Morph MORPH
SIGN IN SIGN UP
apache / arrow UNCLAIMED

Apache Arrow is the universal columnar format and multi-language toolbox for fast data interchange and in-memory analytics

0 0 75 C++
Normal View History Raw
ARROW-8918: [C++][Python] Implement cast metafunction to allow use of "cast" with CallFunction, use in Python This provides the `CAST(data AS target_type)` SQL idiom. The target_type is provided via CastOptions (FWIW I believe this is the most correct approach for handling the target_type). As a result we no longer need to maintain separate binding boilerplate in Python for Array vs. ChunkedArray Closes #7258 from wesm/ARROW-8918 Authored-by: Wes McKinney <wesm+git@apache.org> Signed-off-by: Wes McKinney <wesm+git@apache.org>
2020-05-28 16:07:19 -05:00
# 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.
# cython: language_level = 3
from pyarrow.lib cimport *
from pyarrow.includes.common cimport *
from pyarrow.includes.libarrow cimport *
ARROW-9469: [Python] Make more objects weakrefable By default, Cython extension classes (defined with "cdef class") don't have a weakref slot, so add one to all of them. This adds just one memory word to each object, which IMHO is acceptable. Closes #7758 from pitrou/ARROW-9469-py-weakrefable-objects Authored-by: Antoine Pitrou <antoine@python.org> Signed-off-by: Krisztián Szűcs <szucs.krisztian@gmail.com>
2020-07-29 12:24:36 +02:00
cdef class FunctionOptions(_Weakrefable):
ARROW-13025: [C++][Python] Add FunctionOptions::Equals/ToString/Serialize This is a draft of adding more utility methods to FunctionOptions. It's not fully implemented (it needs rebasing + serialization isn't implemented for most options, plus there are various TODOs scattered). But before I proceed further, I wanted to get some feedback. Some concerns I have: - I don't like adding protected methods to a struct, and it's inconsistent with how equality is implemented for other structs (via a visitor or otherwise centralized in a single location). However ARROW-8891 will require that we be able to define kernels - and presumably their options - in a separate shared library, so I don't think we can do much better than this. - But for (de)serialization, we'll still need some way to dynamically register the mapping between a type_name and the actual struct, so maybe this is a moot point. - I've exposed the fact that serialization uses StructScalars to support Expression - but maybe this is too much to commit to in the API? Closes #10511 from lidavidm/arrow-13025 Authored-by: David Li <li.davidm96@gmail.com> Signed-off-by: Benjamin Kietzman <bengilgit@gmail.com>
2021-06-30 14:23:23 -04:00
cdef:
ARROW-12060: [Python] Enable calling compute functions on Expressions Closes #11918 from jorisvandenbossche/ARROW-12060-expressions-compute Authored-by: Joris Van den Bossche <jorisvandenbossche@gmail.com> Signed-off-by: Joris Van den Bossche <jorisvandenbossche@gmail.com>
2022-01-18 21:39:53 +01:00
shared_ptr[CFunctionOptions] wrapped
ARROW-8918: [C++][Python] Implement cast metafunction to allow use of "cast" with CallFunction, use in Python This provides the `CAST(data AS target_type)` SQL idiom. The target_type is provided via CastOptions (FWIW I believe this is the most correct approach for handling the target_type). As a result we no longer need to maintain separate binding boilerplate in Python for Array vs. ChunkedArray Closes #7258 from wesm/ARROW-8918 Authored-by: Wes McKinney <wesm+git@apache.org> Signed-off-by: Wes McKinney <wesm+git@apache.org>
2020-05-28 16:07:19 -05:00
cdef const CFunctionOptions* get_options(self) except NULL
ARROW-12060: [Python] Enable calling compute functions on Expressions Closes #11918 from jorisvandenbossche/ARROW-12060-expressions-compute Authored-by: Joris Van den Bossche <jorisvandenbossche@gmail.com> Signed-off-by: Joris Van den Bossche <jorisvandenbossche@gmail.com>
2022-01-18 21:39:53 +01:00
cdef void init(self, const shared_ptr[CFunctionOptions]& sp)
cdef inline shared_ptr[CFunctionOptions] unwrap(self)
ARROW-15077: [Python] Move Expression class from _dataset to _compute cython module Closes #11938 from jorisvandenbossche/ARROW-15077 Authored-by: Joris Van den Bossche <jorisvandenbossche@gmail.com> Signed-off-by: Krisztián Szűcs <szucs.krisztian@gmail.com>
2022-01-14 14:17:01 +01:00
cdef CExpression _bind(Expression filter, Schema schema) except *
cdef class Expression(_Weakrefable):
cdef:
CExpression expr
cdef void init(self, const CExpression& sp)
@staticmethod
cdef wrap(const CExpression& sp)
cdef inline CExpression unwrap(self)
@staticmethod
cdef Expression _expr_or_scalar(object expr)
ARROW-14292: [C++][Python] Join foundation for Tables This implements the `Table.join` method and the underlying infrastructure. It provides the `tables_join` function that wraps the `execplan` machinery and tests to verify that joins work as expected. Closes #12452 from amol-/ARROW-14292 Lead-authored-by: Alessandro Molina <amol@turbogears.org> Co-authored-by: Joris Van den Bossche <jorisvandenbossche@gmail.com> Signed-off-by: Joris Van den Bossche <jorisvandenbossche@gmail.com>
2022-03-29 17:59:04 +02:00
cdef CExpression _true
Reference in New Issue Copy Permalink