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Single-Level vs Multi-Level Wildcard produces unexpected result on Predicate #70
Description
Hello!
I've encountered what I believe could be a bug when evaluating some JSONata:
I have the following JSON:
[
{
"value": {
"Name": "Cell1",
"Product": "Product1"
}
},
{
"value": {
"Name": "Cell2",
"Product": "Product2"
}
}
]I am attempting to run the following JSONata expression against it:
*[value.Product = 'Product1']
I expect the result to be
{
"value": {
"Name": "Cell1",
"Product": "Product1"
}
}But instead I receive null.
Changing the expression to the following does produce the correct response.
**[value.Product = 'Product1']
I've verified that I do receive that expected bit of JSON on https://try.jsonata.org/.
This is what my code looks like:
import static com.dashjoin.jsonata.Jsonata.jsonata;
import com.fasterxml.jackson.databind.ObjectMapper;
public class Main {
public static void main(String[] args) throws Throwable {
String json = "[\n" +
" {\n" +
" \"value\": {\n" +
" \"Name\": \"Cell1\",\n" +
" \"Product\": \"Product1\"\n" +
" }\n" +
" },\n" +
" {\n" +
" \"value\": {\n" +
" \"Name\": \"Cell2\",\n" +
" \"Product\": \"Product2\"\n" +
" }\n" +
" }\n" +
"]";
var data = new ObjectMapper().readValue(json, Object.class);
var expression = jsonata("*[value.Product = 'Product1']");
var result = expression.evaluate(data); // Expecting the first object in the array, but get null instead
var expression2 = jsonata("**[value.Product = 'Product1']");
var result2 = expression2.evaluate(data); // Received the first object in the array as expected
}
}I apologize if this isn't the right avenue or format for a bug report, or if there is something trivial that I've missed.
Thank you in advance for any help/guidance :)
Activity
Single-Level vs Multi-Level Wildcard produces unexpected result on
aeberhart commentedon Sep 27, 2025
Dear @JohnBehnke, thanks for reporting this. Using the main branch, both expressions fail for me and return null. Can you please double check that on your end and also report the version you're using? Thanks!
JohnBehnke commentedon Sep 28, 2025
@aeberhart Thank you for looking! I'm using
0.9.8. I tried the main branch and double checked in my project (using 0.9.8), and I getnullforresultand the first object forresult2aeberhart commentedon Sep 29, 2025
Thanks! We'll look into this ASAP. I guess you're using ** as the workaround?
JohnBehnke commentedon Sep 29, 2025
Thank you for looking into this! Yeah, the
**works in my use case since its a flat array.fix test and add new wildcard test (* on array of object) #70