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java.lang.Object org.apache.lucene.search.Weight org.apache.lucene.search.DisjunctionMaxQuery.DisjunctionMaxWeight
protected class DisjunctionMaxQuery.DisjunctionMaxWeight
Expert: the Weight for DisjunctionMaxQuery, used to normalize, score and explain these queries.
NOTE: this API and implementation is subject to change suddenly in the next release.
Field Summary | |
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protected ArrayList<Weight> |
weights
The Weights for our subqueries, in 1-1 correspondence with disjuncts |
Constructor Summary | |
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DisjunctionMaxQuery.DisjunctionMaxWeight(IndexSearcher searcher)
Construct the Weight for this Query searched by searcher. |
Method Summary | |
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Explanation |
explain(AtomicReaderContext context,
int doc)
Explain the score we computed for doc |
Query |
getQuery()
Return our associated DisjunctionMaxQuery |
float |
getValueForNormalization()
Compute the sub of squared weights of us applied to our subqueries. |
void |
normalize(float norm,
float topLevelBoost)
Apply the computed normalization factor to our subqueries |
Scorer |
scorer(AtomicReaderContext context,
boolean scoreDocsInOrder,
boolean topScorer,
Bits acceptDocs)
Create the scorer used to score our associated DisjunctionMaxQuery |
Methods inherited from class org.apache.lucene.search.Weight |
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scoresDocsOutOfOrder |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected ArrayList<Weight> weights
Constructor Detail |
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public DisjunctionMaxQuery.DisjunctionMaxWeight(IndexSearcher searcher) throws IOException
IOException
Method Detail |
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public Query getQuery()
getQuery
in class Weight
public float getValueForNormalization() throws IOException
getValueForNormalization
in class Weight
IOException
public void normalize(float norm, float topLevelBoost)
normalize
in class Weight
public Scorer scorer(AtomicReaderContext context, boolean scoreDocsInOrder, boolean topScorer, Bits acceptDocs) throws IOException
scorer
in class Weight
context
- 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.topScorer
- if true, Scorer.score(Collector)
will be called; if false,
DocIdSetIterator.nextDoc()
and/or DocIdSetIterator.advance(int)
will
be called.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 Explanation explain(AtomicReaderContext context, int doc) throws IOException
explain
in class Weight
context
- the readers context to create the Explanation
for.doc
- the document's id relative to the given context's reader
IOException
- if an IOException
occurs
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