db_reader< PATTERN, TOKENIZER, ALLOC > Class Template Reference

Database Reader class, to read the input file. More...

#include <db_reader.h>

List of all members.

Public Types
typedef vat< typename PATTERN::PAT_PROPS, typename PATTERN::MINE_PROPS, ALLOC, std::vector >	VAT
typedef tokenizer< PATTERN, TOKENIZER, ALLOC >	TKNZ
	vat typedef
Public Member Functions
	db_reader (const char *infile_name)
	tokenizer class for this pattern-type, its method parse_next_line() is invoked by db_reader Constructor
	db_reader (const char *infile_name, int mem_size)
	Constructor_for_gigabase.
	~db_reader ()
	destructor
void	open (const char *infile_name)
	Opens the specified input file. This is an alternative to the parameterized constructor.
void	close ()
	Closes the file associated with this class.
bool	is_open ()
	returns whether file associated with this object is open
template<class SM_T>
void	get_length_one (pat_fam< PATTERN > &freq_pats, storage_manager< PATTERN, VAT, ALLOC, SM_T > &vat_hmap, const int &minsup)
	obtain length one frequent patterns in sorted order, and populate vat_db with their vats

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Detailed Description

template<typename PATTERN, typename TOKENIZER, template< typename > class ALLOC>
class db_reader< PATTERN, TOKENIZER, ALLOC >

Database Reader class, to read the input file.

This class reads the database, using the tokenizer class and populate the level-1 VAT.

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Constructor & Destructor Documentation

template<typename PATTERN, typename TOKENIZER, template< typename > class ALLOC>

db_reader< PATTERN, TOKENIZER, ALLOC >::db_reader

(

const char *

infile_name

)

[inline]

tokenizer class for this pattern-type, its method parse_next_line() is invoked by db_reader Constructor

Parameters:

infile_name

Name of the input database (flat) file

template<typename PATTERN, typename TOKENIZER, template< typename > class ALLOC>

db_reader< PATTERN, TOKENIZER, ALLOC >::db_reader	(	const char *	infile_name,
		int	mem_size
	)			[inline]

Constructor_for_gigabase.

Parameters:

	infile_name	Name of the input database (flat) file.
	mem_size	Maximum size of memory vat for gigabase backend.

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Member Function Documentation

template<typename PATTERN, typename TOKENIZER, template< typename > class ALLOC>

void db_reader< PATTERN, TOKENIZER, ALLOC >::close

(

)

[inline]

Closes the file associated with this class.

void close()

template<typename PATTERN, typename TOKENIZER, template< typename > class ALLOC>

template<class SM_T>

void db_reader< PATTERN, TOKENIZER, ALLOC >::get_length_one	(	pat_fam< PATTERN > &	freq_pats,
		storage_manager< PATTERN, VAT, ALLOC, SM_T > &	vat_hmap,
		const int &	minsup
	)			[inline]

obtain length one frequent patterns in sorted order, and populate vat_db with their vats

void get_length_one(pat_fam<PATTERN>& freq_pats, vat_db<PATTERN, VAT,0>& vat_hmap, int minsup)

Parameters:

	freq_pats	Pattern Family which is populated with the frequent patterns
	vat_hmap	The hashmap used to store pattern-to-VAT mappings
	minsup	Minimum support threshold

template<typename PATTERN, typename TOKENIZER, template< typename > class ALLOC>

bool db_reader< PATTERN, TOKENIZER, ALLOC >::is_open

(

)

[inline]

returns whether file associated with this object is open

bool is_open

template<typename PATTERN, typename TOKENIZER, template< typename > class ALLOC>

void db_reader< PATTERN, TOKENIZER, ALLOC >::open

(

const char *

infile_name

)

[inline]

Opens the specified input file. This is an alternative to the parameterized constructor.

Parameters:

infile_name

Name of the input file

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

• db_reader.h

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