JSON > JSONPath

JSONPath allows to select nodes from JSON tree using combination of paths and conditions.

There are two methods in THtJSONNode that accepts JSONPath expressions:

function Find(const APath: hstring): IHtJSONIterator - returns node enumerator

function FindValue(const APath: string): PHtJSON - returns first found node.

Library supports standard JSONPath syntax https://www.rfc-editor.org/rfc/rfc9535 with the following extensions:

Starting $. can be omitted.

@. can be omitted in conditions.

? can be omitted in conditions

aggregate functions sum(), max(), min(), avg(), first(), last(), list(), count() can be used at the end of expression

additional supported operators:

*= contains substring

^= starting with

$= ending with

Example of JSONPath expressions:

result.* - all elements in result array of root object

result[delivered = true] - all result child elements with delivered = true