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/** @file flint_alldocspostlist.h
* @brief A PostList which iterates over all documents in a FlintDatabase.
*/
/* Copyright (C) 2006,2007,2008,2009 Olly Betts
* Copyright (C) 2009 Lemur Consulting Ltd
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef XAPIAN_INCLUDED_FLINT_ALLDOCSPOSTLIST_H
#define XAPIAN_INCLUDED_FLINT_ALLDOCSPOSTLIST_H
#include <string>
#include "autoptr.h"
#include "flint_database.h"
#include "leafpostlist.h"
class FlintCursor;
class FlintAllDocsPostList : public LeafPostList {
/// Don't allow assignment.
void operator=(const FlintAllDocsPostList &);
/// Don't allow copying.
FlintAllDocsPostList(const FlintAllDocsPostList &);
/// Set @a current_did from @a cursor->current_key.
PostList * read_did_from_current_key();
/// The database we're iterating over.
Xapian::Internal::RefCntPtr<const FlintDatabase> db;
/// The number of documents in the database.
Xapian::doccount doccount;
/// Cursor running over termlist table keys.
AutoPtr<FlintCursor> cursor;
/// The current document id.
Xapian::docid current_did;
public:
FlintAllDocsPostList(Xapian::Internal::RefCntPtr<const FlintDatabase> db_,
Xapian::doccount doccount_)
: LeafPostList(std::string()),
db(db_), doccount(doccount_), cursor(db->termlist_table.cursor_get()),
current_did(0)
{
cursor->find_entry(std::string());
}
Xapian::doccount get_termfreq() const;
Xapian::docid get_docid() const;
Xapian::termcount get_doclength() const;
Xapian::termcount get_wdf() const;
PostList * next(Xapian::weight w_min);
PostList * skip_to(Xapian::docid desired_did, Xapian::weight w_min);
bool at_end() const;
std::string get_description() const;
};
#endif // XAPIAN_INCLUDED_FLINT_ALLDOCSPOSTLIST_H
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