laminar-derive

Derive macros for LaminarDB Record and FromRecordBatch traits.

Overview

Provides procedural macros that automatically generate Arrow RecordBatch conversion code for Rust structs, enabling zero-boilerplate typed data ingestion and result consumption.

Usage

use laminar_derive::FromRecordBatch;

#[derive(FromRecordBatch)]
struct Trade {
    symbol: String,
    price: f64,
    volume: i64,
    ts: i64,
}

The FromRecordBatch derive generates from_batch() and from_batch_all() methods that convert Arrow RecordBatches into typed Rust structs. Used with LaminarDB::subscribe::<Trade>("stream_name") for typed result consumption.

Related Crates

• laminar-core -- Record trait definition
• laminar-db -- TypedSubscription<T> and SourceHandle<T> that use derived traits