Dot notation after filter expression

Setup

Selector: $[?(@.id==42)].name

[{"id": 42, "name": "forty-two"}, {"id": 1, "name": "one"}]

Results

Consensus

[
  "forty-two"
]

Other responses

C (json-glib)

Not supported

Unable to compile selector `$[?(@.id==42)].name': Invalid array index definition “?(@.id==42)].name”

Clojure (json-path) ¹

[]

Elixir (jaxon)

[]

Golang (github.com-oliveagle-jsonpath) ¹

[]

Kotlin (com.nfeld.jsonpathkt) ¹

Not supported

Unexpected char, char=?, index=2

Python (jsonpath-ng)

Not supported

JsonPathLexerError('Error on line 1, col 2: Unexpected character: ? ')

Python (jsonpath-rw)

Not supported

JsonPathLexerError('Error on line 1, col 2: Unexpected character: ? ')

Python (jsonpath2)

Not supported

line 1:9 extraneous input '=' expecting {'@', '$', 'true', 'false', 'null', '{', '[', STRING, NUMBER}
ValueError("line 1:9 extraneous input '=' expecting {'@', '$', 'true', 'false', 'null', '{', '[', STRING, NUMBER}")

Raku (JSON-Path)

Not supported

Evaluation of embedded Perl 6 code not allowed (construct with :allow-eval)

Rust (jsonpath)

[]

JSON (Path_Reference_Implementation)

Not supported

 --> 1:3
  |
1 | $[?(@.id==42)].name
  |   ^---
  |
  = expected unionChild, unionArrayIndex, or sliceStart

Errors

PHP (Goessner) ²

ArgumentCountError

Perl (JSON-Path)

non-safe evaluation, died at main.pl line 11.

Footnotes

• ¹ This implementation returns a single value where only one match is possible (instead of an array of a single value).
• ² This implementation returns a specific not found value if no match exists.
• ³ This implementation returns a specific not found value if a query that would regularly return a single match results in no match.