Refactoring cxg utility classes in preparation for CXG conversion tooling (#1739)

server/data_cxg/cxg_adaptor.py

@@ -1,9 +1,9 @@
 import os
 import json
 import logging
-from server.common.utils import dtype_to_schema
+from server.common.utils.type_conversion_utils import get_schema_type_hint_from_dtype
 from server.common.errors import DatasetAccessError, ConfigurationError
-from server.common.utils import path_join
+from server.common.utils.utils import path_join
 from server.common.constants import Axis
 from server.data_common.data_adaptor import DataAdaptor
 from server.data_common.fbs.matrix import encode_matrix_fbs
@@ -389,7 +389,7 @@ class CxgAdaptor(DataAdaptor):
                     if schema["type"] == "categorical" and "categories" in type_hint:
                         schema["categories"] = type_hint["categories"]
                 else:
-                    schema.update(dtype_to_schema(attr.dtype))
+                    schema.update(get_schema_type_hint_from_dtype(attr.dtype))
                 cols.append(schema)
 
             annotations[ax] = dict(columns=cols)