Filter expression with equals boolean expression value

Setup

Selector: $[?((@.key<44)==false)]

[{"key": 42}, {"key": 43}, {"key": 44}]

Results

Other responses

Bash (JSONPath.sh)

[]

C (json-glib)

Not supported

Unable to compile selector `$[?((@.key<44)==false)]': Invalid array index definition “?((@.key<44)==false)]”

Clojure (json-path) ¹

[]

Cpp (jsoncons)

[
  {
    "key": 44
  }
]

Dart (json_path)

[
  {
    "key": 44
  }
]

Elixir (ExJsonPath)

Not supported

syntax error before: '('

Elixir (jaxon)

[]

Elixir (warpath) ¹

Not supported

Parser error: Invalid token on line 1, syntax error before: '=='

Erlang (ejsonpath)

Not supported

syntax error before: '('

Golang (github.com-AsaiYusuke-jsonpath) ²

Not supported

invalid syntax (position=1, reason=unrecognized input, near=[?((@.key<44)==false)])

Golang (github.com-PaesslerAG-jsonpath) ¹

Not supported

parsing error: $[?((@.key<44)==false)]	:1:11 - 1:12 unexpected "<" while scanning parentheses expected ")"

Golang (github.com-bhmj-jsonslice) ¹ ³

[
  {
    "key": 44
  }
]

Golang (github.com-ohler55-ojg)

[
  {
    "key": 44
  }
]

Golang (github.com-oliveagle-jsonpath) ¹

[]

Golang (github.com-spyzhov-ajson)

[
  {
    "key": 44
  }
]

Golang (github.com-vmware-labs-yaml-jsonpath)

[
  {
    "key": 42
  },
  {
    "key": 43
  }
]

Haskell (jsonpath)

Not supported

Invalid JSONPath: $[?((@.key<44)==false)]
 Error: 1:15:
  |
1 | $[?((@.key<44)==false)]
  |               ^^
unexpected "=="
expecting "&&", "||", ')', or white space

JavaScript (Goessner) ²

[
  {
    "key": 44
  }
]

JavaScript (brunerd)

[
  {
    "key": 44
  }
]

JavaScript (jsonpath)

[
  {
    "key": 44
  }
]

JavaScript (jsonpath-plus)

[
  {
    "key": 44
  }
]

Java (com.github.jsurfer)

Not supported

line 1:4 no viable alternative at input '('
org.antlr.v4.runtime.misc.ParseCancellationException

Java (com.jayway.jsonpath) ¹ ³

Not supported

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
com.jayway.jsonpath.InvalidPathException: Expected character: )

Kotlin (com.nfeld.jsonpathkt) ¹

Not supported

Unexpected char, char=?, index=2

Objective-C (SMJJSONPath) ¹ ³

Not supported

Expected character ')' but found '='

PHP (galbar-jsonpath) ²

[
  {
    "key": 42
  },
  {
    "key": 43
  },
  {
    "key": 44
  }
]

PHP (remorhaz-jsonpath)

[
  {
    "key": 44
  }
]

Python (jsonpath) ²

Not found

jsonpath returned false, this might indicate an error

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 1:14 mismatched input '=' expecting ')'
ValueError("line 1:14 mismatched input '=' expecting ')'")

Raku (JSON-Path)

Not supported

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

Rust (jsonpath)

Not supported

parsing error

Rust (jsonpath_lib)

Not supported

path error: 
$[?((@.key<44)==false)]
^^^^^^^^^^^^^^^^

Rust (jsonpath_plus)

[
  {
    "key": 44
  }
]

Scala (jsonpath)

Not supported

JPError(end of input expected)

Swift (Sextant)

Not supported

NOT_SUPPORTED

dotNET (Json.NET)

Not supported

Unexpected character while parsing path query: (

dotNET (JsonCons.JsonPath)

[
  {
    "key": 44
  }
]

dotNET (JsonPath.Net)

Not supported

Pattern '((@.key<44...' not recognized.

dotNET (JsonPathLib)

[
  {
    "key": 44
  }
]

dotNET (Manatee.Json)

[
  {
    "key": 44
  }
]

JSON (Path_Reference_Implementation)

Not supported

 --> 1:3
  |
1 | $[?((@.key<44)==false)]
  |   ^---
  |
  = expected unionChild, unionArrayIndex, or sliceStart

Proposal (A)

