Duplicate results no filter

[gkorland]

Filter might return duplicate results when the internal objects are similar.

e.g. input JSON both objects have name == {"first":"A","middle":"A"}

[{{"name":{"first":"A","middle":"A"},"rank":8},{"name":{"first":"A","middle":"A"},"rank":90}]

When running:

$[?($.name.first=="A")]

The following result is returned:

[{{"name":{"first":"A","middle":"A"},"rank":8},{"name":{"first":"A","middle":"A"},"rank":8},{{"name":{"first":"A","middle":"A"},"rank":90},{"name":{"first":"A","middle":"A"},"rank":90}]

It seems like the bug is in this code which compares all the candidates with all values and return each "parent" twice.

jsonpath/src/select/expr_term.rs

Line 107 in 1a84c5a

for result_value in &ret {

ref RedisJSON/RedisJSON#667

[cburgmer]

Here's a working example (above syntax is broken):

[{"name":{"first":"A"},"rank":8},{"name":{"first":"A"},"rank":90}]

for selector

$[?(@.name.first=="A")]

Interestingly enough a simpler document works:

[{"name": "A","rank":8},{"name": "A","rank":90}]

$[?(@.name=="A")]