DVInstanceCache Class Reference

A class to handle an instance cache (list of items). More...

Classes
struct	ItemStruct
	Internal structure defining the list items. More...

Public Member Functions
	DVInstanceCache ()
	Constructor.
virtual	~DVInstanceCache ()
	Destructor.
void	clear ()
	reset all member variables to initial state. More...
OFBool	empty () const
	checks whether instance cache is empty More...
Uint32	getCount () const
	gets number of cache entries More...
OFBool	gotoItem (Uint32 idx)
	sets internal cursor to specified position in cache list More...
OFBool	gotoFirst ()
	sets internal cursor to first position in cache list More...
OFBool	gotoNext ()
	sets internal cursor to next position in cache list More...
OFBool	reset ()
	sets internal cursor to last visited position in cache list More...
OFBool	isElem (const OFString &uid)
	checks whether an item with the specified UID exists in the cache list More...
int	getPos () const
	gets the file position of the current (selected) instance More...
DVIFhierarchyStatus	getStatus () const
	gets review status of the current (selected) instance More...
DVPSInstanceType	getType () const
	gets type of the instance More...
int	getImageSize () const
	gets image size of current (selected) instance More...
const char *	getFilename () const
	gets filename of current (selected) instance More...
ItemStruct *	getItem () const
	gets reference to current (selected) instance More...
void	addItem (const OFString &uid, const int pos, const DVIFhierarchyStatus status, const DVPSInstanceType type, const int size, const OFString &filename)
	adds a new item to the cache list. More...
DVIFhierarchyStatus	updateStatus ()
	updates hierarchical/review status for all list items. More...

Protected Member Functions
	OFListIterator (ItemStruct *) Iterator
	internal cursor to current (selected) list item
	OFListIterator (ItemStruct *) OldIterator
	last visited position in item list

Protected Attributes
OFList< ItemStruct * >	List
	list of instances

Detailed Description

A class to handle an instance cache (list of items).

This is the lowest level in the hierarchical cache structure. Images are handled as well as presentation states. This class is used by DVSeriesCache.

Member Function Documentation

addItem()

void DVInstanceCache::addItem ( const OFString &  uid, const int  pos, const DVIFhierarchyStatus  status, const DVPSInstanceType  type, const int  size, const OFString &  filename  )

inline

adds a new item to the cache list.

sets internal cursor to new position.

Parameters

uid	unique identifier
pos	file position in index file
status	review status
type	type of instance
size	image size (in bytes)
filename	filename of instance

clear()

void DVInstanceCache::clear ( )

inline

reset all member variables to initial state.

delete all list items.

empty()

OFBool DVInstanceCache::empty ( void  ) const

inline

checks whether instance cache is empty

Returns

OFTrue if cache is empty, OFFalse otherwise

getCount()

Uint32 DVInstanceCache::getCount ( ) const

inline

gets number of cache entries

Returns

number of cache entries

getFilename()

const char* DVInstanceCache::getFilename ( ) const

inline

gets filename of current (selected) instance

Returns

filename if successful, NULL otherwise

References OFString::c_str(), and DVInstanceCache::ItemStruct::Filename.

getImageSize()

int DVInstanceCache::getImageSize ( ) const

inline

gets image size of current (selected) instance

Returns

image size in bytes if successful, 0 otherwise

References DVInstanceCache::ItemStruct::ImageSize.

getItem()

ItemStruct* DVInstanceCache::getItem ( ) const

inline

gets reference to current (selected) instance

Returns

pointer to ItemStruct if successful, NULL otherwise

getPos()

int DVInstanceCache::getPos ( ) const

inline

gets the file position of the current (selected) instance

Returns

file position if successful, 0 otherwise

References DVInstanceCache::ItemStruct::Pos.

getStatus()

DVIFhierarchyStatus DVInstanceCache::getStatus ( ) const

inline

gets review status of the current (selected) instance

Returns

hierarchical status code if successful, 'isNew' otherwise

References DVInstanceCache::ItemStruct::Status.

getType()

DVPSInstanceType DVInstanceCache::getType ( ) const

inline

gets type of the instance

Returns

type of instance

References DVInstanceCache::ItemStruct::Type.

gotoFirst()

OFBool DVInstanceCache::gotoFirst ( )

inline

sets internal cursor to first position in cache list

Returns

OFTrue if successful, OFFalse if list is empty

gotoItem()

OFBool DVInstanceCache::gotoItem ( Uint32  idx )

inline

sets internal cursor to specified position in cache list

Parameters

idx	index position in cache list (starting with 0)

Returns

OFTrue if successful, OFFalse if 'idx' is invalid

gotoNext()

OFBool DVInstanceCache::gotoNext ( )

inline

sets internal cursor to next position in cache list

Returns

OFTrue if successful, OFFalse if new position is invalid

isElem()

OFBool DVInstanceCache::isElem ( const OFString &  uid )

inline

checks whether an item with the specified UID exists in the cache list

Parameters

uid	UID which should be checked

Returns

OFTrue if such an item exists, OFFalse otherwise

reset()

OFBool DVInstanceCache::reset ( )

inline

sets internal cursor to last visited position in cache list

Returns

OFTrue if successful, OFFalse if last visited position was invalid or the last one in the list

updateStatus()

DVIFhierarchyStatus DVInstanceCache::updateStatus ( )

inline

updates hierarchical/review status for all list items.

Returns

resulting review status (summary of all items)

References DVInstanceCache::ItemStruct::Status.

Referenced by DVSeriesCache::updateStatus().

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

• dcmpstat/include/dcmtk/dcmpstat/dvcache.h