IndexSetForQueryingStage.cpp File Reference

#include "StdConc.h"
#include "IndexSetForQueryingStage.h"
#include "ConcordAlgorithm.h"
#include "StringIndexator.h"
#include <fcntl.h>

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Functions

• void DearchiveOccurrences (const DWORD *in_start, const DWORD *in_end, DWORD *out_start, DWORD &OutCount, bool bEnabled)
• void ReadOccurrences (FILE *OccursFp, CTokenNo *OutBuffer, file_off_t FilePosition, size_t Count)
• void CompressOccurrences (const vector< DWORD > &In, vector< DWORD > &Out, bool bEnabled)
• void CompressPortion (vector< DWORD > &Archive, const vector< DWORD > &Body, DWORD Start, DWORD End, bool bArchiveOccurrences)

Variables

• const size_t MaxCompressRatio = 5
• size_t AllBytesRead = 0
• const DWORD OccurBufferSize = 512

  the size of the buffer, which is used to read occurrences from the disk
  

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Function Documentation

void DearchiveOccurrences	(	const DWORD *	in_start,
		const DWORD *	in_end,
		DWORD *	out_start,
		DWORD &	OutCount,
		bool	bEnabled
	)

References DeconvertFromVariableInteger().

Referenced by CIndexSetForQueryingStage::AddOccurs().

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void ReadOccurrences	(	FILE *	OccursFp,
		CTokenNo *	OutBuffer,
		file_off_t	FilePosition,
		size_t	Count
	)

References AllBytesRead, errReadOccurrenceFile, Format(), and FSeek().

Referenced by CIndexSetForQueryingStage::AddOccurs().

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void CompressOccurrences	(	const vector< DWORD > &	In,
		vector< DWORD > &	Out,
		bool	bEnabled
	)

References ConvertToVariableInteger().

Referenced by CompressPortion().

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void CompressPortion	(	vector< DWORD > &	Archive,
		const vector< DWORD > &	Body,
		DWORD	Start,
		DWORD	End,
		bool	bArchiveOccurrences
	)

References CompressOccurrences().

Referenced by CIndexSetForQueryingStage::BuildPeriodsDivisionAndCompress().

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Variable Documentation

const size_t MaxCompressRatio = 5

Referenced by CIndexSetForQueryingStage::AddOccurs().

size_t AllBytesRead = 0

Referenced by ReadOccurrences().

const DWORD OccurBufferSize = 512

the size of the buffer, which is used to read occurrences from the disk

Referenced by CIndexSetForQueryingStage::AddOccurs(), and CIndexSetForQueryingStage::BuildPeriodsDivisionAndCompress().