storages::clickhouse::io::columns::MismatchedEndiannessUuidColumn Class Reference

Table of Contents

• Public Types
• Public Member Functions
• Static Public Member Functions
• Detailed Description
• Member Typedef Documentation
• container_type
• cpp_type

Legacy broken ClickHouse UUID column representation. More...

#include <userver/storages/clickhouse/io/columns/uuid_column.hpp>

Inheritance diagram for storages::clickhouse::io::columns::MismatchedEndiannessUuidColumn:

Collaboration diagram for storages::clickhouse::io::columns::MismatchedEndiannessUuidColumn:

Public Types
using	cpp_type = boost::uuids::uuid
using	container_type = std::vector< cpp_type >
Public Types inherited from storages::clickhouse::io::columns::ClickhouseColumn< MismatchedEndiannessUuidColumn >
using	iterator = ColumnIterator< MismatchedEndiannessUuidColumn >

Public Member Functions
	MismatchedEndiannessUuidColumn (ColumnRef column)
Public Member Functions inherited from storages::clickhouse::io::columns::ClickhouseColumn< MismatchedEndiannessUuidColumn >
	ClickhouseColumn (ColumnRef column)
iterator	begin () const
iterator	end () const
size_t	Size () const

Static Public Member Functions
static ColumnRef	Serialize (const container_type &from)

Detailed Description

Legacy broken ClickHouse UUID column representation.

Warning

This implementation is broken in a way that uuids endianness is mismatched: uuid "30eec7b3-0b5c-451e-8976-98f62b4c4448" will be stored as uuid "1e455c0b-b3c7-ee30-4844-4c2bf6987689" in ClickHouse (notice that each of 8 hex bytes group is bytewise reversed).

Requires both writes and reads to be performed via userver to work.

Definition at line 24 of file uuid_column.hpp.

Member Typedef Documentation

container_type

using storages::clickhouse::io::columns::MismatchedEndiannessUuidColumn::container_type = std::vector<cpp_type>

Definition at line 28 of file uuid_column.hpp.

cpp_type

using storages::clickhouse::io::columns::MismatchedEndiannessUuidColumn::cpp_type = boost::uuids::uuid

Definition at line 27 of file uuid_column.hpp.

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

• userver/storages/clickhouse/io/columns/uuid_column.hpp