Parquet schema element (parquet.thrift fields 1-10). More...

#include <types.hpp>

Public Member Functions
	SchemaElement ()=default

void	serialize (CompactEncoder &enc) const

expected< void >	deserialize (CompactDecoder &dec)

Public Attributes
std::optional< PhysicalType >	type
	Physical type (field 1, absent for group nodes).

std::optional< int32_t >	type_length
	Type length for FIXED_LEN_BYTE_ARRAY (field 2).

std::optional< Repetition >	repetition_type
	REQUIRED/OPTIONAL/REPEATED (field 3).

std::string	name
	Column or group name (field 4, required).

std::optional< int32_t >	num_children
	Number of children for group nodes (field 5).

std::optional< ConvertedType >	converted_type
	Legacy converted type (field 6).

std::optional< int32_t >	scale
	Decimal scale (field 7).

std::optional< int32_t >	precision
	Decimal precision (field 8).

std::optional< int32_t >	field_id
	Field ID for nested type evolution (field 9).

std::optional< LogicalTypeUnion >	logical_type
	LogicalType union (field 10, preferred).

Detailed Description

Parquet schema element (parquet.thrift fields 1-10).

Represents a single node in the Parquet schema tree. Leaf nodes have a physical type; group nodes have num_children instead. Fields 9 (field_id) and 10 (logicalType) added per parquet-format 2.9.0.

Definition at line 530 of file types.hpp.

Constructor & Destructor Documentation

◆ SchemaElement()

signet::forge::thrift::SchemaElement::SchemaElement ( )

default

Member Function Documentation

◆ deserialize()

expected< void > signet::forge::thrift::SchemaElement::deserialize ( CompactDecoder & dec )

inline

Definition at line 589 of file types.hpp.

◆ serialize()

void signet::forge::thrift::SchemaElement::serialize ( CompactEncoder & enc ) const

inline

Definition at line 544 of file types.hpp.

Member Data Documentation

◆ converted_type

std::optional<ConvertedType> signet::forge::thrift::SchemaElement::converted_type

Legacy converted type (field 6).

Definition at line 536 of file types.hpp.

◆ field_id

std::optional<int32_t> signet::forge::thrift::SchemaElement::field_id

Field ID for nested type evolution (field 9).

Definition at line 539 of file types.hpp.

◆ logical_type

std::optional<LogicalTypeUnion> signet::forge::thrift::SchemaElement::logical_type

LogicalType union (field 10, preferred).

Definition at line 540 of file types.hpp.

◆ name

std::string signet::forge::thrift::SchemaElement::name

Column or group name (field 4, required).

Definition at line 534 of file types.hpp.

◆ num_children

std::optional<int32_t> signet::forge::thrift::SchemaElement::num_children

Number of children for group nodes (field 5).

Definition at line 535 of file types.hpp.

◆ precision

std::optional<int32_t> signet::forge::thrift::SchemaElement::precision

Decimal precision (field 8).

Definition at line 538 of file types.hpp.

◆ repetition_type

std::optional<Repetition> signet::forge::thrift::SchemaElement::repetition_type

REQUIRED/OPTIONAL/REPEATED (field 3).

Definition at line 533 of file types.hpp.

◆ scale

std::optional<int32_t> signet::forge::thrift::SchemaElement::scale

Decimal scale (field 7).

Definition at line 537 of file types.hpp.

◆ type

std::optional<PhysicalType> signet::forge::thrift::SchemaElement::type

Physical type (field 1, absent for group nodes).

Definition at line 531 of file types.hpp.

◆ type_length

std::optional<int32_t> signet::forge::thrift::SchemaElement::type_length

Type length for FIXED_LEN_BYTE_ARRAY (field 2).

Definition at line 532 of file types.hpp.

The documentation for this struct was generated from the following file:

include/signet/thrift/types.hpp

Public Member Functions

Public Attributes