Class MockGraphTokenFilter

Randomly inserts overlapped (posInc=0) tokens with posLength sometimes > 1. The chain must have an Lucene.Net.Analysis.TokenAttributes.IOffsetAttribute.

Inheritance

object

AttributeSource

TokenStream

TokenFilter

LookaheadTokenFilter

LookaheadTokenFilter<LookaheadTokenFilter.Position>

MockGraphTokenFilter

Implements

IDisposable

Inherited Members

TokenFilter.End()

TokenStream.Dispose()

AttributeSource.GetAttributeFactory()

AttributeSource.GetAttributeClassesEnumerator()

AttributeSource.GetAttributeImplsEnumerator()

AttributeSource.AddAttributeImpl(Attribute)

AttributeSource.AddAttribute<T>()

AttributeSource.HasAttributes

AttributeSource.HasAttribute<T>()

AttributeSource.GetAttribute<T>()

AttributeSource.ClearAttributes()

AttributeSource.CaptureState()

AttributeSource.RestoreState(AttributeSource.State)

AttributeSource.GetHashCode()

AttributeSource.Equals(object)

AttributeSource.ReflectAsString(bool)

AttributeSource.ReflectWith(IAttributeReflector)

AttributeSource.CloneAttributes()

AttributeSource.CopyTo(AttributeSource)

AttributeSource.ToString()

object.Equals(object, object)

object.GetType()

object.ReferenceEquals(object, object)

Namespace: Lucene.Net.Analysis

Assembly: Lucene.Net.TestFramework.dll

Syntax

public sealed class MockGraphTokenFilter : LookaheadTokenFilter<LookaheadTokenFilter.Position>, IDisposable

Constructors

MockGraphTokenFilter(Random, TokenStream)

Randomly inserts overlapped (posInc=0) tokens with posLength sometimes > 1. The chain must have an Lucene.Net.Analysis.TokenAttributes.IOffsetAttribute.

Declaration

public MockGraphTokenFilter(Random random, TokenStream input)

Parameters

Type	Name	Description
Random	random
TokenStream	input

Methods

AfterPosition()

This is called when all input tokens leaving a given position have been returned. Override this and call insertToken and then set whichever token's attributes you want, if you want to inject a token starting from this position.

Declaration

protected override void AfterPosition()

Overrides

LookaheadTokenFilter<LookaheadTokenFilter.Position>.AfterPosition()

Dispose(bool)

Releases resources associated with this stream.

If you override this method, always call base.Dispose(disposing), otherwise some internal state will not be correctly reset (e.g., Lucene.Net.Analysis.Tokenizer will throw InvalidOperationException on reuse).

NOTE: The default implementation chains the call to the input TokenStream, so be sure to call base.Dispose(disposing) when overriding this method.

Declaration

protected override void Dispose(bool disposing)

Parameters

Type	Name	Description
bool	disposing

Overrides

TokenFilter.Dispose(bool)

IncrementToken()

Consumers (i.e., Lucene.Net.Index.IndexWriter) use this method to advance the stream to the next token. Implementing classes must implement this method and update the appropriate Lucene.Net.Util.IAttributes with the attributes of the next token.

The producer must make no assumptions about the attributes after the method has been returned: the caller may arbitrarily change it. If the producer needs to preserve the state for subsequent calls, it can use Lucene.Net.Util.AttributeSource.CaptureState() to create a copy of the current attribute state.

this method is called for every token of a document, so an efficient implementation is crucial for good performance. To avoid calls to Lucene.Net.Util.AttributeSource.AddAttribute<T>() and Lucene.Net.Util.AttributeSource.GetAttribute<T>(), references to all Lucene.Net.Util.IAttributes that this stream uses should be retrieved during instantiation.

To ensure that filters and consumers know which attributes are available, the attributes must be added during instantiation. Filters and consumers are not required to check for availability of attributes in Lucene.Net.Analysis.TokenStream.IncrementToken().

Declaration

public override bool IncrementToken()

Returns

Type	Description
bool	false for end of stream; true otherwise

Overrides

LookaheadTokenFilter.IncrementToken()

Reset()

This method is called by a consumer before it begins consumption using Lucene.Net.Analysis.TokenStream.IncrementToken().

Resets this stream to a clean state. Stateful implementations must implement this method so that they can be reused, just as if they had been created fresh.

If you override this method, always call base.Reset(), otherwise some internal state will not be correctly reset (e.g., Lucene.Net.Analysis.Tokenizer will throw InvalidOperationException on further usage).

Declaration

public override void Reset()

Overrides

LookaheadTokenFilter<LookaheadTokenFilter.Position>.Reset()

Remarks

NOTE: The default implementation chains the call to the input Lucene.Net.Analysis.TokenStream, so be sure to call base.Reset() when overriding this method.

Implements

IDisposable