libcudf  24.04.00
convert_datetime.hpp
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2019-2023, NVIDIA CORPORATION.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 #pragma once
17 
18 #include <cudf/column/column.hpp>
20 
21 #include <rmm/mr/device/per_device_resource.hpp>
22 
23 #include <string>
24 #include <vector>
25 
26 namespace cudf {
27 namespace strings {
87 std::unique_ptr<column> to_timestamps(
88  strings_column_view const& input,
89  data_type timestamp_type,
90  std::string_view format,
91  rmm::cuda_stream_view stream = cudf::get_default_stream(),
92  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
93 
135 std::unique_ptr<column> is_timestamp(
136  strings_column_view const& input,
137  std::string_view format,
138  rmm::cuda_stream_view stream = cudf::get_default_stream(),
139  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
140 
247 std::unique_ptr<column> from_timestamps(
248  column_view const& timestamps,
249  std::string_view format = "%Y-%m-%dT%H:%M:%SZ",
251  data_type{type_id::STRING}, 0, nullptr, nullptr, 0}),
252  rmm::cuda_stream_view stream = cudf::get_default_stream(),
253  rmm::mr::device_memory_resource* mr = rmm::mr::get_current_device_resource());
254  // end of doxygen group
256 } // namespace strings
257 } // namespace cudf
A non-owning, immutable view of device data as a column of elements, some of which may be null as ind...
Indicator for the logical data type of an element in a column.
Definition: types.hpp:241
Given a column-view of strings type, an instance of this class provides a wrapper on this compound co...
Class definition for cudf::column.
rmm::cuda_stream_view const get_default_stream()
Get the current default stream.
std::unique_ptr< column > is_timestamp(strings_column_view const &input, std::string_view format, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Verifies the given strings column can be parsed to timestamps using the provided format pattern.
std::unique_ptr< column > from_timestamps(column_view const &timestamps, std::string_view format="%Y-%m-%dT%H:%M:%SZ", strings_column_view const &names=strings_column_view(column_view{ data_type{type_id::STRING}, 0, nullptr, nullptr, 0}), rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Returns a new strings column converting a timestamp column into strings using the provided format pat...
std::unique_ptr< column > to_timestamps(strings_column_view const &input, data_type timestamp_type, std::string_view format, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
Returns a new timestamp column converting a strings column into timestamps using the provided format ...
@ STRING
String elements.
cuDF interfaces
Definition: aggregation.hpp:34
Class definition for cudf::strings_column_view.