Class SpanNotQuery

Removes matches which overlap with another SpanQuery or within a x tokens before or y tokens after another SpanQuery.

Inheritance
object
Query
SpanQuery
SpanNotQuery
Inherited Members
Namespace: Lucene.Net.Search.Spans
Assembly: Lucene.Net.dll
Syntax
public class SpanNotQuery : SpanQuery

Constructors

SpanNotQuery(SpanQuery, SpanQuery)

Construct a SpanNotQuery matching spans from include which have no overlap with spans from exclude.

Declaration
public SpanNotQuery(SpanQuery include, SpanQuery exclude)
Parameters
Type Name Description
SpanQuery include
SpanQuery exclude

SpanNotQuery(SpanQuery, SpanQuery, int)

Construct a SpanNotQuery matching spans from include which have no overlap with spans from exclude within dist tokens of include.

Declaration
public SpanNotQuery(SpanQuery include, SpanQuery exclude, int dist)
Parameters
Type Name Description
SpanQuery include
SpanQuery exclude
int dist

SpanNotQuery(SpanQuery, SpanQuery, int, int)

Construct a SpanNotQuery matching spans from include which have no overlap with spans from exclude within pre tokens before or post tokens of include.

Declaration
public SpanNotQuery(SpanQuery include, SpanQuery exclude, int pre, int post)
Parameters
Type Name Description
SpanQuery include
SpanQuery exclude
int pre
int post

Properties

Exclude

Return the SpanQuery whose matches must not overlap those returned.

Declaration
public virtual SpanQuery Exclude { get; }
Property Value
Type Description
SpanQuery

Field

Returns the name of the field matched by this query.

Note that this may return null if the query matches no terms.
Declaration
public override string Field { get; }
Property Value
Type Description
string
Overrides

Include

Return the SpanQuery whose matches are filtered.

Declaration
public virtual SpanQuery Include { get; }
Property Value
Type Description
SpanQuery

Methods

Clone()

Returns a clone of this query.

Declaration
public override object Clone()
Returns
Type Description
object
Overrides

Equals(object)

Returns true if o is equal to this.

Declaration
public override bool Equals(object o)
Parameters
Type Name Description
object o
Returns
Type Description
bool
Overrides

ExtractTerms(ISet<Term>)

Expert: adds all terms occurring in this query to the terms set. Only works if this query is in its rewritten (Rewrite(IndexReader)) form.

Declaration
public override void ExtractTerms(ISet<Term> terms)
Parameters
Type Name Description
ISet<Term> terms
Overrides
Exceptions
Type Condition
InvalidOperationException

If this query is not yet rewritten

GetHashCode()

Serves as the default hash function.

Declaration
public override int GetHashCode()
Returns
Type Description
int

A hash code for the current object.
Overrides

GetSpans(AtomicReaderContext, IBits, IDictionary<Term, TermContext>)

Expert: Returns the matches for this query in an index. Used internally to search for spans.

Declaration
public override Spans GetSpans(AtomicReaderContext context, IBits acceptDocs, IDictionary<Term, TermContext> termContexts)
Parameters
Type Name Description
AtomicReaderContext context
IBits acceptDocs
IDictionary<Term, TermContext> termContexts
Returns
Type Description
Spans
Overrides

Rewrite(IndexReader)

Expert: called to re-write queries into primitive queries. For example, a PrefixQuery will be rewritten into a BooleanQuery that consists of TermQuerys.

Declaration
public override Query Rewrite(IndexReader reader)
Parameters
Type Name Description
IndexReader reader
Returns
Type Description
Query
Overrides

ToString(string)

Prints a query to a string, with field assumed to be the default field and omitted.

Declaration
public override string ToString(string field)
Parameters
Type Name Description
string field
Returns
Type Description
string
Overrides