snowballfilter.h

lucene in java大家一定听说过了

#ifndef _lucene_analysis_snowball_filter_
#define _lucene_analysis_snowball_filter_

#if defined(_LUCENE_PRAGMA_ONCE)
# pragma once
#endif

#include "CLucene/util/Reader.h"
#include "CLucene/analysis/AnalysisHeader.h"
#include "CLucene/util/Misc.h"
#include "libstemmer.h"

CL_NS_DEF2(analysis,snowball)

/** A filter that stems words using a Snowball-generated stemmer.
 *
 * Available stemmers are listed in {@link net.sf.snowball.ext}.  The name of a
 * stemmer is the part of the class name before "Stemmer", e.g., the stemmer in
 * {@link EnglishStemmer} is named "English".
 *
 * Note: todo: This is not thread safe...
 */
class SnowballFilter: public TokenFilter {
	struct sb_stemmer * stemmer;
public:

  /** Construct the named stemming filter.
   *
   * @param in the input tokens to stem
   * @param name the name of a stemmer
   */
	SnowballFilter(TokenStream* in, const TCHAR* language, bool deleteTS);

	~SnowballFilter();

    /** Returns the next input Token, after being stemmed */
    bool next(Token* token);
};

CL_NS_END2
#endif