StopFilter.h

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// Copyright (c) 2009-2014 Alan Wright. All rights reserved.
// Distributable under the terms of either the Apache License (Version 2.0)
// or the GNU Lesser General Public License.
 
#ifndef STOPFILTER_H
#define STOPFILTER_H
 
#include "TokenFilter.h"
 
namespace Lucene {

class LPPAPI StopFilter : public TokenFilter {
public:
    StopFilter(bool enablePositionIncrements, const TokenStreamPtr& input, HashSet<String> stopWords, bool ignoreCase = false);
    StopFilter(bool enablePositionIncrements, const TokenStreamPtr& input, const CharArraySetPtr& stopWords, bool ignoreCase = false);
 
    virtual ~StopFilter();
 
    LUCENE_CLASS(StopFilter);
 
protected:
    CharArraySetPtr stopWords;
    bool enablePositionIncrements;
 
    TermAttributePtr termAtt;
    PositionIncrementAttributePtr posIncrAtt;
 
public:
    static HashSet<String> makeStopSet(Collection<String> stopWords);

    virtual bool incrementToken();

    static bool getEnablePositionIncrementsVersionDefault(LuceneVersion::Version matchVersion);

    bool getEnablePositionIncrements();

    void setEnablePositionIncrements(bool enable);
};
 
}
 
#endif