protected class BooleanQuery.BooleanWeight extends Weight
| Modifier and Type | Field and Description |
|---|---|
protected int |
maxCoord |
protected Similarity |
similarity
The Similarity implementation.
|
protected ArrayList<Weight> |
weights |
| Constructor and Description |
|---|
BooleanQuery.BooleanWeight(IndexSearcher searcher,
boolean disableCoord) |
| Modifier and Type | Method and Description |
|---|---|
BulkScorer |
bulkScorer(AtomicReaderContext context,
boolean scoreDocsInOrder,
Bits acceptDocs)
Optional method, to return a
BulkScorer to
score the query and send hits to a Collector. |
float |
coord(int overlap,
int maxOverlap) |
Explanation |
explain(AtomicReaderContext context,
int doc)
An explanation of the score computation for the named document.
|
Query |
getQuery()
The query that this concerns.
|
float |
getValueForNormalization()
The value for normalization of contained query clauses (e.g.
|
void |
normalize(float norm,
float topLevelBoost)
Assigns the query normalization factor and boost from parent queries to this.
|
Scorer |
scorer(AtomicReaderContext context,
Bits acceptDocs)
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.
|
protected Similarity similarity
protected int maxCoord
public BooleanQuery.BooleanWeight(IndexSearcher searcher, boolean disableCoord) throws IOException
IOExceptionpublic Query getQuery()
Weightpublic float getValueForNormalization()
throws IOException
WeightgetValueForNormalization in class WeightIOExceptionpublic float coord(int overlap,
int maxOverlap)
public void normalize(float norm,
float topLevelBoost)
Weightpublic Explanation explain(AtomicReaderContext context, int doc) throws IOException
Weightexplain in class Weightcontext - the readers context to create the Explanation for.doc - the document's id relative to the given context's readerIOException - if an IOException occurspublic BulkScorer bulkScorer(AtomicReaderContext context, boolean scoreDocsInOrder, Bits acceptDocs) throws IOException
WeightBulkScorer to
score the query and send hits to a Collector.
Only queries that have a different top-level approach
need to override this; the default implementation
pulls a normal Scorer and iterates and
collects the resulting hits.bulkScorer in class Weightcontext - the AtomicReaderContext 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.acceptDocs - Bits that represent the allowable docs to match (typically deleted docs
but possibly filtering other documents)BulkScorer which scores documents and
passes them to a collector.IOException - if there is a low-level I/O errorpublic Scorer scorer(AtomicReaderContext context, Bits acceptDocs) 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 Weightcontext - the AtomicReaderContext for which to return the Scorer.acceptDocs - Bits that represent the allowable docs to match (typically deleted docs
but possibly filtering other documents)Scorer which scores documents in/out-of order.IOException - if there is a low-level I/O errorpublic boolean scoresDocsOutOfOrder()
WeightCollector's
acceptsDocsOutOfOrder and
Weight.bulkScorer(AtomicReaderContext, boolean, Bits) 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 WeightCopyright © 2000-2014 Apache Software Foundation. All Rights Reserved.