Bug in json_path method for numeric fields

[natenho]

Expected

root.text_objects = this.json_path("$.body[?(@.type==1)]")

# In:  {"body":[{"type":1,"id":"foo"},{"type":2,"id":"bar"}]}
# Out: {"text_objects":[{"id":"foo","type":1}]}

Reference: https://www.benthos.dev/docs/guides/bloblang/methods/#examples-92

Actual

root.text_objects = this.json_path("$.body[?(@.type==1)]")

# In:  {"body":[{"type":1,"id":"foo"},{"type":2,"id":"bar"}]}
# Out: {"text_objects":[]}

A curious behavior is that when using operators like >, <, >= or <=, the comparison works as expected:

root.text_objects = this.json_path("$.body[?(@.type>1)]")

# In:  {"body":[{"type":1,"id":"foo"},{"type":2,"id":"bar"}]}
# Out: {"text_objects":[{"id":"bar","type":2}]}

So the current workaround for equality is to use >= && <=

root.text_objects = this.json_path("$.body[?(@.type>=1 && @.type<=1)]")

# In:  {"body":[{"type":1,"id":"foo"},{"type":2,"id":"bar"}]}
# Out: {"text_objects":[{"id":"foo","type":1}]}

[mihaitodor]

Hey @natenho, it looks like that's a limitation in the underlying library. I raised an issue about it here: PaesslerAG/jsonpath#35 and I'll wait for a reply from the maintainer(s) before trying to send them a PR.

As a workaround, I'd consider using bloblang for such queries: root."text_objects" = this.body.filter(x -> x.type == 1).