DcmHashDict Class Reference

a hash table of pointers to DcmDictEntry objects More...

Collaboration diagram for DcmHashDict:

Public Member Functions
	DcmHashDict (int hashTabLen=DCMHASHDICT_DEFAULT_HASHSIZE)
	constructor More...
	~DcmHashDict ()
	destructor
int	size () const
	counts total number of entries
void	clear ()
	clears the hash table of all entries
void	put (DcmDictEntry *e)
	inserts an entry into hash table (deletes old entry if present) More...
const DcmDictEntry *	get (const DcmTagKey &key, const char *privCreator) const
	hash table lookup for the given tag key and private creator name. More...
void	del (const DcmTagKey &k, const char *privCreator)
	deletes the entry for the given tag and private creator More...
DcmHashDictIterator	begin () const
	returns iterator to start of hash table
DcmHashDictIterator	end () const
	returns iterator to end of hash table
STD_NAMESPACE ostream &	loadSummary (STD_NAMESPACE ostream &out)
	prints some information about hash table bucket utilization

Private Member Functions
	DcmHashDict (const DcmHashDict &)
	private unimplemented copy constructor
DcmHashDict &	operator= (const DcmHashDict &)
	private unimplemented copy assignment operator
void	_init (int hashSize)
	performs initialization for given hash table size, called from constructor
int	hash (const DcmTagKey *k) const
	compute hash value for given tag key More...
DcmDictEntry *	insertInList (DcmDictEntryList &lst, DcmDictEntry *e)
	inserts new entry into given list More...
DcmDictEntry *	removeInList (DcmDictEntryList &lst, const DcmTagKey &k, const char *privCreator)
	removes the entry for the given tag and private creator More...
DcmDictEntry *	findInList (DcmDictEntryList &lst, const DcmTagKey &k, const char *privCreator) const
	searcjes entry for the given tag and private creator More...

Private Attributes
DcmDictEntryList **	hashTab
	array of (hash table size) pointers to DcmDictEntryList elements implementing the different buckets of the hash table
int	hashTabLength
	number of buckets in hash table
int	lowestBucket
	index of lowest bucket for which the DcmDictEntryList has been initialized
int	highestBucket
	index of highest bucket for which the DcmDictEntryList has been initialized
int	entryCount
	number of entries in hash table

Friends
class	DcmHashDictIterator

Detailed Description

a hash table of pointers to DcmDictEntry objects

Definition at line 208 of file dchashdi.h.

Constructor & Destructor Documentation

DcmHashDict::DcmHashDict ( int  hashTabLen = DCMHASHDICT_DEFAULT_HASHSIZE)

inline

constructor

Parameters

hashTabLen

number of buckets in hash table

Definition at line 215 of file dchashdi.h.

References _init().

Member Function Documentation

void DcmHashDict::del	(	const DcmTagKey &	k,
		const char *	privCreator
	)

deletes the entry for the given tag and private creator

Parameters

k	tag key
privCreator	private creator name, may be NULL

DcmDictEntry* DcmHashDict::findInList ( DcmDictEntryList &  lst, const DcmTagKey &  k, const char *  privCreator  ) const

private

searcjes entry for the given tag and private creator

Parameters

lst	list to search in
k	tag key
privCreator	private creator name, may be NULL

Returns

pointer to found element, NULL if not found

const DcmDictEntry* DcmHashDict::get	(	const DcmTagKey &	key,
		const char *	privCreator
	)		const

hash table lookup for the given tag key and private creator name.

Parameters

key	tag key
privCreator	private creator name, may be NULL

int DcmHashDict::hash ( const DcmTagKey *  k) const

private

compute hash value for given tag key

Parameters

k	pointer to tag key

Returns

hash value

DcmDictEntry* DcmHashDict::insertInList ( DcmDictEntryList &  lst, DcmDictEntry *  e  )

private

inserts new entry into given list

Parameters

lst	list to add to
e	new element to add, will be deleted upon destruction of the hash table

Returns

pointer to replaced element, if any

void DcmHashDict::put

(

DcmDictEntry *

e)

inserts an entry into hash table (deletes old entry if present)

Parameters

e	pointer to new entry

DcmDictEntry* DcmHashDict::removeInList ( DcmDictEntryList &  lst, const DcmTagKey &  k, const char *  privCreator  )

private

removes the entry for the given tag and private creator

Parameters

lst	list to remove from
k	tag key
privCreator	private creator name, may be NULL

Returns

pointer to removed element, if any

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

• dcmdata/include/dcmtk/dcmdata/dchashdi.h