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Java Source Code / Java Documentation » Parser » JTopas » de.susebox.jtopas.spi

Source Cross Reference Class Diagram Java Document (Java Doc)

de.susebox.jtopas.spi .KeywordHandler

All known Subclasses:   de.susebox.jtopas.spi .StandardKeywordHandler,  de.susebox.jtopas.impl .SequenceStore,
KeywordHandler
public interface KeywordHandler (Code)

This interface must be implemented by classes that should be used as a keyword handler for a de.susebox.jtopas.Tokenizer .

See Also:   de.susebox.jtopas.Tokenizer
See Also:   de.susebox.jtopas.TokenizerProperties
See Also:   de.susebox.jtopas.spi.DataMapper
author:
   Heiko Blau

Method Summary
public boolean hasKeywords()
     This method can be used by a de.susebox.jtopas.Tokenizer implementation for a fast detection if keyword matching must be performed at all.
public TokenizerProperty isKeyword(DataProvider dataProvider)
     This method checks if the character range given through the DataProvider comprises a keyword.

Method Detail
hasKeywords
public boolean hasKeywords()(Code)
This method can be used by a de.susebox.jtopas.Tokenizer implementation for a fast detection if keyword matching must be performed at all. If the method returns false time-consuming preparations can be skipped. true if there actually are pattern that can be testedfor a match, false otherwise.

isKeyword
public TokenizerProperty isKeyword(DataProvider dataProvider) throws TokenizerException, NullPointerException(Code)
This method checks if the character range given through the DataProvider comprises a keyword. An implementation should use a de.susebox.jtopas.TokenizerException to report problems.
Parameters:
  dataProvider - the source to get the data from, that are checked a de.susebox.jtopas.TokenizerProperty if a keyword could be found, null otherwise
throws:
  TokenizerException - generic exception
throws:
  NullPointerException - if no DataProvider is given

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