CShortOccurCache Class Reference

#include <ConcCommon.h>

Classes
struct	CDataReference
	the structure holds a pointer to a vector of occurrences and its size More...

Public Member Functions
void	Clear ()
size_t	AddNewIndexItemNoToCache (const CTokenNo *pStart, const CTokenNo *pEnd)
const CTokenNo *	GetOccurrencesFromCache (const int CacheId, DWORD &Length) const
bool	CouldContainMore () const

Private Attributes
vector< CDataReference >	m_IndexItemNo2Occurrences
	this map contains a relation from index item No to the address of its occurrences More...
vector< CTokenNo >	m_OccurrencesBody
	this vector contains all occurrences for this cache More...

Detailed Description

CShortOccurCache is a structure which holds all found occurrences indexed by an index item No, if the number of occurrences for this index item is not greater than OccurBufferSize. This structure can take an advantage only if there are many corpus periods, otherwise it can even slow the program. But if there are many corpus periods, then having initialized this cache for the first period, the program can read from now on occurrences directly from the memory. CShortOccurCache is used only for one query at a time, so it is cleared in the very beginning of CConcHolder::GetAllHits.

Member Function Documentation

Clear()

void CShortOccurCache::Clear

(

)

References ClearContainer().

Here is the call graph for this function:

AddNewIndexItemNoToCache()

size_t CShortOccurCache::AddNewIndexItemNoToCache	(	const CTokenNo *	pStart,
		const CTokenNo *	pEnd
	)

Referenced by CIndexSetForQueryingStage::AddOccurs().

Here is the caller graph for this function:

GetOccurrencesFromCache()

const CTokenNo * CShortOccurCache::GetOccurrencesFromCache	(	const int	CacheId,
		DWORD &	Length
	)		const

References CShortOccurCache::CDataReference::m_VectorLength, and CShortOccurCache::CDataReference::m_VectorStartOffset.

Referenced by CIndexSetForQueryingStage::AddOccurs().

Here is the caller graph for this function:

CouldContainMore()

bool CShortOccurCache::CouldContainMore

(

)

const

References MaxShortOccurCacheSize.

Referenced by CIndexSetForQueryingStage::AddOccurs().

Here is the caller graph for this function:

Member Data Documentation

m_IndexItemNo2Occurrences

vector<CDataReference> CShortOccurCache::m_IndexItemNo2Occurrences

private

this map contains a relation from index item No to the address of its occurrences

m_OccurrencesBody

vector<CTokenNo> CShortOccurCache::m_OccurrencesBody

private

this vector contains all occurrences for this cache

---

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

• ConcCommon.h
• ConcSession.cpp