Module json 

JSON construction, serialization, and manipulation nodes.

JSON is a first-class Value type in the GK. Nodes can produce and consume Value::Json(std::sync::Arc::new(serde_json::Value)) directly, avoiding serialization/deserialization round-trips when passing structured data between nodes or to adapters that consume JSON natively.

Objects are built compositionally: json_with(key, value) produces a single-pair partial Json, and the variadic json_object(parts...) merges them. Workload syntax:

record := json_object(
    json_with("name", name_wire),
    json_with("age", age_wire),
)

Structs

ArrayAt

Return the element at a given index from a bracket-encoded array.

ArrayLen

Return the number of elements in a bracket-encoded array string.

BodyColumnI32

body_column_i32(body, "name") — extract the named column from every row of a JSON result body, parse each as i32, and return the values as a VecI32 wire.

EscapeJson

Escape a string for safe embedding in a JSON string value.

JsonArray

Build a JSON array from N inputs.

JsonField

Extract a field from a JSON object by key.

JsonMerge

Merge two JSON objects into one (shallow merge, right wins).

JsonObject

Merge N partial Json Objects into a single Json Object.

JsonText

Flatten a JSON tree into a single newline-separated text by concatenating every leaf value’s textual form.

JsonToStr

Serialize a JSON value to a compact string.

JsonToStrPretty

Serialize a JSON value to a pretty-printed string.

JsonWith

Build a single-pair partial JSON object: { key: value }.

NormalizeVector

L2-normalize a bracket-encoded float vector string [1.0,2.0,3.0].

RandomVector

Generate a deterministic f64 vector as a bracket-encoded JSON array string.

StrToJson

Parse a JSON string into a JSON value.

ToJson

Wrap a single value as a JSON value.