protected class BooleanQuery.BooleanWeight extends Weight
NOTE: this API and implementation is subject to change suddenly in the next release.
| Modifier and Type | Field and Description |
|---|---|
protected int |
maxCoord |
protected Similarity |
similarity
The Similarity implementation.
|
protected ArrayList<Weight> |
weights |
| Constructor and Description |
|---|
BooleanQuery.BooleanWeight(Searcher searcher,
boolean disableCoord) |
| Modifier and Type | Method and Description |
|---|---|
Explanation |
explain(IndexReader reader,
int doc)
An explanation of the score computation for the named document.
|
Query |
getQuery()
The query that this concerns.
|
float |
getValue()
The weight for this query.
|
void |
normalize(float norm)
Assigns the query normalization factor to this.
|
Scorer |
scorer(IndexReader reader,
boolean scoreDocsInOrder,
boolean topScorer)
Returns a
Scorer which scores documents in/out-of order according
to scoreDocsInOrder. |
boolean |
scoresDocsOutOfOrder()
Returns true iff this implementation scores docs only out of order.
|
float |
sumOfSquaredWeights()
The sum of squared weights of contained query clauses.
|
protected Similarity similarity
protected int maxCoord
public BooleanQuery.BooleanWeight(Searcher searcher, boolean disableCoord) throws IOException
IOExceptionpublic Query getQuery()
Weightpublic float getValue()
Weightpublic float sumOfSquaredWeights()
throws IOException
WeightsumOfSquaredWeights in class WeightIOExceptionpublic void normalize(float norm)
Weightpublic Explanation explain(IndexReader reader, int doc) throws IOException
Weightexplain in class Weightreader - sub-reader containing the give docIOExceptionpublic Scorer scorer(IndexReader reader, boolean scoreDocsInOrder, boolean topScorer) throws IOException
WeightScorer which scores documents in/out-of order according
to scoreDocsInOrder.
NOTE: even if scoreDocsInOrder is false, it is
recommended to check whether the returned Scorer indeed scores
documents out of order (i.e., call Weight.scoresDocsOutOfOrder()), as
some Scorer implementations will always return documents
in-order.
NOTE: null can be returned if no documents will be scored by this
query.
scorer in class Weightreader - the IndexReader for which to return the Scorer.scoreDocsInOrder - specifies whether in-order scoring of documents is required. Note
that if set to false (i.e., out-of-order scoring is required),
this method can return whatever scoring mode it supports, as every
in-order scorer is also an out-of-order one. However, an
out-of-order scorer may not support DocIdSetIterator.nextDoc()
and/or DocIdSetIterator.advance(int), therefore it is recommended to
request an in-order scorer if use of these methods is required.topScorer - if true, Scorer.score(Collector) will be called; if false,
DocIdSetIterator.nextDoc() and/or DocIdSetIterator.advance(int) will
be called.Scorer which scores documents in/out-of order.IOExceptionpublic boolean scoresDocsOutOfOrder()
WeightCollector's
acceptsDocsOutOfOrder and
Weight.scorer(org.apache.lucene.index.IndexReader, boolean, boolean) to
create a matching Scorer instance for a given Collector, or
vice versa.
NOTE: the default implementation returns false, i.e.
the Scorer scores documents in-order.
scoresDocsOutOfOrder in class Weight