raise Error(*errs)
-
-    def override_tags(self):
-        """Override tags from Source in Packages. Some tags in Packages
-        overrides the tags from Source. There is a more detailed
-        description in documents."""
-
-        tmp = []
-        for pkg in self.packages:
-            if not pkg.summary:
-                pkg.summary = self.source.summary
-            if not pkg.description:
-                pkg.description = self.source.description
-            if not pkg.partOf:
-                pkg.partOf = self.source.partOf
-            if not pkg.license:
-                pkg.license = self.source.license
-            if not pkg.icon:
-                pkg.icon = self.source.icon
-            tmp.append(pkg)
-        self.packages = tmp
-
     def merge_tags(self):
         """Merge tags from Source in Packages. Some tags in Packages merged
         with the tags from Source. There is a more detailed
@@ -260,11 +225,22 @@ class SpecFile(XmlFile):
             tmp.append(pkg)
         self.packages = tmp
 
-    def write(self, filename):
-        """Write PSPEC file"""
-        errs = []
-        self.newDOM()
-        self.encode(self, self.rootNode(), errs)
-        if errs:
-            raise Error(*errs)
-        self.writexml(filename)
+    def override_tags(self):
+        """Override tags from Source in Packages. Some tags in Packages
+        overrides the tags from Source. There is a more detailed
+        description in documents."""
+
+        tmp = []
+        for pkg in self.packages:
+            if not pkg.summary:
+                pkg.summary = self.source.summary
+            if not pkg.description:
+                pkg.description = self.source.description
+            if not pkg.partOf:
+                pkg.partOf = self.source.partOf
+            if not pkg.license:
+                pkg.license = self.source.license
+            if not pkg.icon:
+                pkg.icon = self.source.icon
+            tmp.append(pkg)
+        self.packages = tmp
diff --git a/pisi/xmlfile.py b/pisi/xmlfile.py
index cc3a0cc2..0d277ff8 100644
--- a/pisi/xmlfile.py
+++ b/pisi/xmlfile.py
@@ -221,6 +221,8 @@ class autoxml(oo.autosuper):
         # standard initialization
         super(autoxml, cls).__init__(name, bases, dict)
 
+        xmlfile_support = XmlFile in bases
+
         #TODO: initialize class attribute __xml_tags
         #setattr(cls, 'xml_variables', [])
 
@@ -306,6 +308,38 @@ class autoxml(oo.autosuper):
         cls.print_text = print_text
         if not dict.has_key('__str__'):
             cls.__str__ = print_text
+            
+        if xmlfile_support:
+            def read(self, filename):
+                self.readxml(filename)
+                errs = []
+                self.decode(self.rootNode(), errs)
+                if hasattr(self, 'read_hook'):
+                    self.read_hook(errs)
+                if errs:
+                    errs.append(_("autoxml.read: File '%s' has errors") % filename)
+                    raise Error(*errs)
+
+                self.unlink()
+
+                errs = self.check()
+                if errs:
+                    errs.append(_("autoxml.read: File '%s' has errors") % filename)
+                    raise Error(*errs)
+                    
+            def write(self, filename):
+                errs = []
+                self.newDOM()
+                self.encode(self, self.rootNode(), errs)
+                if hasattr(self, 'write_hook'):
+                    self.write_hook(errs)
+                if errs:
+                    errs.append(_("autoxml.write: File '%s' has errors") % filename)
+                    raise Error(*errs)
+                self.writexml(filename)
+            
+            cls.read = read
+            cls.write = write
 
     def gen_attr_member(cls, attr):
         """generate readers and writers for an attribute member"""