An abstract class that defines a way for Payload*Query instances to transform the cumulative effects of payload scores for a document. More...

#include <PayloadFunction.h>

Inheritance diagram for Lucene::PayloadFunction:

Public Member Functions
virtual	~PayloadFunction ()

virtual String	getClassName ()

boost::shared_ptr < PayloadFunction >	shared_from_this ()

virtual double	currentScore (int32_t docId, const String &field, int32_t start, int32_t end, int32_t numPayloadsSeen, double currentScore, double currentPayloadScore)=0
	Calculate the score up to this point for this doc and field. More...

virtual double	docScore (int32_t docId, const String &field, int32_t numPayloadsSeen, double payloadScore)=0
	Calculate the final score for all the payloads seen so far for this doc/field. More...

virtual int32_t	hashCode ()=0
	Return hash code for this object. More...

virtual bool	equals (LuceneObjectPtr other)=0
	Return whether two objects are equal. More...

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 (LuceneObjectPtr other=LuceneObjectPtr())
	Return clone of this object. More...

virtual int32_t	compareTo (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 ()

Protected Member Functions
	PayloadFunction ()

Protected Member Functions inherited from Lucene::LuceneObject
	LuceneObject ()

Additional Inherited Members
Protected Attributes inherited from Lucene::LuceneSync
SynchronizePtr	objectLock

LuceneSignalPtr	objectSignal

Detailed Description

An abstract class that defines a way for Payload*Query instances to transform the cumulative effects of payload scores for a document.

See Also: PayloadTermQuery for more information

Constructor & Destructor Documentation

Lucene::PayloadFunction::PayloadFunction ( )

protected

virtual Lucene::PayloadFunction::~PayloadFunction ( )

virtual

Member Function Documentation

static String Lucene::PayloadFunction::_getClassName ( )

inlinestatic

virtual double Lucene::PayloadFunction::currentScore	(	int32_t	docId,
		const String &	field,
		int32_t	start,
		int32_t	end,
		int32_t	numPayloadsSeen,
		double	currentScore,
		double	currentPayloadScore
	)

pure virtual

Calculate the score up to this point for this doc and field.

Parameters

docId	The current doc
field	The field
start	The start position of the matching Span
end	The end position of the matching Span
numPayloadsSeen	The number of payloads seen so far
currentScore	The current score so far
currentPayloadScore	The score for the current payload

Returns: The new current Score

See Also: Spans

Implemented in Lucene::AveragePayloadFunction, Lucene::MaxPayloadFunction, and Lucene::MinPayloadFunction.

virtual double Lucene::PayloadFunction::docScore	(	int32_t	docId,
		const String &	field,
		int32_t	numPayloadsSeen,
		double	payloadScore
	)

pure virtual

Calculate the final score for all the payloads seen so far for this doc/field.

Parameters

docId	The current doc
field	The current field
numPayloadsSeen	The total number of payloads seen on this document
payloadScore	The raw score for those payloads