Red Gandiva is the Ruby bindings of Gandiva. Red Gandiva is based on GObject
Introspection.

Gandiva is a toolset for compiling and evaluating expressions on Arrow data.

GObject Introspection is a middleware for language bindings of C library.
GObject Introspection can generate language bindings automatically at runtime.

Red Gandiva uses Gandiva GLib and gobject-introspection gem to generate Ruby
bindings of Gandiva.

See also: https://github.com/apache/arrow/tree/master/ruby/red-gandiva