| # Licensed to the Apache Software Foundation (ASF) under one |
| # or more contributor license agreements. See the NOTICE file |
| # distributed with this work for additional information |
| # regarding copyright ownership. The ASF licenses this file |
| # to you under the Apache License, Version 2.0 (the |
| # "License"); you may not use this file except in compliance |
| # with the License. You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, |
| # software distributed under the License is distributed on an |
| # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| # KIND, either express or implied. See the License for the |
| # specific language governing permissions and limitations |
| # under the License. |
| |
| """ |
| PyArrow compatibility module for Python 3.6 and PyArrow 5.0.0 |
| """ |
| |
| import pyarrow as pa |
| import pyarrow.compute as pc |
| |
| |
| def sort_table_by_column(table: pa.Table, column_name: str, order: str = 'ascending') -> pa.Table: |
| """ |
| Sort a PyArrow Table by a column name. |
| This function provides compatibility for PyArrow 5.0.0 which doesn't have Table.sort_by method. |
| """ |
| if hasattr(table, 'sort_by'): |
| # PyArrow >= 6.0 has native sort_by method |
| return table.sort_by(column_name) |
| else: |
| # PyArrow 5.0 compatibility using sort_indices and take |
| indices = pc.sort_indices(table, sort_keys=[(column_name, order)]) |
| return table.take(indices) |
| |
| |
| table_sort_by = sort_table_by_column |
