Function

JsonPathquery

since: 0.14

Declaration [src]

JsonNode*
json_path_query (
  const char* expression,
  JsonNode* root,
  GError** error
)

Description [src]

Queries a JSON tree using a JSONPath expression.

This function is a simple wrapper around json_path_new(), json_path_compile(), and json_path_match(). It implicitly creates a JsonPath instance, compiles the given expression and matches it against the JSON tree pointed by root.

Available since: 0.14

Parameters

expression

Type: const char*

A JSONPath expression.

The data is owned by the caller of the function.

The value is a NUL terminated UTF-8 string.

root

Type: JsonNode

The root of a JSON tree.

The data is owned by the caller of the function.

error

Type: GError **

The return location for a recoverable error.

The argument can be NULL.

If the return location is not NULL, then you must initialize it to a NULL GError*.

The argument will left initialized to NULL by the function if there are no errors.

In case of error, the argument will be set to a newly allocated GError; the caller will take ownership of the data, and be responsible for freeing it.

Return value

Type: JsonNode

A newly-created node of type JSON_NODE_ARRAY containing the array of matching nodes.

The caller of the function takes ownership of the data, and is responsible for freeing it.