#include <tx.h>

Public Member Functions
template<class M >
M::ReadOnlyHandle *	ro (M &m)

template<class M >
M::ReadOnlyHandle *	ro (const std::string &map_name)

	BaseTx (AbstractStore *store_)

	BaseTx (const BaseTx &that)=delete

Public Member Functions inherited from ccf::kv::BaseTx
	BaseTx (AbstractStore *store_)

	BaseTx (const BaseTx &that)=delete

BaseTx &	operator= (BaseTx &&other)=default

virtual	~BaseTx ()

std::optional< ccf::crypto::Sha256Hash >	get_root_at_read_version ()

Additional Inherited Members
Protected Member Functions inherited from ccf::kv::BaseTx
void	retain_change_set (const std::string &map_name, std::unique_ptr< untyped::ChangeSet > &&change_set, const std::shared_ptr< AbstractMap > &abstract_map)

void	retain_handle (const std::string &map_name, std::unique_ptr< AbstractHandle > &&handle)

MapChanges	get_map_and_change_set_by_name (const std::string &map_name, bool track_deletes_on_missing_keys)

std::list< AbstractHandle * >	get_possible_handles (const std::string &map_name)

void	compacted_version_conflict (const std::string &map_name)

template<class THandle >
THandle *	get_handle_by_name (const std::string &map_name, bool track_deletes_on_missing_keys)

Protected Attributes inherited from ccf::kv::BaseTx
std::unique_ptr< PrivateImpl >	pimpl

OrderedChanges	all_changes

std::optional< ccf::crypto::Sha256Hash >	root_at_read_version = std::nullopt

Detailed Description

Used to create read-only handles for accessing a Map.

Acquiring a handle will create the map in the KV if it does not yet exist. The returned handles can view state written by previous transactions, and any additional modifications made in this transaction.

Member Function Documentation

◆ BaseTx() [1/2]

ccf::kv::BaseTx::BaseTx ( AbstractStore * store_ )

◆ BaseTx() [2/2]

ccf::kv::BaseTx::BaseTx ( const BaseTx & that )

delete

◆ ro() [1/2]

template<class M >

M::ReadOnlyHandle * ccf::kv::ReadOnlyTx::ro ( const std::string & map_name )

inline

Get a read-only handle by map name. Map type must be specified as explicit template parameter.

Parameters

map_name Name of map

◆ ro() [2/2]

template<class M >

M::ReadOnlyHandle * ccf::kv::ReadOnlyTx::ro ( M & m )

inline

Get a read-only handle from a map instance.