data-generation

I'm trying to generate Order instances using the Stream API. I have a factory function that creates the order, and a DoubleStream is used to initialize the amount of the order. private DoubleStream doubleStream = new Random().doubles(50.0, 200.0); private Order createOrder() { return new Order(doubleStream.findFirst().getAsDouble()); } @Test public void test() { Stream<Order> orderStream = Stream.generate(() -> { return createOrder(); }); orderStream.limit(10).forEach(System.out::println); If I initialize the Order instance using a literal (1.0), this works fine. When I use the doubleStream to

I'm looking for recommendations of a good, free tool for generating sample data for the purpose of loading into test databases. By analogy, something that produces " lorem ipsum " text for any RDBMS. Features I'm looking for include: Flexibility to generate data for an existing table definition. Ability to generate small and large data sets (> 1 million rows or more). Generate in SQL script format ( INSERT statements) or else in a flat file format suitable for bulk import (which is usually faster). A command-line interface for easy scripting. Extensible, open source, written in a dynamic