Module builder 

Macros

make_col_builder 🔒

Structs

ArrowBuilder

ArrowColumn 🔒

Enums

ColBuilder 🔒

An enum wrapper for all arrow builder types that we support. Used to store a builder for each column and avoid dynamic dispatch and downcasting when appending data.

Constants

ARROW_EXTENSION_NAME_KEY

EXTENSION_PREFIX 🔒

Functions

builder_for_datatype 🔒

desc_to_schema

Converts a RelationDesc to an Arrow Schema.

desc_to_schema_with_overrides

Converts a RelationDesc to an Arrow Schema, with optional type overrides.

field_with_typename 🔒

Create a Field and include the materialize ‘type name’ as an extension in the metadata.

scalar_to_arrow_datatype 🔒

Return the appropriate Arrow DataType for the given SqlScalarType, plus a string that should be used as part of the Arrow ‘Extension Type’ name for fields using this type: https://arrow.apache.org/docs/format/Columnar.html#extension-types

scalar_to_arrow_datatype_impl 🔒

Core implementation of scalar-to-arrow type conversion with override support.

scalar_to_arrow_datatype_with_overrides 🔒

Return the appropriate Arrow DataType for the given SqlScalarType, with optional type overrides. The override function is called for each SqlScalarType (including nested types) and can return Some((DataType, extension_name)) to override the default mapping.

typename_from_field 🔒

Extract the materialize ‘type name’ from the metadata of a Field. Returns an error if the field doesn’t have extension metadata.