Package org.apache.lucene.search.spans
Class SpanQuery
- java.lang.Object
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- org.apache.lucene.search.Query
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- org.apache.lucene.search.spans.SpanQuery
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- Direct Known Subclasses:
FieldMaskingSpanQuery
,SpanBoostQuery
,SpanContainingQuery
,SpanMultiTermQueryWrapper
,SpanNearQuery
,SpanNotQuery
,SpanOrQuery
,SpanPositionCheckQuery
,SpanTermQuery
,SpanWithinQuery
public abstract class SpanQuery extends Query
Base class for span-based queries.
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Constructor Summary
Constructors Constructor Description SpanQuery()
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description abstract SpanWeight
createWeight(IndexSearcher searcher, boolean needsScores, float boost)
Expert: Constructs an appropriate Weight implementation for this query.abstract String
getField()
Returns the name of the field matched by this query.static Map<Term,TermContext>
getTermContexts(Collection<SpanWeight> weights)
Build a map of terms to termcontexts, for use in constructing SpanWeightsstatic Map<Term,TermContext>
getTermContexts(SpanWeight... weights)
Build a map of terms to termcontexts, for use in constructing SpanWeights
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Method Detail
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getField
public abstract String getField()
Returns the name of the field matched by this query.
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createWeight
public abstract SpanWeight createWeight(IndexSearcher searcher, boolean needsScores, float boost) throws IOException
Description copied from class:Query
Expert: Constructs an appropriate Weight implementation for this query.Only implemented by primitive queries, which re-write to themselves.
- Overrides:
createWeight
in classQuery
needsScores
- True if document scores (Scorer.score()
) are needed.boost
- The boost that is propagated by the parent queries.- Throws:
IOException
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getTermContexts
public static Map<Term,TermContext> getTermContexts(SpanWeight... weights)
Build a map of terms to termcontexts, for use in constructing SpanWeights- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
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getTermContexts
public static Map<Term,TermContext> getTermContexts(Collection<SpanWeight> weights)
Build a map of terms to termcontexts, for use in constructing SpanWeights- NOTE: This API is for internal purposes only and might change in incompatible ways in the next release.
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