[validation] Shorten ValidationError repr string

Author: mpsonntag

odml/validation.py

@@ -9,6 +9,11 @@
 
 from . import dtypes
 
+try:
+    unicode = unicode
+except NameError:
+    unicode = str
+
 LABEL_ERROR = 'error'
 LABEL_WARNING = 'warning'
 
@@ -83,9 +88,15 @@ def path(self):
         return self.obj.get_path()
 
     def __repr__(self):
-        return "<ValidationError(%s):%s '%s'>" % (self.rank,
-                                                  self.obj,
-                                                  self.msg)
+        # Cleanup the odml object print strings
+        print_str = unicode(self.obj).split()[0].split("[")[0].split(":")[0]
+        # Document has no name attribute and should not print id or name info
+        if hasattr(self.obj, "name"):
+            if self.obj.name and self.obj.name != self.obj.id:
+                print_str = "%s[%s]" % (print_str, self.obj.name)
+            else:
+                print_str = "%s[%s]" % (print_str, self.obj.id)
+        return "Validation%s: %s '%s'" % (self.rank.capitalize(), print_str, self.msg)
 
 
 class Validation(object):