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/** @file postlist.cc
* @brief Abstract base class for postlists.
*/
/* Copyright (C) 2007,2009,2011,2015,2017 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 "postlist.h"
#include <xapian/error.h>
#include "omassert.h"
using namespace std;
namespace Xapian {
PostingIterator::Internal::~Internal() { }
TermFreqs
PostingIterator::Internal::get_termfreq_est_using_stats(
const Xapian::Weight::Internal &) const
{
throw Xapian::InvalidOperationError(
"get_termfreq_est_using_stats() not meaningful for this PostingIterator");
}
Xapian::termcount
PostingIterator::Internal::get_wdf() const
{
throw Xapian::InvalidOperationError("get_wdf() not meaningful for this PostingIterator");
}
const string *
PostingIterator::Internal::get_sort_key() const
{
return NULL;
}
const string *
PostingIterator::Internal::get_collapse_key() const
{
return NULL;
}
PositionList *
PostList::read_position_list()
{
throw Xapian::UnimplementedError("OP_NEAR and OP_PHRASE only currently support leaf subqueries");
}
PositionList *
PostList::open_position_list() const
{
throw Xapian::InvalidOperationError("open_position_list() not meaningful for this PostingIterator");
}
PostList *
PostList::check(Xapian::docid did, double w_min, bool &valid)
{
valid = true;
return skip_to(did, w_min);
}
Xapian::termcount
PostList::count_matching_subqs() const
{
Assert(false);
return 0;
}
void
PostList::gather_position_lists(OrPositionList*)
{
Assert(false);
}
}
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