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/** @file valuegepostlist.cc
* @brief Return document ids matching a range test on a specified doc value.
*/
/* Copyright 2007,2008,2011,2013 Olly Betts
* Copyright 2008 Lemur Consulting Ltd
* Copyright 2010 Richard Boulton
*
* 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 "valuegepostlist.h"
#include "omassert.h"
#include "str.h"
#include "unicode/description_append.h"
using namespace std;
PostList *
ValueGePostList::next(double)
{
Assert(db);
if (!valuelist) valuelist = db->open_value_list(slot);
valuelist->next();
while (!valuelist->at_end()) {
const string & v = valuelist->get_value();
if (v >= begin) return NULL;
valuelist->next();
}
db = NULL;
return NULL;
}
PostList *
ValueGePostList::skip_to(Xapian::docid did, double)
{
Assert(db);
if (!valuelist) valuelist = db->open_value_list(slot);
valuelist->skip_to(did);
while (!valuelist->at_end()) {
const string & v = valuelist->get_value();
if (v >= begin) return NULL;
valuelist->next();
}
db = NULL;
return NULL;
}
PostList *
ValueGePostList::check(Xapian::docid did, double, bool &valid)
{
Assert(db);
AssertRelParanoid(did, <=, db->get_lastdocid());
if (!valuelist) valuelist = db->open_value_list(slot);
valid = valuelist->check(did);
if (!valid) {
return NULL;
}
const string & v = valuelist->get_value();
valid = (v >= begin);
return NULL;
}
string
ValueGePostList::get_description() const
{
string desc = "ValueGePostList(";
desc += str(slot);
desc += ", ";
description_append(desc, begin);
desc += ")";
return desc;
}
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