Class PatternReplaceCharFilter

Lucene.Net.Analysis.CharFilter that uses a regular expression for the target of replace string. The pattern match will be done in each "block" in char stream.

ex1) source="aa bb aa bb", pattern="(aa)\s+(bb)" replacement="$1#$2" output="aa#bb aa#bb"

NOTE: If you produce a phrase that has different length to source string and the field is used for highlighting for a term of the phrase, you will face a trouble.

ex2) source="aa123bb", pattern="(aa)\d+(bb)" replacement="$1 $2" output="aa bb" and you want to search bb and highlight it, you will get highlight snippet="aa1<em>23bb</em>"

@since Solr 1.5

Inheritance
System.Object
System.MarshalByRefObject
System.IO.TextReader
Lucene.Net.Analysis.CharFilter
BaseCharFilter
PatternReplaceCharFilter
Implements
System.IDisposable
Inherited Members
Lucene.Net.Analysis.CharFilter.m_input
Lucene.Net.Analysis.CharFilter.Reset()
Lucene.Net.Analysis.CharFilter.IsReady
Lucene.Net.Analysis.CharFilter.IsMarkSupported
System.IO.TextReader.Null
System.IO.TextReader.Close()
System.IO.TextReader.Dispose()
System.IO.TextReader.Peek()
System.IO.TextReader.ReadAsync(System.Char[], System.Int32, System.Int32)
System.IO.TextReader.ReadBlock(System.Char[], System.Int32, System.Int32)
System.IO.TextReader.ReadBlockAsync(System.Char[], System.Int32, System.Int32)
System.IO.TextReader.ReadLine()
System.IO.TextReader.ReadLineAsync()
System.IO.TextReader.ReadToEnd()
System.IO.TextReader.ReadToEndAsync()
System.IO.TextReader.Synchronized(System.IO.TextReader)
System.MarshalByRefObject.GetLifetimeService()
System.MarshalByRefObject.InitializeLifetimeService()
System.MarshalByRefObject.MemberwiseClone(System.Boolean)
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)
System.Object.ToString()
Namespace: Lucene.Net.Analysis.Pattern
Assembly: Lucene.Net.Analysis.Common.dll
Syntax
public class PatternReplaceCharFilter : BaseCharFilter, IDisposable

Constructors

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PatternReplaceCharFilter(Regex, String, Int32, String, TextReader)

Declaration
[Obsolete]
public PatternReplaceCharFilter(Regex pattern, string replacement, int maxBlockChars, string blockDelimiter, TextReader in)
Parameters
Type Name Description
System.Text.RegularExpressions.Regex pattern
System.String replacement
System.Int32 maxBlockChars
System.String blockDelimiter
System.IO.TextReader in
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PatternReplaceCharFilter(Regex, String, TextReader)

Declaration
public PatternReplaceCharFilter(Regex pattern, string replacement, TextReader in)
Parameters
Type Name Description
System.Text.RegularExpressions.Regex pattern
System.String replacement
System.IO.TextReader in

Fields

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DEFAULT_MAX_BLOCK_CHARS

Declaration
[Obsolete]
public const int DEFAULT_MAX_BLOCK_CHARS = 10000
Field Value
Type Description
System.Int32

Methods

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Correct(Int32)

Declaration
protected override int Correct(int currentOff)
Parameters
Type Name Description
System.Int32 currentOff
Returns
Type Description
System.Int32
Overrides
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Read()

Declaration
public override int Read()
Returns
Type Description
System.Int32
Overrides
Lucene.Net.Analysis.CharFilter.Read()
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Read(Char[], Int32, Int32)

Declaration
public override int Read(char[] cbuf, int off, int len)
Parameters
Type Name Description
System.Char[] cbuf
System.Int32 off
System.Int32 len
Returns
Type Description
System.Int32
Overrides

Implements

System.IDisposable