Not supported

x 1:14-1:14 Exponent
| $[?((@.key<44)==false)]
|              ^
| x 1:14-1:14 Fraction
| | $[?((@.key<44)==false)]
| |              ^
| | 
|/  
o 1:12-1:14 Number
| $[?((@.key<44)==false)]
|            ^^
o 1:12-1:14 SimpleValue
| $[?((@.key<44)==false)]
|            ^^
o 1:12-1:14 FilterValue
| $[?((@.key<44)==false)]
|            ^^
o 1:6-1:14 HigherPrecedenceFilterExpression
| $[?((@.key<44)==false)]
|      ^^^^^^^^
x 1:6-1:6 LogicalOr
| $[?((@.key<44)==false)]
|      ^
| x 1:14-1:14 Exponent
| | $[?((@.key<44)==false)]
| |              ^
| | x 1:14-1:14 Fraction
| | | $[?((@.key<44)==false)]
| | |              ^
| | | 
| |/  
| o 1:12-1:14 Number
| | $[?((@.key<44)==false)]
| |            ^^
| o 1:12-1:14 SimpleValue
| | $[?((@.key<44)==false)]
| |            ^^
| o 1:12-1:14 FilterValue
| | $[?((@.key<44)==false)]
| |            ^^
| o 1:6-1:14 HigherPrecedenceFilterExpression
| | $[?((@.key<44)==false)]
| |      ^^^^^^^^
| x 1:6-1:6 LogicalAnd
| | $[?((@.key<44)==false)]
| |      ^
| | x 1:14-1:14 Exponent
| | | $[?((@.key<44)==false)]
| | |              ^
| | | x 1:14-1:14 Fraction
| | | | $[?((@.key<44)==false)]
| | | |              ^
| | | | 
| | |/  
| | o 1:12-1:14 Number
| | | $[?((@.key<44)==false)]
| | |            ^^
| | o 1:12-1:14 SimpleValue
| | | $[?((@.key<44)==false)]
| | |            ^^
| | o 1:12-1:14 FilterValue
| | | $[?((@.key<44)==false)]
| | |            ^^
| | o 1:6-1:14 HigherPrecedenceFilterExpression
| | | $[?((@.key<44)==false)]
| | |      ^^^^^^^^
| | | 
|/ /  
| | 
|/  
o 1:6-1:14 FilterExpression
| $[?((@.key<44)==false)]
|      ^^^^^^^^
o 1:5-1:15 UnaryFilterExpression
| $[?((@.key<44)==false)]
|     ^^^^^^^^^^
o 1:5-1:15 HigherPrecedenceFilterExpression
| $[?((@.key<44)==false)]
|     ^^^^^^^^^^
x 1:5-1:5 LogicalOr
| $[?((@.key<44)==false)]
|     ^
| x 1:14-1:14 Exponent
| | $[?((@.key<44)==false)]
| |              ^
| | x 1:14-1:14 Fraction
| | | $[?((@.key<44)==false)]
| | |              ^
| | | 
| |/  
| o 1:12-1:14 Number
| | $[?((@.key<44)==false)]
| |            ^^
| o 1:12-1:14 SimpleValue
| | $[?((@.key<44)==false)]
| |            ^^
| o 1:12-1:14 FilterValue
| | $[?((@.key<44)==false)]
| |            ^^
| o 1:6-1:14 HigherPrecedenceFilterExpression
| | $[?((@.key<44)==false)]
| |      ^^^^^^^^
| x 1:6-1:6 LogicalOr
| | $[?((@.key<44)==false)]
| |      ^
| | x 1:14-1:14 Exponent
| | | $[?((@.key<44)==false)]
| | |              ^
| | | x 1:14-1:14 Fraction
| | | | $[?((@.key<44)==false)]
| | | |              ^
| | | | 
| | |/  
| | o 1:12-1:14 Number
| | | $[?((@.key<44)==false)]
| | |            ^^
| | o 1:12-1:14 SimpleValue
| | | $[?((@.key<44)==false)]
| | |            ^^
| | o 1:12-1:14 FilterValue
| | | $[?((@.key<44)==false)]
| | |            ^^
| | o 1:6-1:14 HigherPrecedenceFilterExpression
| | | $[?((@.key<44)==false)]
| | |      ^^^^^^^^
| | x 1:6-1:6 LogicalAnd
| | | $[?((@.key<44)==false)]
| | |      ^
| | | x 1:14-1:14 Exponent
| | | | $[?((@.key<44)==false)]
| | | |              ^
| | | | x 1:14-1:14 Fraction
| | | | | $[?((@.key<44)==false)]
| | | | |              ^
| | | | | 
| | | |/  
| | | o 1:12-1:14 Number
| | | | $[?((@.key<44)==false)]
| | | |            ^^
| | | o 1:12-1:14 SimpleValue
| | | | $[?((@.key<44)==false)]
| | | |            ^^
| | | o 1:12-1:14 FilterValue
| | | | $[?((@.key<44)==false)]
| | | |            ^^
| | | o 1:6-1:14 HigherPrecedenceFilterExpression
| | | | $[?((@.key<44)==false)]
| | | |      ^^^^^^^^
| | | | 

Errors

PHP (Goessner) ²

ArgumentCountError

PHP (softcreatr-jsonpath)

Error: 'Malformed filter query'

Perl (JSON-Path)

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

Ruby (jsonpath)

comparison of Float with String failed

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.