IOGRTransactionBehaviour Class Reference

IOGRTransactionBehaviour is an interface that a driver must implement to provide emulation of transactions. More...

#include <ogremulatedtransaction.h>

Public Member Functions
virtual OGRErr	StartTransaction (OGRDataSource *&poDSInOut, int &bOutHasReopenedDS)=0
	Start a transaction. More...
virtual OGRErr	CommitTransaction (OGRDataSource *&poDSInOut, int &bOutHasReopenedDS)=0
	Commit a transaction. More...
virtual OGRErr	RollbackTransaction (OGRDataSource *&poDSInOut, int &bOutHasReopenedDS)=0
	Rollback a transaction. More...

Detailed Description

IOGRTransactionBehaviour is an interface that a driver must implement to provide emulation of transactions.

Since

GDAL 2.0

Member Function Documentation

CommitTransaction()

virtual OGRErr IOGRTransactionBehaviour::CommitTransaction ( OGRDataSource *&  poDSInOut, int &  bOutHasReopenedDS  )

pure virtual

Commit a transaction.

The implementation may update the poDSInOut reference by closing and reopening the datasource (or assigning it to NULL in case of error). In which case bOutHasReopenedDS must be set to TRUE.

The implementation can for example remove the backup it may have done at StartTransaction() time.

Parameters

poDSInOut	datasource handle that may be modified
bOutHasReopenedDS	output boolean to indicate if datasource has been closed

Returns

OGRERR_NONE in case of success

RollbackTransaction()

virtual OGRErr IOGRTransactionBehaviour::RollbackTransaction ( OGRDataSource *&  poDSInOut, int &  bOutHasReopenedDS  )

pure virtual

Rollback a transaction.

The implementation may update the poDSInOut reference by closing and reopening the datasource (or assigning it to NULL in case of error). In which case bOutHasReopenedDS must be set to TRUE.

The implementation can for example restore the backup it may have done at StartTransaction() time.

Parameters

poDSInOut	datasource handle that may be modified
bOutHasReopenedDS	output boolean to indicate if datasource has been closed

Returns

OGRERR_NONE in case of success

StartTransaction()

virtual OGRErr IOGRTransactionBehaviour::StartTransaction ( OGRDataSource *&  poDSInOut, int &  bOutHasReopenedDS  )

pure virtual

Start a transaction.

The implementation may update the poDSInOut reference by closing and reopening the datasource (or assigning it to NULL in case of error). In which case bOutHasReopenedDS must be set to TRUE.

The implementation can for example backup the existing files/directories that compose the current datasource.

Parameters

poDSInOut	datasource handle that may be modified
bOutHasReopenedDS	output boolean to indicate if datasource has been closed

Returns

OGRERR_NONE in case of success

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

• ogremulatedtransaction.h
• ogremulatedtransaction.cpp