org.galagosearch.core.retrieval.structured
Class ScoringFunctionIterator

java.lang.Object
  org.galagosearch.core.retrieval.structured.ScoringFunctionIterator

All Implemented Interfaces:

ScoreIterator, StructuredIterator

Direct Known Subclasses:

DirichletScorer

public abstract class ScoringFunctionIterator
extends java.lang.Object
implements ScoreIterator

Author:

trevor

Constructor Summary

ScoringFunctionIterator(CountIterator iterator)

Method Summary

boolean	hasMatch(int document)
boolean	isDone()
void	movePast(int document)
void	moveTo(int document)
int	nextCandidate()
void	reset()
double	score(int document, int length)
abstract double	scoreCount(int count, int length)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ScoringFunctionIterator

public ScoringFunctionIterator(CountIterator iterator)

Method Detail

scoreCount

public abstract double scoreCount(int count,
                                  int length)

score

public double score(int document,
                    int length)

Specified by:

score in interface ScoreIterator

moveTo

public void moveTo(int document)
            throws java.io.IOException

Specified by:

moveTo in interface ScoreIterator

Throws:

java.io.IOException

movePast

public void movePast(int document)
              throws java.io.IOException

Specified by:

movePast in interface ScoreIterator

Throws:

java.io.IOException

nextCandidate

public int nextCandidate()

Specified by:

nextCandidate in interface ScoreIterator

isDone

public boolean isDone()

Specified by:

isDone in interface ScoreIterator

hasMatch

public boolean hasMatch(int document)

Specified by:

hasMatch in interface ScoreIterator

reset

public void reset()
           throws java.io.IOException

Specified by:

reset in interface ScoreIterator

Specified by:

reset in interface StructuredIterator

Throws:

java.io.IOException