PhraseHunter::SearchEngine Class Reference

Class that provides functionality for querying a corpus. More...

#include <searchengine.h>

Collaboration diagram for PhraseHunter::SearchEngine:

[legend]List of all members.

Public Member Functions
	SearchEngine (SQLitePP::SqliteDB &sqlite)
	Constructor. Should not be called directly. Instead, use CorpusManager::searchEngine().
	~SearchEngine ()
TokenPtr	searchToken (schma::UnicodePtr stringtoken) const
	Search for a single-word Token. For phrases, use searchPhrase().
TokenPtr	searchPhrase (schma::UnicodePtr search_string) const
	Search for a Phrase.
TokenVector	searchRegexToken (schma::UnicodePtr re) const
	Search for all tokens that match a regular expression.
TokenVector	searchPhrasalRegex (schma::UnicodePtr re) const
	Search for all Phrase tokens, where each word matches the respective regex.
Private Member Functions
template<typename _RandomAccessIt, typename _MinChooser, typename _Merger, typename _Validator>
_RandomAccessIt::value_type	combine (_RandomAccessIt begin, _RandomAccessIt end, _MinChooser better, _Merger merge, _Validator valid) const
std::string	cutRegex (const std::string &re) const
Private Attributes
SQLitePP::SqliteDB &	m_db
const std::string	SPECIAL_CHARACTERS

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Detailed Description

Class that provides functionality for querying a corpus.

Definition at line 36 of file searchengine.h.

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Constructor & Destructor Documentation

PhraseHunter::SearchEngine::SearchEngine

(

SQLitePP::SqliteDB &

sqlite

)

Constructor. Should not be called directly. Instead, use CorpusManager::searchEngine().

Definition at line 33 of file searchengine.cpp.

PhraseHunter::SearchEngine::~SearchEngine

(

)

[inline]

Definition at line 42 of file searchengine.h.

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Member Function Documentation

TokenPtr PhraseHunter::SearchEngine::searchToken

(

schma::UnicodePtr

stringtoken

)

const

Search for a single-word Token. For phrases, use searchPhrase().

Definition at line 138 of file searchengine.cpp.

References SQLitePP::SqliteDB::cachedStatement(), SQLitePP::ResultIterator::get(), SQLitePP::ResultIterator::hasMoreRows(), PhraseHunter::EmptyToken::instance(), PhraseHunter::CorpusToken::loadFromCorpus(), and m_db.

Referenced by PhraseHunter::StatisticsEngine::mutual_information(), SearchTab::search(), searchPhrase(), and searchRegexToken().

TokenPtr PhraseHunter::SearchEngine::searchPhrase

(

schma::UnicodePtr

search_string

)

const

Search for a Phrase.

Definition at line 173 of file searchengine.cpp.

References combine(), PhraseHunter::Tokenizer::hasMoreTokens(), PhraseHunter::EmptyToken::instance(), PhraseHunter::Tokenizer::nextUnencodedToken(), searchToken(), and schma::toStdString().

Referenced by PhraseHunter::StatisticsEngine::mutual_information(), SearchTab::search(), and time_serge().

TokenVector PhraseHunter::SearchEngine::searchRegexToken

(

schma::UnicodePtr

re

)

const

Search for all tokens that match a regular expression.

Parameters:

re

The regular expression to match.

Definition at line 37 of file searchengine.cpp.

References cutRegex(), m_db, searchToken(), SQLitePP::SqliteDB::statement(), and schma::toStdString().

Referenced by SearchTab::search(), and searchPhrasalRegex().

TokenVector PhraseHunter::SearchEngine::searchPhrasalRegex

(

schma::UnicodePtr

re

)

const

Search for all Phrase tokens, where each word matches the respective regex.

Parameters:

re

The phrasal regular expression.

Definition at line 96 of file searchengine.cpp.

References combine(), searchRegexToken(), schma::splitString(), and schma::toStdString().

Referenced by SearchTab::search(), and time_serge().

template<typename _RandomAccessIt, typename _MinChooser, typename _Merger, typename _Validator>

_RandomAccessIt::value_type PhraseHunter::SearchEngine::combine	(	_RandomAccessIt	begin,
		_RandomAccessIt	end,
		_MinChooser	better,
		_Merger	merge,
		_Validator	valid
	)			const [private]

Definition at line 201 of file searchengine.cpp.

Referenced by searchPhrasalRegex(), and searchPhrase().

std::string PhraseHunter::SearchEngine::cutRegex

(

const std::string &

re

)

const [private]

Definition at line 122 of file searchengine.cpp.

References SPECIAL_CHARACTERS.

Referenced by searchRegexToken().

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Member Data Documentation

SQLitePP::SqliteDB& PhraseHunter::SearchEngine::m_db [private]

Definition at line 73 of file searchengine.h.

Referenced by searchRegexToken(), and searchToken().

const std::string PhraseHunter::SearchEngine::SPECIAL_CHARACTERS [private]

Definition at line 74 of file searchengine.h.

Referenced by cutRegex().

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

• phrasehunter/include/phrasehunter/searchengine.h
• phrasehunter/lib/searchengine.cpp

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