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Java Source Code / Java Documentation » ERP CRM Financial » sakai » org.apache.lucene.search.highlight 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.lucene.search.highlight.QueryScorer

QueryScorer
public class QueryScorer implements Scorer(Code)
Scorer implementation which scores text fragments by the number of unique query terms found. This class uses the QueryTermExtractor class to process determine the query terms and their boosts to be used.
author:
   mark@searcharea.co.uk


Field Summary
 TextFragmentcurrentTextFragment
    
 floatmaxTermWeight
    
 floattotalScore
    
 HashSetuniqueTermsInFragment
    

Constructor Summary
public  QueryScorer(Query query)
    
public  QueryScorer(Query query, String fieldName)
    
public  QueryScorer(Query query, IndexReader reader, String fieldName)
    
public  QueryScorer(WeightedTerm[] weightedTerms)
    

Method Summary
public  voidallFragmentsProcessed()
    
public  floatgetFragmentScore()
    
public  floatgetMaxTermWeight()
    
public  floatgetTokenScore(Token token)
    
public  voidstartFragment(TextFragment newFragment)
    

Field Detail
currentTextFragment
TextFragment currentTextFragment(Code)



maxTermWeight
float maxTermWeight(Code)



totalScore
float totalScore(Code)



uniqueTermsInFragment
HashSet uniqueTermsInFragment(Code)




Constructor Detail
QueryScorer
public QueryScorer(Query query)(Code)

Parameters:
  query - a Lucene query (ideally rewritten using query.rewrite before beingpassed to this class and the searcher)



QueryScorer
public QueryScorer(Query query, String fieldName)(Code)

Parameters:
  query - a Lucene query (ideally rewritten using query.rewrite before beingpassed to this class and the searcher)
Parameters:
  fieldName - the Field name which is used to match Query terms



QueryScorer
public QueryScorer(Query query, IndexReader reader, String fieldName)(Code)

Parameters:
  query - a Lucene query (ideally rewritten using query.rewrite before beingpassed to this class and the searcher)
Parameters:
  reader - used to compute IDF which can be used to a) score selectedfragments better b) use graded highlights eg set font colorintensity
Parameters:
  fieldName - the field on which Inverse Document Frequency (IDF) calculationsare based



QueryScorer
public QueryScorer(WeightedTerm[] weightedTerms)(Code)




Method Detail
allFragmentsProcessed
public void allFragmentsProcessed()(Code)



getFragmentScore
public float getFragmentScore()(Code)



getMaxTermWeight
public float getMaxTermWeight()(Code)
The highest weighted term (useful for passing toGradientFormatter to set top end of coloring scale.



getTokenScore
public float getTokenScore(Token token)(Code)



startFragment
public void startFragment(TextFragment newFragment)(Code)



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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