gate.creole.annic.apache.lucene.search
Class TermScorer

java.lang.Object
  gate.creole.annic.apache.lucene.search.Scorer
      gate.creole.annic.apache.lucene.search.TermScorer

final class TermScorer
extends Scorer

Field Summary

private int	doc
private int[]	docs
private int[]	freqs
private byte[]	norms
private int	pointer
private int	pointerMax
private static int	SCORE_CACHE_SIZE
private float[]	scoreCache
private Term	term
private TermDocs	termDocs
private Weight	weight
private float	weightValue

Fields inherited from class gate.creole.annic.apache.lucene.search.Scorer

searcher

Constructor Summary

TermScorer(Weight weight, TermDocs td, Similarity similarity, byte[] norms, Term term)

Method Summary

int	doc() Returns the current document number.
Explanation	explain(int doc) Returns an explanation of the score for doc.
boolean	next(Searcher searcher) Advance to the next document matching the query.
float	score(Searcher searcher) Returns the score of the current document.
boolean	skipTo(int target) Skips to the first match beyond the current whose document number is greater than or equal to target.
String	toString()

Methods inherited from class gate.creole.annic.apache.lucene.search.Scorer

getSimilarity, score

Methods inherited from class java.lang.Object

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

Field Detail

weight

private Weight weight

termDocs

private TermDocs termDocs

norms

private byte[] norms

weightValue

private float weightValue

doc

private int doc

term

private Term term

docs

private final int[] docs

freqs

private final int[] freqs

pointer

private int pointer

pointerMax

private int pointerMax

SCORE_CACHE_SIZE

private static final int SCORE_CACHE_SIZE

See Also:

Constant Field Values

scoreCache

private float[] scoreCache

Constructor Detail

TermScorer

TermScorer(Weight weight,
           TermDocs td,
           Similarity similarity,
           byte[] norms,
           Term term)
     throws IOException

Throws:

IOException

Method Detail

doc

public int doc()

Description copied from class: Scorer

Returns the current document number. Initially invalid, until #next() is called the first time.

Specified by:

doc in class Scorer

next

public boolean next(Searcher searcher)
             throws IOException

Description copied from class: Scorer

Advance to the next document matching the query. Returns true iff there is another match.

Specified by:

next in class Scorer

Throws:

IOException

score

public float score(Searcher searcher)
            throws IOException

Description copied from class: Scorer

Returns the score of the current document. Initially invalid, until #next() is called the first time.

Specified by:

score in class Scorer

Throws:

IOException

skipTo

public boolean skipTo(int target)
               throws IOException

Description copied from class: Scorer

Skips to the first match beyond the current whose document number is greater than or equal to target.

Returns true iff there is such a match.

Behaves as if written:

   boolean skipTo(int target) {
     do {
       if (!next())
             return false;
     } while (target > doc());
     return true;
   }
 

Most implementations are considerably more efficient than that.

Specified by:

skipTo in class Scorer

Throws:

IOException

explain

public Explanation explain(int doc)
                    throws IOException

Description copied from class: Scorer

Returns an explanation of the score for doc.

Specified by:

explain in class Scorer

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object