JSON Path

Files
file	json/json.hpp

Classes
class	cudf::get_json_object_options
	Settings for get_json_object(). More...

Functions
std::unique_ptr< cudf::column >	cudf::get_json_object (cudf::strings_column_view const &col, cudf::string_scalar const &json_path, get_json_object_options options=get_json_object_options{}, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::mr::device_memory_resource *mr=rmm::mr::get_current_device_resource())
	Apply a JSONPath string to all rows in an input strings column. More...

Detailed Description

Function Documentation

get_json_object()

std::unique_ptr<cudf::column> cudf::get_json_object	(	cudf::strings_column_view const &	col,
		cudf::string_scalar const &	json_path,
		get_json_object_options	options = get_json_object_options{},
		rmm::cuda_stream_view	stream = cudf::get_default_stream(),
		rmm::mr::device_memory_resource *	mr = rmm::mr::get_current_device_resource()
	)

Apply a JSONPath string to all rows in an input strings column.

Applies a JSONPath string to an incoming strings column where each row in the column is a valid json string. The output is returned by row as a strings column.

https://tools.ietf.org/id/draft-goessner-dispatch-jsonpath-00.html Implements only the operators: $ . [] *

Exceptions

std::invalid_argument

if provided an invalid operator or an empty name

Parameters

col	The input strings column. Each row must contain a valid json string
json_path	The JSONPath string to be applied to each row
options	Options for controlling the behavior of the function
stream	CUDA stream used for device memory operations and kernel launches
mr	Resource for allocating device memory

Returns

New strings column containing the retrieved json object strings