Module extensions 

Support for Substrait simple and advanced extensions.

Simple extensions describe YAML/URN-backed extension entities such as functions, types, and type variations. Advanced extensions carry google.protobuf.Any payloads for custom relation types, relation enhancements, and optimization hints.

The registry APIs connect those protobuf payloads to text-format arguments by way of Explainable implementations.

Re-exports

pub use any::Any;

pub use any::AnyRef;

pub use args::EnumValue;

pub use args::Expr;

pub use args::ExtensionArgs;

pub use args::ExtensionColumn;

pub use args::ExtensionValue;

pub use args::ExtensionValueKind;

pub use args::TupleValue;

pub use registry::AnyConvertible;

pub use registry::Explainable;

pub use registry::Extension;

pub use registry::ExtensionError;

pub use registry::ExtensionProtoConvert;

pub use registry::ExtensionRegistry;

pub use registry::ExtensionType;

pub use registry::RegistrationError;

pub use simple::InsertError;

pub use simple::SimpleExtension;

pub use simple::SimpleExtensions;

Modules

any

args

Text-format data structures used by registered advanced extension handlers.

examples

PartitionHint demonstrates how to implement a custom enhancement: positional enum arguments combined with an optional named integer argument.

registry

Registry for custom Substrait advanced extension payloads.

simple