Finish the annotation store: collections, declared dimensions and parquet

dascore/io/__init__.py

@@ -21,6 +21,7 @@
 from dascore.core.annotations import (
     annotation_set_to_csv,
     annotation_set_to_dataframe,
+    annotation_set_to_parquet,
     annotation_set_to_vertices,
     save_annotation_set,
 )
@@ -60,4 +61,5 @@ class AnnotationIO(AnnotationNameSpace):
     to_dataframe = annotation_set_to_dataframe
     to_vertices = annotation_set_to_vertices
     to_csv = annotation_set_to_csv
+    to_parquet = annotation_set_to_parquet
     save = save_annotation_set

dascore/utils/pd.py

@@ -393,7 +393,13 @@ def _filter_contains(query_dict, df, bool_index):
     """Filter based on rows containing specified values."""
     for key, val in query_dict.items():
         _check_misdirected_range_query(key, val, df)
-        bool_index = np.logical_and(bool_index, df[key].isin(val))
+        # An ellipsis names no value, so it matches nothing and is dropped
+        # before `isin` sees it: pandas' arrow-backed string columns refuse a
+        # value arrow has no type for, where its numpy-backed ones quietly
+        # never match. The range check above still sees it -- an open bound
+        # in a membership query is what that check exists to name.
+        wanted = [x for x in val if x is not ...]
+        bool_index = np.logical_and(bool_index, df[key].isin(wanted))
     return bool_index