Class TermRangeFilter

A Filter that restricts search results to a range of term values in a given field.

This filter matches the documents looking for terms that fall into the supplied range according to , It is not intended for numerical ranges; use NumericRangeFilter instead.

If you construct a large number of range filters with different ranges but on the same field, FieldCacheRangeFilter may have significantly better performance.

@since 2.9

Inheritance
System.Object
Filter
MultiTermQueryWrapperFilter<TermRangeQuery>
TermRangeFilter
Inherited Members
Namespace: Lucene.Net.Search
Assembly: Lucene.Net.dll
Syntax
public class TermRangeFilter : MultiTermQueryWrapperFilter<TermRangeQuery>

Constructors

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TermRangeFilter(String, BytesRef, BytesRef, Boolean, Boolean)

Declaration
public TermRangeFilter(string fieldName, BytesRef lowerTerm, BytesRef upperTerm, bool includeLower, bool includeUpper)
Parameters
Type Name Description
System.String fieldName

The field this range applies to

BytesRef lowerTerm

The lower bound on this range

BytesRef upperTerm

The upper bound on this range

System.Boolean includeLower

Does this range include the lower bound?

System.Boolean includeUpper

Does this range include the upper bound?

Properties

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IncludesLower

Returns true if the lower endpoint is inclusive

Declaration
public virtual bool IncludesLower { get; }
Property Value
Type Description
System.Boolean
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IncludesUpper

Returns true if the upper endpoint is inclusive

Declaration
public virtual bool IncludesUpper { get; }
Property Value
Type Description
System.Boolean
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LowerTerm

Returns the lower value of this range filter

Declaration
public virtual BytesRef LowerTerm { get; }
Property Value
Type Description
BytesRef
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UpperTerm

Returns the upper value of this range filter

Declaration
public virtual BytesRef UpperTerm { get; }
Property Value
Type Description
BytesRef

Methods

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Less(String, BytesRef)

Constructs a filter for field fieldName matching less than or equal to upperTerm.

Declaration
public static TermRangeFilter Less(string fieldName, BytesRef upperTerm)
Parameters
Type Name Description
System.String fieldName
BytesRef upperTerm
Returns
Type Description
TermRangeFilter
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More(String, BytesRef)

Constructs a filter for field fieldName matching greater than or equal to lowerTerm.

Declaration
public static TermRangeFilter More(string fieldName, BytesRef lowerTerm)
Parameters
Type Name Description
System.String fieldName
BytesRef lowerTerm
Returns
Type Description
TermRangeFilter
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NewStringRange(String, String, String, Boolean, Boolean)

Factory that creates a new TermRangeFilter using s for term text.

Declaration
public static TermRangeFilter NewStringRange(string field, string lowerTerm, string upperTerm, bool includeLower, bool includeUpper)
Parameters
Type Name Description
System.String field
System.String lowerTerm
System.String upperTerm
System.Boolean includeLower
System.Boolean includeUpper
Returns
Type Description
TermRangeFilter