QuackDB.Protocol.LogicalType (quackdb v0.1.0)

Decoder and metadata helpers for DuckDB logical types.

Maps Quack logical type ids to names, derives physical storage types, and exposes nested type metadata used by vector decoding.

Summary

id()

t()

array_size(type)

child_type(type)

decode(binary)

fixed_size(type)

id(name)

name(id)

@type id() :: non_neg_integer()

@type t() :: %QuackDB.Protocol.LogicalType{
  id: id(),
  name: atom() | nil,
  type_info: map() | nil
}

@spec array_size(t()) :: non_neg_integer()

@spec child_type(t()) :: t()

@spec decode(binary()) :: QuackDB.Protocol.Reader.read_result(t())

@spec fixed_size(atom()) :: pos_integer()

@spec fixed_size?(atom()) :: boolean()

@spec id(atom()) :: id()

@spec name(id()) :: atom() | nil

@spec physical_type(t()) :: atom()

@spec struct_children(t()) :: [%{name: String.t(), type: t()}]