DcmFileCache Class Reference

This class implements a simple container that stores an input stream, the position of that input stream corresponding to the start of a DICOM element value field contained in the stream and the current "owner" object. More...

List of all members.

Public Member Functions
	DcmFileCache ()
	default constructor
	~DcmFileCache ()
	destructor
OFBool	isUser (void *object) const
	checks if the given object is the current user of this cache returns true if so, false otherwise
void	clear ()
	returns object to default constructed state
void	init (DcmInputStream *stream, void *user)
	initializes the file cache with the given stream object and user.
DcmInputStream *	getStream ()
	return input stream
offile_off_t	getOffset () const
	return initial stream offset
Private Member Functions
	DcmFileCache (const DcmFileCache &arg)
	private undefined copy constructor
DcmFileCache &	operator= (const DcmFileCache &arg)
	private undefined copy assignment operator
Private Attributes
DcmInputStream *	stream_
	input stream, may be NULL
offile_off_t	offset_
	offset within stream for initial position
const void *	user_
	object that currently uses the file cache, i.e. has created the stream

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Detailed Description

This class implements a simple container that stores an input stream, the position of that input stream corresponding to the start of a DICOM element value field contained in the stream and the current "owner" object.

It is used to keep a single file handle open during multiple calls to DcmElement::getPartialValue(), thus speeding up the reading.

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Member Function Documentation

void DcmFileCache::init	(	DcmInputStream *	stream,
		void *	user
	)		[inline]

initializes the file cache with the given stream object and user.

Parameters:

stream	stream object
user	user object

OFBool DcmFileCache::isUser

(

void *

object

)

const [inline]

checks if the given object is the current user of this cache returns true if so, false otherwise

Parameters:

object

pointer to "user object"

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

• dcmdata/include/dcmtk/dcmdata/dcfcache.h