jsonpath_expression.md

jsoncons::jsonpath::jsonpath_expression

#include <jsoncons_ext/jsonpath/jsonpath.hpp>

template <typename Json>
class jsonpath_expression

Member functions

evaluate	Select values from a JSON document
select (since 0.172.0)	Select values from a JSON document
select_paths (since 0.172.0)	Select paths of values selected from a JSON document
update (since 0.172.0)	Update a JSON document in place

template <typename BinaryOp>
void update(const_reference root, BinaryOp op);                                   (1) (since 0.172.0)

(1) Evaluates the root value against the compiled JSONPath expression and calls a provided callback repeatedly with the results.

Parameters

root	Root JSON value
op	A function object that accepts a path and a reference to a Json value. It must have function call signature equivalent to void fun(const basic_path_node<Json::char_type>& path, Json& val);

Non-member functions

make_expression

Returns a `jsonpath_expression` for later evaluation. (since 0.161.0)