restrict invalid attribute access for RDF accessor

h5rdmtoolbox/wrapper/rdf.py

@@ -1,12 +1,10 @@
 """RDF (Resource Description Framework) module for use with HDF5 files"""
-import warnings
-
 import abc
-from typing import Dict, Union, Optional, List
-
 import h5py
 import pydantic
+import warnings
 from pydantic import HttpUrl
+from typing import Dict, Union, Optional, List
 
 from . import lazy
 from ..protocols import H5TbxAttributeManager
@@ -265,6 +263,14 @@ def __str__(self) -> str:
     def __repr__(self) -> str:
         return self.__str__()
 
+    def __setattr__(self, key, value):
+        if key not in ('_attr',
+                       'subject',
+                       'predicate',
+                       'type'):
+            raise KeyError(f"Cannot set {key}. Only subject, predicate and type can be set!")
+        super().__setattr__(key, value)
+
     @property
     def parent(self):
         """Return the parent object"""
@@ -532,4 +538,4 @@ def delete(self, name):
         if name in self.predicate:
             del self.predicate[name]
         if name in self.object:
-            del self.object[name]
+            del self.object[name]

tests/wrapper/test_rdf.py

@@ -30,6 +30,8 @@ def test_RDF(self):
             Attribute('0000-0001-8729-0482', rdf_predicate='000-0001-8729-0482')
 
         with h5tbx.File(mode='w') as h5:
+            with self.assertRaises(KeyError):
+                h5.rdf.type123 = 'https://example.org/validURI'
             with self.assertRaises(KeyError):
                 h5.rdf['not_existing'].predicate = 'https://example.org/notExisting'
             h5.attrs['orcid', M4I.orcidId] = rdfobj