LMDBAL::WriteTransaction Class Reference

Public writable transaction. More...

Inheritance diagram for LMDBAL::WriteTransaction:

Public Member Functions
	WriteTransaction ()
	Constructs inactive write transaction.
	WriteTransaction (WriteTransaction &&other)
	Moves transaction to the new object.
	WriteTransaction (const WriteTransaction &other)=delete
WriteTransaction &	operator= (const WriteTransaction &other)=delete
WriteTransaction &	operator= (WriteTransaction &&other)
void	commit ()
	Commits transaction submitting all changes.
void	abort ()
	Aborts transaction cancelling all changes.
Public Member Functions inherited from LMDBAL::Transaction
	Transaction ()
	Constructs inactive transaction.
	Transaction (Transaction &&other)
	Moves transaction to a new object.
	Transaction (const Transaction &other)=delete
Transaction &	operator= (const Transaction &other)=delete
Transaction &	operator= (Transaction &&other)
	Move-assigns transaction to the new object.
virtual	~Transaction ()
	Destroys transaction.
void	terminate ()
	Terminates transaction if it was active.
bool	isActive () const
	Returns transaction states.

Protected Member Functions
	WriteTransaction (TransactionID txn, Base *parent)
	Constructs active write transaction.
Protected Member Functions inherited from LMDBAL::Transaction
	Transaction (TransactionID txn, const Base *parent)
	Constructs an active transaction.
void	reset ()
	Resets inner transaction properties to inactive state.

Friends
class	Base

Additional Inherited Members
Protected Attributes inherited from LMDBAL::Transaction
TransactionID	txn
	Transaction inner handler.
bool	active
	Transaction state.
const Base *	parent
	Pointer to the database this transaction belongs to.

Detailed Description

Public writable transaction.

This class provides writable transactions you can use to speed to your queries and modifications keeping them thread safe. LMDBAL::WriteTransaction is NOT COPYABLE but MOVABLE. Transaction can be in one of two states: active or terminated. The way to receive an active LMDBAL::WriteTransaction is to call LMDBAL::Base::beginTransaction. You can use LMDBAL::WriteTransaction for everything instead of LMDBAL::Transaction

Active transactions become terminated upon the call of LMDBAL::WriteTransaction::abort or LMDBAL::WriteTransaction::commit. Calling LMDBAL::Transaction::terminate on LMDBAL::WriteTransaction is exactly the same as calling LMDBAL::WriteTransaction::abort.

Active transactions automaticaly terminate themselves upon destruction. For LMDBAL::WriteTransaction default behaviour upon destruction is to abort.

You CAN NOT use inactive transactions for any query.

Member Function Documentation

abort()

void LMDBAL::WriteTransaction::abort

(

)

Aborts transaction cancelling all changes.

Transaction becomes terminated after calling this method

commit()

void LMDBAL::WriteTransaction::commit

(

)

Commits transaction submitting all changes.

Transaction becomes terminated after calling this method

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

• /workspace/blue/lmdbal/src/transaction.h
• /workspace/blue/lmdbal/src/transaction.cpp