FirteX－高性能全文索引和检索平台

API Documentation

firtex::search::CPhraseScorer类参考

#include <PhraseScorer.h>

继承图，类firtex::search::CPhraseScorer


公有成员
	CPhraseScorer (CWeight pWeight, CSimilarity pSimilarity, int slop, CTermPositions *ppPos, int size, CNormBytes norms)
virtual	~CPhraseScorer (void)
count_t	nextDocs ()
count_t	scores (docid_t &docs, score_t &scores)
bool	skipTo (docid_t target, docid_t &nearTarget)
bool	next ()
score_t	score ()
docid_t	doc ()
保护成员
void	firstToLast ()
freq_t	phraseFreq ()
virtual freq_t	exactPhraseFreq ()
virtual freq_t	sloppyPhraseFreq ()
保护属性
CWeight *	m_pWeight
CTermDocs *	m_pTermDocs
score_t	m_fWeights
docid_t	m_docs [PHRASE_PAGESIZE]
freq_t	m_freqs [PHRASE_PAGESIZE]
score_t	m_scores [PHRASE_PAGESIZE]
count_t	m_numDocs
score_t	m_scoreCache [PHRASESCORE_CACHESIZE]
int	m_nSlop
CPhrasePositions *	m_pFirst
CPhrasePositions *	m_pLast
int	m_nNumPositions
CNormBytes *	m_norms

构造及析构函数文档

firtex::search::CPhraseScorer::CPhraseScorer ( CWeight * pWeight,

CSimilarity * pSimilarity,

int slop,

CTermPositions ** ppPos,

int size,

CNormBytes * norms

)

virtual firtex::search::CPhraseScorer::~CPhraseScorer ( void ) [virtual]

成员函数文档

docid_t firtex::search::CPhraseScorer::doc ( ) [virtual]

实现了firtex::search::CScorer。

virtual freq_t firtex::search::CPhraseScorer::exactPhraseFreq ( ) [protected, virtual]

void firtex::search::CPhraseScorer::firstToLast ( ) [inline, protected]

bool firtex::search::CPhraseScorer::next ( ) [virtual]

依次取一个文档进行打分
返回:
返回false表明到达结尾

实现了firtex::search::CScorer。

count_t firtex::search::CPhraseScorer::nextDocs ( ) [virtual]

提取下一批文档
返回:
提取成功返回true，已经提取完毕返回false

实现了firtex::search::CScorer。

freq_t firtex::search::CPhraseScorer::phraseFreq ( ) [protected]

score_t firtex::search::CPhraseScorer::score ( ) [virtual]

实现了firtex::search::CScorer。

count_t firtex::search::CPhraseScorer::scores ( docid_t *& docs,

score_t *& scores

) [virtual]

取文档的打分结果
参数:

docs 存放文档id，docs地址由内部维护

scores 存放文档打分结果，scores地址由内部维护

返回:
打分的文档总数

实现了firtex::search::CScorer。

bool firtex::search::CPhraseScorer::skipTo ( docid_t target,

docid_t & nearTarget

) [virtual]

移动到第一个文档编号大于或等于target的位置，一般配合score()使用
参数:

target 目标文档编号

nearTarget 当搜索成功时nearTarget=target,否则，返回大于target并且与target最接近的doc id, 如果target大于所有值则返回小于target且与target最接近的doc id

返回:
仅当存在这样的文档编号时返回true

实现了firtex::search::CScorer。