Class PerFieldAnalyzerWrapper

This analyzer is used to facilitate scenarios where different fields Require different analysis techniques. Use the Map argument in PerFieldAnalyzerWrapper(Analyzer, IDictionary<String, Analyzer>) to add non-default analyzers for fields.

Example usage: 

IDictionary<string, Analyzer> analyzerPerField = new Dictionary<string, Analyzer>();
analyzerPerField["firstname"] = new KeywordAnalyzer();
analyzerPerField["lastname"] = new KeywordAnalyzer();

PerFieldAnalyzerWrapper aWrapper =
  new PerFieldAnalyzerWrapper(new StandardAnalyzer(version), analyzerPerField);

In this example, StandardAnalyzer will be used for all fields except "firstname" and "lastname", for which KeywordAnalyzer will be used.

A PerFieldAnalyzerWrapper can be used like any other analyzer, for both indexing and query parsing.

Inheritance
System.Object
Analyzer
AnalyzerWrapper
PerFieldAnalyzerWrapper
Implements
System.IDisposable
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
Namespace: Lucene.Net.Analysis.Miscellaneous
Assembly: Lucene.Net.Analysis.Common.dll
Syntax
public sealed class PerFieldAnalyzerWrapper : AnalyzerWrapper, IDisposable

Constructors

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PerFieldAnalyzerWrapper(Analyzer)

Constructs with default analyzer.

Declaration
public PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer)
Parameters
Type Name Description
Analyzer defaultAnalyzer

Any fields not specifically defined to use a different analyzer will use the one provided here.

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PerFieldAnalyzerWrapper(Analyzer, IDictionary<String, Analyzer>)

Constructs with default analyzer and a map of analyzers to use for specific fields.

Declaration
public PerFieldAnalyzerWrapper(Analyzer defaultAnalyzer, IDictionary<string, Analyzer> fieldAnalyzers)
Parameters
Type Name Description
Analyzer defaultAnalyzer

Any fields not specifically defined to use a different analyzer will use the one provided here.

System.Collections.Generic.IDictionary<System.String, Analyzer> fieldAnalyzers

a System.Collections.Generic.IDictionary<TKey, TValue> (String field name to the Analyzer) to be used for those fields

Methods

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GetWrappedAnalyzer(String)

Declaration
protected override Analyzer GetWrappedAnalyzer(string fieldName)
Parameters
Type Name Description
System.String fieldName
Returns
Type Description
Analyzer
Overrides
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ToString()

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

Implements

System.IDisposable