#include <NCollection_DataMap.hxx>

Inheritance diagram for NCollection_DataMap< TheKeyType, TheItemType, Hasher >:

Data Structures
class	DataMapNode

class	Iterator

Public Types
typedef NCollection_StlIterator< std::forward_iterator_tag, Iterator, TheItemType, false >	iterator
	Shorthand for a regular iterator type. More...

typedef NCollection_StlIterator< std::forward_iterator_tag, Iterator, TheItemType, true >	const_iterator
	Shorthand for a constant iterator type. More...

Public Member Functions
iterator	begin () const
	Returns an iterator pointing to the first element in the map. More...

iterator	end () const
	Returns an iterator referring to the past-the-end element in the map. More...

const_iterator	cbegin () const
	Returns a const iterator pointing to the first element in the map. More...

const_iterator	cend () const
	Returns a const iterator referring to the past-the-end element in the map. More...

	NCollection_DataMap (const Standard_Integer NbBuckets=1, const Handle< NCollection_BaseAllocator > &theAllocator=0L)
	Constructor. More...

	NCollection_DataMap (const NCollection_DataMap &theOther)
	Copy constructor. More...

void	Exchange (NCollection_DataMap &theOther)
	Exchange the content of two maps without re-allocations. Notice that allocators will be swapped as well! More...

NCollection_DataMap &	Assign (const NCollection_DataMap &theOther)
	Assignment. This method does not change the internal allocator. More...

NCollection_DataMap &	operator= (const NCollection_DataMap &theOther)
	Assignment operator. More...

void	ReSize (const Standard_Integer N)
	ReSize. More...

Standard_Boolean	Bind (const TheKeyType &theKey, const TheItemType &theItem)
	Bind binds Item to Key in map. Returns Standard_True if Key was not exist in the map. If the Key was already bound, the Item will be rebinded and Standard_False will be returned. More...

TheItemType *	Bound (const TheKeyType &theKey, const TheItemType &theItem)
	Bound binds Item to Key in map. Returns modifiable Item. More...

Standard_Boolean	IsBound (const TheKeyType &theKey) const
	IsBound. More...

Standard_Boolean	UnBind (const TheKeyType &theKey)
	UnBind removes Item Key pair from map. More...

const TheItemType *	Seek (const TheKeyType &theKey) const
	Seek returns pointer to Item by Key. Returns NULL is Key was not bound. More...

const TheItemType &	Find (const TheKeyType &theKey) const
	Find returns the Item for Key. Raises if Key was not bound. More...

Standard_Boolean	Find (const TheKeyType &theKey, TheItemType &theValue) const
	Find Item for key with copying. More...

const TheItemType &	operator() (const TheKeyType &theKey) const
	operator () More...

TheItemType *	ChangeSeek (const TheKeyType &theKey)
	ChangeSeek returns modifiable pointer to Item by Key. Returns NULL is Key was not bound. More...

TheItemType &	ChangeFind (const TheKeyType &theKey)
	ChangeFind returns mofifiable Item by Key. Raises if Key was not bound. More...

TheItemType &	operator() (const TheKeyType &theKey)
	operator () More...

void	Clear (const Standard_Boolean doReleaseMemory=Standard_True)
	Clear data. If doReleaseMemory is false then the table of buckets is not released and will be reused. More...

void	Clear (const Handle< NCollection_BaseAllocator > &theAllocator)
	Clear data and reset allocator. More...

virtual	~NCollection_DataMap (void)
	Destructor. More...

Standard_Integer	Size (void) const
	Size. More...

Public Member Functions inherited from NCollection_BaseMap
Standard_Integer	NbBuckets () const
	NbBuckets. More...

Standard_Integer	Extent () const
	Extent. More...

Standard_Boolean	IsEmpty () const
	IsEmpty. More...

void	Statistics (Standard_OStream &S) const
	Statistics. More...

const Handle< NCollection_BaseAllocator > &	Allocator () const
	Returns attached allocator. More...

Protected Member Functions
Standard_Boolean	lookup (const TheKeyType &theKey, DataMapNode *&thepNode) const
	Lookup for particular key in map. Returns true if key is found and thepNode points to binded node. Returns false if key is not found, thehNode value is this case is not usable. More...

Protected Member Functions inherited from NCollection_BaseMap
	NCollection_BaseMap (const Standard_Integer NbBuckets, const Standard_Boolean single, const Handle< NCollection_BaseAllocator > &theAllocator)
	Constructor. More...

virtual	~NCollection_BaseMap ()
	Destructor. More...

Standard_Boolean	BeginResize (const Standard_Integer NbBuckets, Standard_Integer &NewBuckets, NCollection_ListNode &data1, NCollection_ListNode &data2) const
	BeginResize. More...

void	EndResize (const Standard_Integer NbBuckets, const Standard_Integer NewBuckets, NCollection_ListNode data1, NCollection_ListNode data2)
	EndResize. More...

Standard_Boolean	Resizable () const
	Resizable. More...

void	Increment ()
	Increment. More...

void	Decrement ()
	Decrement. More...

void	Destroy (NCollection_DelMapNode fDel, Standard_Boolean doReleaseMemory=Standard_True)
	Destroy. More...

Standard_Integer	NextPrimeForMap (const Standard_Integer N) const
	NextPrimeForMap. More...

void	exchangeMapsData (NCollection_BaseMap &theOther)
	Exchange content of two maps without data copying. More...

Additional Inherited Members
Protected Attributes inherited from NCollection_BaseMap
Handle< NCollection_BaseAllocator >	myAllocator

NCollection_ListNode **	myData1

NCollection_ListNode **	myData2

Detailed Description

template<class TheKeyType, class TheItemType, class Hasher = NCollection_DefaultHasher<TheKeyType>>
class NCollection_DataMap< TheKeyType, TheItemType, Hasher >

Purpose: The DataMap is a Map to store keys with associated Items. See Map from NCollection for a discussion about the number of buckets.

The DataMap can be seen as an extended array where the Keys are the indices. For this reason the operator () is defined on DataMap to fetch an Item from a Key. So the following syntax can be used :

anItem = aMap(aKey); aMap(aKey) = anItem;

This analogy has its limit. aMap(aKey) = anItem can be done only if aKey was previously bound to an item in the map.