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    Class RemoveDuplicatesTokenFilter

    A TokenFilter which filters out Tokens at the same position and Term text as the previous token in the stream.

    Inheritance
    System.Object
    AttributeSource
    TokenStream
    TokenFilter
    RemoveDuplicatesTokenFilter
    Implements
    IDisposable
    Inherited Members
    TokenFilter.m_input
    TokenFilter.End()
    TokenFilter.Dispose(Boolean)
    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(Boolean)
    AttributeSource.ReflectWith(IAttributeReflector)
    AttributeSource.CloneAttributes()
    AttributeSource.CopyTo(AttributeSource)
    AttributeSource.ToString()
    Namespace: Lucene.Net.Analysis.Miscellaneous
    Assembly: Lucene.Net.Analysis.Common.dll
    Syntax
    public sealed class RemoveDuplicatesTokenFilter : TokenFilter, IDisposable

    Constructors

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    RemoveDuplicatesTokenFilter(TokenStream)

    Creates a new RemoveDuplicatesTokenFilter

    Declaration
    public RemoveDuplicatesTokenFilter(TokenStream in)
    Parameters
    Type Name Description
    TokenStream in

    TokenStream that will be filtered

    Methods

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    IncrementToken()

    Consumers (i.e., IndexWriter) use this method to advance the stream to the next token. Implementing classes must implement this method and update the appropriate 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 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 AddAttribute<T>() and GetAttribute<T>(), references to all 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 IncrementToken().

    Declaration
    public override sealed bool IncrementToken()
    Returns
    Type Description
    System.Boolean

    false for end of stream; true otherwise

    Overrides
    TokenStream.IncrementToken()
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    Reset()

    This method is called by a consumer before it begins consumption using 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., Tokenizer will throw on further usage).

    Declaration
    public override void Reset()
    Overrides
    TokenFilter.Reset()

    Implements

    IDisposable
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