Lucene::SegmentTermPositions Class Reference

#include <SegmentTermPositions.h>

Inheritance diagram for Lucene::SegmentTermPositions:

Public Member Functions
	SegmentTermPositions (const SegmentReaderPtr &parent)
virtual	~SegmentTermPositions ()
virtual String	getClassName ()
boost::shared_ptr< SegmentTermPositions >	shared_from_this ()
virtual void	seek (const TermInfoPtr &ti, const TermPtr &term)
virtual void	close ()
	Frees associated resources. More...
virtual int32_t	nextPosition ()
	Returns next position in the current document. More...
virtual bool	next ()
	Moves to the next pair in the enumeration. More...
virtual int32_t	read (Collection< int32_t > docs, Collection< int32_t > freqs)
	Not supported. More...
virtual int32_t	getPayloadLength ()
	Returns the length of the payload at the current term position. More...
virtual ByteArray	getPayload (ByteArray data, int32_t offset)
	Returns the payload data at the current term position. More...
virtual bool	isPayloadAvailable ()
	Checks if a payload can be loaded at this position. More...
Public Member Functions inherited from Lucene::SegmentTermDocs
	SegmentTermDocs (const SegmentReaderPtr &parent)
virtual	~SegmentTermDocs ()
boost::shared_ptr< SegmentTermDocs >	shared_from_this ()
virtual void	seek (const TermPtr &term)
	Sets this to the data for a term. More...
virtual void	seek (const TermEnumPtr &termEnum)
	Sets this to the data for the current term in a TermEnum. More...
virtual int32_t	doc ()
	Returns the current document number. More...
virtual int32_t	freq ()
	Returns the frequency of the term within the current document. More...
virtual bool	skipTo (int32_t target)
	Optimized implementation. More...
virtual IndexInputPtr	freqStream ()
	Used for testing. More...
virtual void	freqStream (const IndexInputPtr &freqStream)
Public Member Functions inherited from Lucene::TermPositions
virtual	~TermPositions ()
Public Member Functions inherited from Lucene::LuceneObject
virtual	~LuceneObject ()
virtual void	initialize ()
	Called directly after instantiation to create objects that depend on this object being fully constructed. More...
virtual LuceneObjectPtr	clone (const LuceneObjectPtr &other=LuceneObjectPtr())
	Return clone of this object. More...
virtual int32_t	hashCode ()
	Return hash code for this object. More...
virtual bool	equals (const LuceneObjectPtr &other)
	Return whether two objects are equal. More...
virtual int32_t	compareTo (const LuceneObjectPtr &other)
	Compare two objects. More...
virtual String	toString ()
	Returns a string representation of the object. More...
Public Member Functions inherited from Lucene::LuceneSync
virtual	~LuceneSync ()
virtual SynchronizePtr	getSync ()
	Return this object synchronize lock. More...
virtual LuceneSignalPtr	getSignal ()
	Return this object signal. More...
virtual void	lock (int32_t timeout=0)
	Lock this object using an optional timeout. More...
virtual void	unlock ()
	Unlock this object. More...
virtual bool	holdsLock ()
	Returns true if this object is currently locked by current thread. More...
virtual void	wait (int32_t timeout=0)
	Wait for signal using an optional timeout. More...
virtual void	notifyAll ()
	Notify all threads waiting for signal. More...

Static Public Member Functions
static String	_getClassName ()
Static Public Member Functions inherited from Lucene::SegmentTermDocs
static String	_getClassName ()
Static Public Member Functions inherited from Lucene::TermPositions
static String	_getClassName ()
Static Public Member Functions inherited from Lucene::TermDocs
static String	_getClassName ()

Protected Member Functions
int32_t	readDeltaPosition ()
virtual void	skippingDoc ()
virtual void	skipProx (int64_t proxPointer, int32_t payloadLength)
	Overridden by SegmentTermPositions to skip in prox stream. More...
virtual void	skipPositions (int32_t n)
virtual void	skipPayload ()
virtual void	lazySkip ()
	It is not always necessary to move the prox pointer to a new document after the freq pointer has been moved. Consider for example a phrase query with two terms: the freq pointer for term 1 has to move to document x to answer the question if the term occurs in that document. But only if term 2 also matches document x, the positions have to be read to figure out if term 1 and term 2 appear next to each other in document x and thus satisfy the query. So we move the prox pointer lazily to the document as soon as positions are requested. More...
Protected Member Functions inherited from Lucene::SegmentTermDocs
virtual int32_t	readNoTf (Collection< int32_t > docs, Collection< int32_t > freqs, int32_t length)
Protected Member Functions inherited from Lucene::TermPositions
	TermPositions ()
Protected Member Functions inherited from Lucene::TermDocs
	TermDocs ()
Protected Member Functions inherited from Lucene::LuceneObject
	LuceneObject ()

