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--- a/OSSEval/entity/models.py
+++ b/OSSEval/entity/models.py
@@ -7,18 +7,14 @@
     actual_entity_app = models.CharField(max_length=200) #the app where the above classes are
     def from_xml(self, xmldoc, insert = True):
         if not insert:
-            self.id = xmldoc.getElementsByTagName('Id')[0].firstChild.data
-        self.name = xmlMinidom.getString(xmldoc, 'Name')
-        self.actual_entity_class = xmlMinidom.getString(xmldoc, 'ActualEntityClass')
-        self.actual_entity_app = xmlMinidom.getString(xmldoc, 'ActualEntityApp')
+            self.id = xmlMinidom.getNaturalAttribute(xmldoc, 'Id')
+        self.name = xmlMinidom.getStringAttribute(xmldoc, 'Name')
+        self.actual_entity_class = xmlMinidom.getStringAttribute(xmldoc, 'ActualEntityClass')
+        self.actual_entity_app = xmlMinidom.getStringAttribute(xmldoc, 'ActualEntityApp')
         # I save so I get the ID (if insert == True)
         self.save()
     def to_xml(self):
-        str_xml = "<Id>" + str(self.id) + "</Id>"
-        str_xml += "<Name>" + self.name + "</Name>"
-        str_xml += "<ActualEntityClass>" + self.actual_entity_class + "</ActualEntityClass>"
-        str_xml += "<ActualEntityApp>" + self.actual_entity_app + "</ActualEntityApp>"
-        return "<Entity>" + str_xml + "</Entity>"
+        return '<Entity Id="' + str(self.id) + '" Name="' + self.name + '" ActualEntityClass="' + self.actual_entity_class + '" ActualEntityApp="' + self.actual_entity_app + '"/>'
     
     def __unicode__(self):
         return self.name