CLucene - a full-featured, c++ search engine
API Documentation

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PrefixQuery.h

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/*------------------------------------------------------------------------------
* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
* 
* Distributable under the terms of either the Apache License (Version 2.0) or 
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#ifndef _lucene_search_PrefixQuery
#define _lucene_search_PrefixQuery
#if defined(_LUCENE_PRAGMA_ONCE)
# pragma once
#endif

#include "CLucene/index/Term.h"
#include "CLucene/index/Terms.h"
#include "CLucene/index/IndexReader.h"
#include "SearchHeader.h"
#include "BooleanQuery.h"
#include "TermQuery.h"
#include "CLucene/util/StringBuffer.h"

CL_NS_DEF(search) 
        //PrefixQuery is a Query that matches documents containing terms with a specified prefix.

        class PrefixQuery: public Query {
        private:
                CL_NS(index)::Term* prefix;
        protected:
                PrefixQuery(const PrefixQuery& clone);
        public:

                //Constructor. Constructs a query for terms starting with prefix
                PrefixQuery(CL_NS(index)::Term* Prefix);

                //Destructor
                ~PrefixQuery();

                //Returns the name "PrefixQuery"
                const TCHAR* getQueryName() const;
                static const TCHAR* getClassName();

                CL_NS(index)::Term* getPrefix(bool pointer=true);

                Query* combine(Query** queries);
                Query* rewrite(CL_NS(index)::IndexReader* reader);
                Query* clone() const;
                bool equals(Query * other) const;

                //Creates a user-readable version of this query and returns it as as string
                TCHAR* toString(const TCHAR* field) const;

                size_t hashCode() const;
        };
        
        
    class PrefixFilter: public Filter 
    {
    private:
        CL_NS(index)::Term* prefix;
    protected:
        PrefixFilter( const PrefixFilter& copy );
        
    public:
        PrefixFilter(CL_NS(index)::Term* prefix);
        ~PrefixFilter();
    
        CL_NS(util)::BitSet* bits( CL_NS(index)::IndexReader* reader );
        
        Filter* clone() const;
        TCHAR* toString();
    };
CL_NS_END
#endif

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