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/** @file glass_termlisttable.h
* @brief Subclass of GlassTable which holds termlists.
*/
/* Copyright (C) 2007,2008,2009,2010,2013,2014,2015,2016 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef XAPIAN_INCLUDED_GLASS_TERMLISTTABLE_H
#define XAPIAN_INCLUDED_GLASS_TERMLISTTABLE_H
#include <xapian/constants.h>
#include <xapian/types.h>
#include "glass_table.h"
#include "pack.h"
#include <string>
namespace Xapian {
class Document;
}
class GlassTermListTable : public GlassTable {
public:
static std::string make_key(Xapian::docid did) {
std::string key;
pack_uint_preserving_sort(key, did);
return key;
}
/** Create a new GlassTermListTable object.
*
* This method does not create or open the table on disk - you
* must call the create() or open() methods respectively!
*
* @param dbdir The directory the glass database is stored in.
* @param readonly true if we're opening read-only, else false.
* @param lazy_ Don't create a termlist if there isn't one.
*/
GlassTermListTable(const std::string & dbdir, bool readonly, bool lazy_)
: GlassTable("termlist", dbdir + "/termlist.", readonly, lazy_) { }
GlassTermListTable(int fd, off_t offset_, bool readonly, bool lazy_)
: GlassTable("termlist", fd, offset_, readonly, lazy_) { }
/** Set the termlist data for document @a did.
*
* Any existing data is replaced.
*
* @param did The docid to set the termlist data for.
* @param doc The Xapian::Document object to read term data from.
* @param doclen The document length.
*/
void set_termlist(Xapian::docid did, const Xapian::Document & doc,
Xapian::termcount doclen);
/** Delete the termlist data for document @a did.
*
* @param did The docid to delete the termlist data for.
*/
void delete_termlist(Xapian::docid did) { del(make_key(did)); }
};
#endif // XAPIAN_INCLUDED_GLASS_TERMLISTTABLE_H
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