Example of retrieving JSON or unmarshalled object

[lordofscripts]

I am trying to use GoJQ in my program, not as a command-line type query, but to efficiently query a LARGE JSON object.

The examples are more CLI-oriented and the methods appear to return iterators. Is there a way to run a query on that large object and as return, instead of a plain value or iterator, return either the resulting JSON sub-object that I can un-marshal?

[itchyny]

You can unmarshal your json object into any type and pass it to gojq. I'm not sure what you actually need, without some sample code you want to achieve.

[lordofscripts]

What I meant was that, if I passed my entire JSON to GoJQ, when I query for a subset of the whole, I would like that JSON subset as the query return rather than an iterator.

bytes, err := os.ReadFile(JSON_FILE)
data := map[string]any{}
dec := json.NewDecoder(strings.NewReader(string(bytes)))
dec.Decode(&data)
query, err := gojq.Parse(`.revisions[0].categories[] | select(.code=="5")`)
iter := query.Run(data)

This gets me to iterate through each individual Member. But what if rather than that (the iterator), I would like something I can i Marshall (given that I know the underlying data model of the result). Is that possible with GoJQ? I am stumped at that point.

[wader]

You can use the iterator to collect all values, call Next() until it's done. Something like this https://go.dev/play/p/UVvb2pMhwdk

[itchyny]

Right, you can collect the results into a slice. The output of jq query is essentially an iterator, which may emit nothing (consider your query does not match any categories), or may emit infinite number of results (consider repeat(0) or range(infinite)). It is up to you how to handle these cases.