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Incorrect parsing of JSONPath query #2947

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tmoers opened this issue Apr 24, 2024 · 2 comments
Open

Incorrect parsing of JSONPath query #2947

tmoers opened this issue Apr 24, 2024 · 2 comments

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@tmoers
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tmoers commented Apr 24, 2024

The following JSONPath selector fails

$.Sensors[?(@.SensorId=="left-id")].SensorName

to parse with the message

Unexpected character while parsing path query: "

Here is some minimal example to reproduce it:

var token = new Newtonsoft.Json.Linq.JValue(false);
token.SelectToken("$.Sensors[?(@.SensorId==\"left-id\")].SensorName", false);
@elgonzo
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elgonzo commented Apr 24, 2024

Note that Newtonsoft.Json implements (with slight inaccuracies) only a very old style/version of JSONPath described at https://goessner.net/articles/JsonPath. Old-ish JSONPath specification drafts (including relatively recent ones, like the one from 2020) only allowed single quotes in JSONPath expression. Hence the error message.

@tmoers
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tmoers commented Apr 24, 2024

Oh, great.. I didn't realize. I just tried it and single quotes indeed works!

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