F h5 cfood

https://gitlab.com/caosdb/caosdb-advanced-user-tools/-/merge_requests/78

integrationtests/example_hdf5cfood.py

@@ -41,9 +41,13 @@ class ExampleH5CFood(H5CFood):
         return ExperimentCFood.get_re()[:-len(readme_pattern)] + r".*\.hdf5"
 
     def create_identifiables(self):
-        self.experiment, project = ExperimentCFood.create_identifiable_experiment(self.match)
-
         self.identifiable_root = db.Record()
         self.identifiable_root.add_property("hdf5File", self.crawled_file)
         self.identifiable_root.add_parent("ExampleH5")
         self.identifiables.append(self.identifiable_root)
+
+    def special_treatment(self, key, value, dtype):
+        if key == "attr_data_root":
+            return "single_attribute", value, dtype
+
+        return key, value, dtype