c-treeDB API for C++ - Developers Guide

CTBase::SetTransactionMode

Declaration

void CTBase::SetTransactionMode(CTBEGIN_MODE mode)

Description

c-tree Plus offers a rich array of data integrity options. Full transaction processing offers the safest and best performance of all the available options. There are times when other c-tree Plus options, such as PREIMG, might be advantageous.

Sets the transaction mode used when starting a transaction.

mode is one of the following values:

CTBEGIN_MODE Symbolic Constant	Description
CTBEGIN_NONE	No begin transaction mode set. Default mode apply.
CTBEGIN_PREIMG	Transaction atomicity only. Auto-recovery is not available. Mutually exclusive with CTBEGIN_TRNLOG.
CTBEGIN_TRNLOG	Full transaction processing functionality including auto-recovery. Mutually exclusive to CTBEGIN_PREIMG. This is the default begin transaction mode.
CTBEGIN_DEFER	Defer begin transaction until update.
CTBEGIN_AUTOSAVE	Automatically invokes savepoints after each successful record or resource update.

This mode will be OR-ed in to form the transaction mode used when a c-tree transaction is started. If the transaction mode is CTBEGIN_NONE, the ctTRNLOG mode is used to start a new transaction.

Return Values

None.