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/** @file net_postlist.cc
* @brief Postlists for remote databases
*/
/* Copyright (C) 2007 Lemur Consulting Ltd
* Copyright (C) 2007,2008,2009,2011,2012,2013,2015 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
*/
#include <config.h>
#include "net_postlist.h"
#include "net/length.h"
#include "unicode/description_append.h"
using namespace std;
Xapian::doccount
NetworkPostList::get_termfreq() const
{
return termfreq;
}
Xapian::docid
NetworkPostList::get_docid() const
{
return lastdocid;
}
Xapian::termcount
NetworkPostList::get_doclength() const
{
return db->get_doclength(lastdocid);
}
Xapian::termcount
NetworkPostList::get_unique_terms() const
{
return db->get_unique_terms(lastdocid);
}
Xapian::termcount
NetworkPostList::get_wdf() const
{
return lastwdf;
}
PositionList *
NetworkPostList::read_position_list()
{
lastposlist = db->open_position_list(lastdocid, term);
return lastposlist.get();
}
PositionList *
NetworkPostList::open_position_list() const
{
return db->open_position_list(lastdocid, term);
}
PostList *
NetworkPostList::next(double)
{
if (!started) {
started = true;
pos = postings.data();
pos_end = pos + postings.size();
lastdocid = 0;
}
if (pos == pos_end) {
pos = NULL;
} else {
Xapian::docid inc;
decode_length(&pos, pos_end, inc);
lastdocid += inc + 1;
decode_length(&pos, pos_end, lastwdf);
}
return NULL;
}
PostList *
NetworkPostList::skip_to(Xapian::docid did, double min_weight)
{
if (!started)
next(min_weight);
while (pos && lastdocid < did)
next(min_weight);
return NULL;
}
bool
NetworkPostList::at_end() const
{
return (pos == NULL && started);
}
string
NetworkPostList::get_description() const
{
string desc = "NetworkPostList(";
description_append(desc, term);
desc += ')';
return desc;
}
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