Class Term

A Term represents a word from text. This is the unit of search. It is composed of two elements, the text of the word, as a string, and the name of the field that the text occurred in.

Note that terms may represent more than words from text fields, but also things like dates, email addresses, urls, etc.

Inheritance
System.Object
Term
Implements
IEquatable<Term>
Namespace: Lucene.Net.Index
Assembly: Lucene.Net.dll
Syntax
public sealed class Term : IComparable<Term>, IEquatable<Term>

Constructors

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Term(String)

Constructs a Term with the given field and empty text. this serves two purposes: 1) reuse of a Term with the same field. 2) pattern for a query.

Declaration
public Term(string fld)
Parameters
Type Name Description
System.String fld

field's name

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Term(String, BytesRef)

Constructs a Term with the given field and bytes.

Note that a null field or null bytes value results in undefined behavior for most Lucene APIs that accept a Term parameter.

WARNING: the provided BytesRef is not copied, but used directly. Therefore the bytes should not be modified after construction, for example, you should clone a copy by DeepCopyOf(BytesRef) rather than pass reused bytes from a TermsEnum.

Declaration
public Term(string fld, BytesRef bytes)
Parameters
Type Name Description
System.String fld
BytesRef bytes
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Term(String, String)

Constructs a Term with the given field and text.

Note that a null field or null text value results in undefined behavior for most Lucene APIs that accept a Term parameter.

Declaration
public Term(string fld, string text)
Parameters
Type Name Description
System.String fld
System.String text

Properties

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Bytes

Returns the bytes of this term.

Declaration
public BytesRef Bytes { get; }
Property Value
Type Description
BytesRef
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Field

Returns the field of this term. The field indicates the part of a document which this term came from.

Declaration
public string Field { get; }
Property Value
Type Description
System.String

Methods

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CompareTo(Term)

Compares two terms, returning a negative integer if this term belongs before the argument, zero if this term is equal to the argument, and a positive integer if this term belongs after the argument.

The ordering of terms is first by field, then by text.

Declaration
public int CompareTo(Term other)
Parameters
Type Name Description
Term other
Returns
Type Description
System.Int32
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Equals(Term)

Declaration
public bool Equals(Term other)
Parameters
Type Name Description
Term other
Returns
Type Description
System.Boolean
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Equals(Object)

Declaration
public override bool Equals(object obj)
Parameters
Type Name Description
System.Object obj
Returns
Type Description
System.Boolean
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GetHashCode()

Declaration
public override int GetHashCode()
Returns
Type Description
System.Int32
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Text()

Returns the text of this term. In the case of words, this is simply the text of the word. In the case of dates and other types, this is an encoding of the object as a string.

Declaration
public string Text()
Returns
Type Description
System.String
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ToString()

Declaration
public override string ToString()
Returns
Type Description
System.String
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ToString(BytesRef)

Returns human-readable form of the term text. If the term is not unicode, the raw bytes will be printed instead.

Declaration
public static string ToString(BytesRef termText)
Parameters
Type Name Description
BytesRef termText
Returns
Type Description
System.String

Implements

IEquatable<>