Celartem::DjVu::StorageWithRollbackLocator Class Reference

#include <djv_storagelocator.h>

Inheritance diagram for Celartem::DjVu::StorageWithRollbackLocator:

Public Member Functions
virtual AutoPtr< Storage >	locateStorage (const String &inName)=0
virtual void	commit ()=0
Public Member Functions inherited from Celartem::Referable
	Referable ()
void	addRef () const
void	releaseRef () const
size_t	getReferenceCount () const

Static Public Member Functions
static AutoPtr < StorageWithRollbackLocator >	create (const String &inIndexFileName)
Static Public Member Functions inherited from Celartem::DjVu::StorageLocator
static AutoPtr< StorageLocator >	create (const String &inIndexFileName)
Static Public Member Functions inherited from Celartem::Referable
static void	dumpDbgAllRefCount ()

Detailed Description

This class is used when locating indirect files. Unlike StorageLocator, this class provides a way to rollback in case the indirect DjVu file creation failed.
Without calling commit method before the destruction of the instance, all the modifications to the storage files are rollbacked.

Member Function Documentation

virtual void Celartem::DjVu::StorageWithRollbackLocator::commit ( )

pure virtual

This method commits the changes to all the files and removes internally used temporary files.
Without calling this method, all the changes are rollbacked.

static AutoPtr<StorageWithRollbackLocator> Celartem::DjVu::StorageWithRollbackLocator::create ( const String &  inIndexFileName )

static

This function creates a new StorageWithRollbackLocator instance.

Parameters

inIndexFileName

The name of the index file. All the indirect files are placed on the same folder to the file.

virtual AutoPtr<Storage> Celartem::DjVu::StorageWithRollbackLocator::locateStorage ( const String &  inName )

pure virtual

This method creates a writable Storage instance from the specified indirect file name.

Parameters

inName

The name of the DjVu indirect file.

Returns

Pointer to the Storage instance corresponding to the name.

Implements Celartem::DjVu::StorageLocator.

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

• djv_storagelocator.h