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InvIndexMerge Class Reference

#include <InvIndexMerge.hpp>

Inheritance diagram for InvIndexMerge:

List of all members.

Public Methods
	InvIndexMerge (char *buffer, long size, long maxfilesize=2100000000)
	InvIndexMerge (long buffersize=64000000, long maxfilesize=2100000000)
virtual	~InvIndexMerge ()
int	merge (vector< string > *tf, const string &prefix)
void	setMaxFileSize (long size)
char *	setBuffer (char *buffer, long size)
int	hierMerge (vector< string > *files, int level)
virtual int	mergeFiles (vector< string > *files, vector< string > *intmed, int level)
	merge these files and put the results into the intmed list
virtual int	finalMerge (vector< string > *files)
	do the final merge and write the lookup table
Protected Methods
virtual void	writeInvFIDs ()
	write file ids for indexes created
virtual void	least (vector< IndexReader * > *r, vector< TERMID_T > *ret)
	figure out which readers point to the lowest termids
void	setbuf (ifstream *fs, char *bp, int bytes)
	setbuffer for ifstream. trying to keep ugly os specific code out of main code
Protected Attributes
string	name
vector< string >	invfiles
long	maxfile
long	bufsize
char *	readbuffer

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Constructor & Destructor Documentation

InvIndexMerge::InvIndexMerge (  char *    buffer, long    size, long    maxfilesize = 2100000000 )

constructor. vector : a list of files to merge char* : name prefix of created files long : the maximum size the index can be

InvIndexMerge::InvIndexMerge (  long    buffersize = 64000000, long    maxfilesize = 2100000000 )

InvIndexMerge::~InvIndexMerge (    )  [virtual]

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Member Function Documentation

int InvIndexMerge::finalMerge (  vector< string > *    files )  [virtual]

do the final merge and write the lookup table Reimplemented in InvFPIndexMerge.

int InvIndexMerge::hierMerge (  vector< string > *    files, int    level )

recursive hierarchical merge calls mergeFiles() when intermediate files are necessary base case if finalMerge()

void InvIndexMerge::least (  vector< IndexReader * > *    r, vector< TERMID_T > *    ret )  [protected, virtual]

figure out which readers point to the lowest termids

int InvIndexMerge::merge (  vector< string > *    tf, const string &    prefix )

output of this merge operation and the lookup table for the merged index returns the number of index files this merge created

int InvIndexMerge::mergeFiles (  vector< string > *    files, vector< string > *    intmed, int    level )  [virtual]

merge these files and put the results into the intmed list Reimplemented in InvFPIndexMerge.

void InvIndexMerge::setbuf (  ifstream *    fs, char *    bp, int    bytes )  [protected]

setbuffer for ifstream. trying to keep ugly os specific code out of main code

char * InvIndexMerge::setBuffer (  char *    buffer, long    size )

void InvIndexMerge::setMaxFileSize (  long    size )

void InvIndexMerge::writeInvFIDs (    )  [protected, virtual]

write file ids for indexes created

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Member Data Documentation

long InvIndexMerge::bufsize [protected]

vector<string> InvIndexMerge::invfiles [protected]

long InvIndexMerge::maxfile [protected]

string InvIndexMerge::name [protected]

char* InvIndexMerge::readbuffer [protected]

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

• InvIndexMerge.hpp
• InvIndexMerge.cpp

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