Implementation of a forward_index. More...

Public Member Functions
	impl (forward_index *idx)
	Constructs an implementation based on a forward_index.

void	load_index ()
	This function loads a disk index from its filesystem representation.

void	create_index (const std::string &config_file)
	This function initializes the forward index. More...

void	init_metadata ()
	Initializes this index's metadata structures.

void	create_libsvm_postings (const cpptoml::table &config)

void	create_libsvm_metadata ()
	Initializes structures based on a libsvm-formatted file.

void	uninvert (const inverted_index &inv_idx)

void	create_uninverted_metadata (const std::string &name)

bool	is_libsvm_format (const cpptoml::table &config) const

void	set_doc_byte_locations ()
	Calculates which documents start at which bytes in the postings file.

void	compressed_postings_to_libsvm (uint64_t num_docs)
	Converts postings.index into a libsvm formatted file. More...

Public Attributes
uint64_t	total_unique_terms_
	the total number of unique terms if term_id_mapping_ is unused

util::optional< util::disk_vector< uint64_t > >	doc_byte_locations_
	doc_id -> postings file byte location

Private Attributes
forward_index *	idx_
	Pointer to the forward_index this is an implementation of.

Detailed Description

Implementation of a forward_index.

Member Function Documentation

void meta::index::forward_index::impl::create_index ( const std::string & config_file )

This function initializes the forward index.

Parameters

config_file The configuration file used to create the index

void meta::index::forward_index::impl::create_libsvm_postings ( const cpptoml::table & config )

Parameters

config the configuration settings for this index

void meta::index::forward_index::impl::uninvert ( const inverted_index & inv_idx )

Parameters

inv_idx The inverted index to uninvert

void meta::index::forward_index::impl::create_uninverted_metadata ( const std::string & name )

Parameters

name	The name of the inverted index to copy data from

bool meta::index::forward_index::impl::is_libsvm_format ( const cpptoml::table & config ) const

Parameters

config the configuration settings for this index

Returns: whether this index will be based off of a single libsvm-formatted corpus file

void meta::index::forward_index::impl::compressed_postings_to_libsvm ( uint64_t num_docs )

Converts postings.index into a libsvm formatted file.

Parameters

num_docs The total number of documents

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