synonympostlist.h

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/* Copyright 2007,2009 Lemur Consulting Ltd
 * Copyright 2009,2011,2014,2017,2018,2024 Olly Betts
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see
 * <https://www.gnu.org/licenses/>.
 */
 
#ifndef XAPIAN_INCLUDED_SYNONYMPOSTLIST_H
#define XAPIAN_INCLUDED_SYNONYMPOSTLIST_H
 
#include "wrapperpostlist.h"
 
#include "backends/databaseinternal.h"
 
class PostListTree;
 
class SynonymPostList : public WrapperPostList {
    const Xapian::Weight* wt = nullptr;
 
    bool want_wdf = false;
 
    bool want_wdfdocmax = false;
 
    bool needs_doclen;
 
    PostListTree* pltree;
 
  public:
    SynonymPostList(PostList * subtree,
                    PostListTree* pltree_,
                    bool needs_doclen_)
        : WrapperPostList(subtree),
          needs_doclen(needs_doclen_),
          pltree(pltree_) { }
 
    ~SynonymPostList();
 
    void set_weight(const Xapian::Weight * wt_);
 
    PostList *next(double w_min);
    PostList *skip_to(Xapian::docid did, double w_min);
 
    double get_weight(Xapian::termcount doclen,
                      Xapian::termcount unique_terms,
                      Xapian::termcount wdfdocmax) const;
    double recalc_maxweight();
 
    Xapian::termcount count_matching_subqs() const;
 
    std::string get_description() const;
};
 
#endif /* XAPIAN_INCLUDED_SYNONYMPOSTLIST_H */