bb::lmdblib::LMDBReadTransaction Class Reference

#include <lmdb_read_transaction.hpp>

Inheritance diagram for bb::lmdblib::LMDBReadTransaction:

Public Types
using	Ptr = std::unique_ptr< LMDBReadTransaction >
using	SharedPtr = std::shared_ptr< LMDBReadTransaction >

Public Member Functions
	LMDBReadTransaction (LMDBEnvironment::SharedPtr env)
	LMDBReadTransaction (const LMDBReadTransaction &other)=delete
	LMDBReadTransaction (LMDBReadTransaction &&other)=delete
LMDBReadTransaction &	operator= (const LMDBReadTransaction &other)=delete
LMDBReadTransaction &	operator= (LMDBReadTransaction &&other)=delete
	~LMDBReadTransaction () override
Public Member Functions inherited from bb::lmdblib::LMDBTransaction
	LMDBTransaction (LMDBEnvironment::SharedPtr env, bool readOnly=false)
	LMDBTransaction (const LMDBTransaction &other)=delete
	LMDBTransaction (LMDBTransaction &&other)=delete
LMDBTransaction &	operator= (const LMDBTransaction &other)=delete
LMDBTransaction &	operator= (LMDBTransaction &&other)=delete
virtual	~LMDBTransaction ()=0
MDB_txn *	underlying () const
uint64_t	id () const
virtual void	abort ()
template<typename T , typename K >
bool	get_value_or_previous (T &key, K &data, const LMDBDatabase &db, const std::function< bool(const MDB_val &)> &is_valid) const
template<typename T , typename K >
bool	get_value_or_previous (T &key, K &data, const LMDBDatabase &db) const
template<typename T , typename K >
bool	get_value_or_greater (T &key, K &data, const LMDBDatabase &db) const
template<typename T >
bool	get_value (T &key, std::vector< uint8_t > &data, const LMDBDatabase &db) const
template<typename T >
bool	get_value (T &key, uint64_t &data, const LMDBDatabase &db) const
template<typename T >
void	get_all_values_greater_or_equal_key (const T &key, std::vector< std::vector< uint8_t > > &data, const LMDBDatabase &db) const
template<typename T >
void	get_all_values_lesser_or_equal_key (const T &key, std::vector< std::vector< uint8_t > > &data, const LMDBDatabase &db) const
bool	get_value (std::vector< uint8_t > &key, std::vector< uint8_t > &data, const LMDBDatabase &db) const
bool	get_value (std::vector< uint8_t > &key, uint64_t &data, const LMDBDatabase &db) const

Additional Inherited Members
Protected Attributes inherited from bb::lmdblib::LMDBTransaction
std::shared_ptr< LMDBEnvironment >	_environment
uint64_t	_id
MDB_txn *	_transaction
TransactionState	state

Detailed Description

RAII wrapper around a read transaction. Contains various methods for retrieving values by their keys. Aborts the transaction upon object destruction.

Definition at line 22 of file lmdb_read_transaction.hpp.

Member Typedef Documentation

Ptr

using bb::lmdblib::LMDBReadTransaction::Ptr = std::unique_ptr<LMDBReadTransaction>

Definition at line 24 of file lmdb_read_transaction.hpp.

SharedPtr

using bb::lmdblib::LMDBReadTransaction::SharedPtr = std::shared_ptr<LMDBReadTransaction>

Definition at line 25 of file lmdb_read_transaction.hpp.

Constructor & Destructor Documentation

LMDBReadTransaction() [1/3]

bb::lmdblib::LMDBReadTransaction::LMDBReadTransaction

(

LMDBEnvironment::SharedPtr

env

)

Definition at line 7 of file lmdb_read_transaction.cpp.

LMDBReadTransaction() [2/3]

bb::lmdblib::LMDBReadTransaction::LMDBReadTransaction ( const LMDBReadTransaction &  other )

delete

LMDBReadTransaction() [3/3]

bb::lmdblib::LMDBReadTransaction::LMDBReadTransaction ( LMDBReadTransaction &&  other )

delete

~LMDBReadTransaction()

bb::lmdblib::LMDBReadTransaction::~LMDBReadTransaction ( )

override

Definition at line 11 of file lmdb_read_transaction.cpp.

Member Function Documentation

operator=() [1/2]

LMDBReadTransaction & bb::lmdblib::LMDBReadTransaction::operator= ( const LMDBReadTransaction &  other )

delete

operator=() [2/2]

LMDBReadTransaction & bb::lmdblib::LMDBReadTransaction::operator= ( LMDBReadTransaction &&  other )

delete

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

• src/barretenberg/lmdblib/lmdb_read_transaction.hpp
• src/barretenberg/lmdblib/lmdb_read_transaction.cpp