Package org.apache.lucene.search.spans
Class SpanNotQuery
- 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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- org.apache.lucene.search.spans.SpanNotQuery
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public final class SpanNotQuery extends SpanQuery
Removes matches which overlap with another SpanQuery or which are within x tokens before or y tokens after another SpanQuery.
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Nested Class Summary
Nested Classes Modifier and Type Class Description class
SpanNotQuery.SpanNotWeight
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Constructor Summary
Constructors Constructor Description SpanNotQuery(SpanQuery include, SpanQuery exclude)
Construct a SpanNotQuery matching spans frominclude
which have no overlap with spans fromexclude
.SpanNotQuery(SpanQuery include, SpanQuery exclude, int dist)
Construct a SpanNotQuery matching spans frominclude
which have no overlap with spans fromexclude
withindist
tokens ofinclude
.SpanNotQuery(SpanQuery include, SpanQuery exclude, int pre, int post)
Construct a SpanNotQuery matching spans frominclude
which have no overlap with spans fromexclude
withinpre
tokens before orpost
tokens ofinclude
.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description SpanWeight
createWeight(IndexSearcher searcher, ScoreMode scoreMode, float boost)
Expert: Constructs an appropriate Weight implementation for this query.boolean
equals(Object other)
Returns true iffo
is equal to this.SpanQuery
getExclude()
Return the SpanQuery whose matches must not overlap those returned.String
getField()
Returns the name of the field matched by this query.SpanQuery
getInclude()
Return the SpanQuery whose matches are filtered.int
hashCode()
Override and implement query hash code properly in a subclass.Query
rewrite(IndexReader reader)
Expert: called to re-write queries into primitive queries.String
toString(String field)
Prints a query to a string, withfield
assumed to be the default field and omitted.void
visit(QueryVisitor visitor)
Recurse through the query tree, visiting any child queries-
Methods inherited from class org.apache.lucene.search.spans.SpanQuery
getTermStates, getTermStates
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Methods inherited from class org.apache.lucene.search.Query
classHash, sameClassAs, toString
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Constructor Detail
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SpanNotQuery
public SpanNotQuery(SpanQuery include, SpanQuery exclude)
Construct a SpanNotQuery matching spans frominclude
which have no overlap with spans fromexclude
.
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SpanNotQuery
public SpanNotQuery(SpanQuery include, SpanQuery exclude, int dist)
Construct a SpanNotQuery matching spans frominclude
which have no overlap with spans fromexclude
withindist
tokens ofinclude
. Inversely, a negativedist
value may be used to specify a certain amount of allowable overlap.
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SpanNotQuery
public SpanNotQuery(SpanQuery include, SpanQuery exclude, int pre, int post)
Construct a SpanNotQuery matching spans frominclude
which have no overlap with spans fromexclude
withinpre
tokens before orpost
tokens ofinclude
. Inversely, negative values forpre
and/orpost
allow a certain amount of overlap to occur.
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Method Detail
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getInclude
public SpanQuery getInclude()
Return the SpanQuery whose matches are filtered.
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getExclude
public SpanQuery getExclude()
Return the SpanQuery whose matches must not overlap those returned.
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getField
public String getField()
Description copied from class:SpanQuery
Returns the name of the field matched by this query.
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toString
public String toString(String field)
Description copied from class:Query
Prints a query to a string, withfield
assumed to be the default field and omitted.
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createWeight
public SpanWeight createWeight(IndexSearcher searcher, ScoreMode scoreMode, 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.
- Specified by:
createWeight
in classSpanQuery
scoreMode
- How the produced scorers will be consumed.boost
- The boost that is propagated by the parent queries.- Throws:
IOException
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rewrite
public Query rewrite(IndexReader reader) throws IOException
Description copied from class:Query
Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.- Overrides:
rewrite
in classQuery
- Throws:
IOException
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visit
public void visit(QueryVisitor visitor)
Description copied from class:Query
Recurse through the query tree, visiting any child queries
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equals
public boolean equals(Object other)
Returns true iffo
is equal to this.- Specified by:
equals
in classQuery
- See Also:
Query.sameClassAs(Object)
,Query.classHash()
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hashCode
public int hashCode()
Description copied from class:Query
Override and implement query hash code properly in a subclass. This is required so thatQueryCache
works properly.- Specified by:
hashCode
in classQuery
- See Also:
Query.equals(Object)
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