SetBuilder

SetBuilder's purpose is to transform described data sets into queries or natural language.

Example

The following set describes a group of people using simple data structures (Arrays, Strings, Symbols, and Hashes):

 [[:awesome],
  [:attended, "school"],
  [:died, :not],
  [:name, {:is => "Jerome"}]]

SetBuilder can render this set in plain English:

[Everyone] who is awesome, who attended school, who has not died, and whose name is Jerome.

It can also generate a NamedScope on an ActiveRecord model to fetch the people who fit in this set.

Usage

Roadmap

Right now SetBuilder uses ActiveRecord::NamedScope::Scope internally, but it shouldn't be hard to refactor it to use DataMapper's composable queries instead.