Protected Attributes
IndexInputPtr	proxStream
int32_t	proxCount
int32_t	position
int32_t	payloadLength
	The current payload length. More...
bool	needToLoadPayload
	Indicates whether the payload of the current position has been read from the proxStream yet. More...
int64_t	lazySkipPointer
int32_t	lazySkipProxCount
Protected Attributes inherited from Lucene::SegmentTermDocs
SegmentReaderWeakPtr	_parent
IndexInputPtr	_freqStream
int32_t	count
int32_t	df
BitVectorPtr	deletedDocs
int32_t	_doc
int32_t	_freq
int32_t	skipInterval
int32_t	maxSkipLevels
DefaultSkipListReaderPtr	skipListReader
int64_t	freqBasePointer
int64_t	proxBasePointer
int64_t	skipPointer
bool	haveSkipped
bool	currentFieldStoresPayloads
bool	currentFieldOmitTermFreqAndPositions
Protected Attributes inherited from Lucene::LuceneSync
SynchronizePtr	objectLock
LuceneSignalPtr	objectSignal

Constructor & Destructor Documentation

Lucene::SegmentTermPositions::SegmentTermPositions

(

const SegmentReaderPtr &

parent

)

virtual Lucene::SegmentTermPositions::~SegmentTermPositions ( )

virtual

Member Function Documentation

static String Lucene::SegmentTermPositions::_getClassName ( )

inlinestatic

virtual void Lucene::SegmentTermPositions::close ( )

virtual

Frees associated resources.

Reimplemented from Lucene::SegmentTermDocs.

virtual String Lucene::SegmentTermPositions::getClassName ( )

inlinevirtual

Reimplemented from Lucene::SegmentTermDocs.

virtual ByteArray Lucene::SegmentTermPositions::getPayload ( ByteArray  data, int32_t  offset  )

virtual

Returns the payload data at the current term position.

Reimplemented from Lucene::TermPositions.

virtual int32_t Lucene::SegmentTermPositions::getPayloadLength ( )

virtual

Returns the length of the payload at the current term position.

Reimplemented from Lucene::TermPositions.

virtual bool Lucene::SegmentTermPositions::isPayloadAvailable ( )

virtual

Checks if a payload can be loaded at this position.

Reimplemented from Lucene::TermPositions.

virtual void Lucene::SegmentTermPositions::lazySkip ( )

protectedvirtual

It is not always necessary to move the prox pointer to a new document after the freq pointer has been moved. Consider for example a phrase query with two terms: the freq pointer for term 1 has to move to document x to answer the question if the term occurs in that document. But only if term 2 also matches document x, the positions have to be read to figure out if term 1 and term 2 appear next to each other in document x and thus satisfy the query. So we move the prox pointer lazily to the document as soon as positions are requested.

virtual bool Lucene::SegmentTermPositions::next ( )

virtual

Moves to the next pair in the enumeration.

Reimplemented from Lucene::SegmentTermDocs.

virtual int32_t Lucene::SegmentTermPositions::nextPosition ( )

virtual

Returns next position in the current document.

Reimplemented from Lucene::TermPositions.

virtual int32_t Lucene::SegmentTermPositions::read ( Collection< int32_t >  docs, Collection< int32_t >  freqs  )

virtual

Not supported.

Reimplemented from Lucene::SegmentTermDocs.

int32_t Lucene::SegmentTermPositions::readDeltaPosition ( )

protected

virtual void Lucene::SegmentTermPositions::seek ( const TermInfoPtr &  ti, const TermPtr &  term  )

virtual

Reimplemented from Lucene::SegmentTermDocs.

boost::shared_ptr< SegmentTermPositions > Lucene::SegmentTermPositions::shared_from_this ( )

inline

virtual void Lucene::SegmentTermPositions::skipPayload ( )

protectedvirtual

virtual void Lucene::SegmentTermPositions::skippingDoc ( )

protectedvirtual

Reimplemented from Lucene::SegmentTermDocs.

virtual void Lucene::SegmentTermPositions::skipPositions ( int32_t  n )

protectedvirtual

virtual void Lucene::SegmentTermPositions::skipProx ( int64_t  proxPointer, int32_t  payloadLength  )

protectedvirtual

Overridden by SegmentTermPositions to skip in prox stream.

Reimplemented from Lucene::SegmentTermDocs.

Field Documentation

int64_t Lucene::SegmentTermPositions::lazySkipPointer

protected

int32_t Lucene::SegmentTermPositions::lazySkipProxCount

protected

bool Lucene::SegmentTermPositions::needToLoadPayload

protected

Indicates whether the payload of the current position has been read from the proxStream yet.

int32_t Lucene::SegmentTermPositions::payloadLength

protected

The current payload length.

int32_t Lucene::SegmentTermPositions::position

protected

int32_t Lucene::SegmentTermPositions::proxCount

protected

IndexInputPtr Lucene::SegmentTermPositions::proxStream

protected

---

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

• SegmentTermPositions.h