signet::forge::thrift::DataPageHeaderV2 Struct Reference

Parquet data page header V2 (parquet.thrift fields 1-7). More...

#include <types.hpp>

Public Member Functions
	DataPageHeaderV2 ()=default
void	serialize (CompactEncoder &enc) const
expected< void >	deserialize (CompactDecoder &dec)
bool	effective_is_compressed () const
	Effective is_compressed value (defaults to true per Parquet spec if absent).

Public Attributes
int32_t	num_values = 0
	Total values including nulls (field 1).
int32_t	num_nulls = 0
	Number of null values (field 2).
int32_t	num_rows = 0
	Number of rows in this page (field 3).
Encoding	encoding = Encoding::PLAIN
	Data encoding (field 4).
int32_t	definition_levels_byte_length = 0
	Byte length of def levels (field 5).
int32_t	repetition_levels_byte_length = 0
	Byte length of rep levels (field 6).
std::optional< bool >	is_compressed
	Whether values are compressed (field 7, default true).

Detailed Description

Parquet data page header V2 (parquet.thrift fields 1-7).

V2 data pages separate level data from value data and can optionally leave value data uncompressed (levels are always uncompressed).

Definition at line 828 of file types.hpp.

Constructor & Destructor Documentation

DataPageHeaderV2()

signet::forge::thrift::DataPageHeaderV2::DataPageHeaderV2 ( )

default

Member Function Documentation

deserialize()

expected< void > signet::forge::thrift::DataPageHeaderV2::deserialize ( CompactDecoder &  dec )

inline

Definition at line 860 of file types.hpp.

effective_is_compressed()

bool signet::forge::thrift::DataPageHeaderV2::effective_is_compressed ( ) const

inline

Effective is_compressed value (defaults to true per Parquet spec if absent).

Definition at line 923 of file types.hpp.

serialize()

void signet::forge::thrift::DataPageHeaderV2::serialize ( CompactEncoder &  enc ) const

inline

Definition at line 839 of file types.hpp.

Member Data Documentation

definition_levels_byte_length

int32_t signet::forge::thrift::DataPageHeaderV2::definition_levels_byte_length = 0

Byte length of def levels (field 5).

Definition at line 833 of file types.hpp.

encoding

Encoding signet::forge::thrift::DataPageHeaderV2::encoding = Encoding::PLAIN

Data encoding (field 4).

Definition at line 832 of file types.hpp.

is_compressed

std::optional<bool> signet::forge::thrift::DataPageHeaderV2::is_compressed

Whether values are compressed (field 7, default true).

Definition at line 835 of file types.hpp.

num_nulls

int32_t signet::forge::thrift::DataPageHeaderV2::num_nulls = 0

Number of null values (field 2).

Definition at line 830 of file types.hpp.

num_rows

int32_t signet::forge::thrift::DataPageHeaderV2::num_rows = 0

Number of rows in this page (field 3).

Definition at line 831 of file types.hpp.

num_values

int32_t signet::forge::thrift::DataPageHeaderV2::num_values = 0

Total values including nulls (field 1).

Definition at line 829 of file types.hpp.

repetition_levels_byte_length

int32_t signet::forge::thrift::DataPageHeaderV2::repetition_levels_byte_length = 0

Byte length of rep levels (field 6).

Definition at line 834 of file types.hpp.

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

• include/signet/thrift/types.hpp