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Class Description
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An Analyzer builds TokenStreams, which analyze text. It thus represents a
policy for extracting index terms from text.
Typical implementations first build a Tokenizer, which breaks the stream of
characters from the Reader into raw Tokens. One or more TokenFilters may
then be applied to the output of the Tokenizer.
WARNING: You must override one of the methods defined by this class in your
subclass or the Analyzer will enter an infinite loop.
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Class Variables
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None declared in this class.
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Instance Variables
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None declared in this class.
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Constructors
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Analyzer
public Analyzer(
)
No description available for this constructor.
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Class Methods
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None declared in this class.
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Instance Methods
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tokenStream
public TokenStream tokenStream(
Reader reader
)
Creates a TokenStream which tokenizes all the text in the provided
Reader. Provided for backward compatibility only.
tokenStream
public TokenStream tokenStream(
String fieldName,
Reader reader
)
Creates a TokenStream which tokenizes all the text in the provided
Reader. Default implementation forwards to tokenStream(Reader) for
compatibility with older version. Override to allow Analyzer to choose
strategy based on document and/or field. Must be able to handle null
field name for backward compatibility.
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