valuegepostlist.cc

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/* Copyright 2007,2008,2011,2013,2025,2026 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, see
 * <https://www.gnu.org/licenses/>.
 */
 
#include <config.h>
 
#include "valuegepostlist.h"
 
#include "estimateop.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();
        if (estimate_op) estimate_op->report_first(valuelist->get_docid());
    } else {
        valuelist->next();
    }
    while (!valuelist->at_end()) {
        const string & v = valuelist->get_value();
        if (v >= begin) {
            ++accepted;
            return NULL;
        }
        ++rejected;
        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) {
            ++accepted;
            return NULL;
        }
        ++rejected;
        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);
    if (valid)
        ++accepted;
    else
        ++rejected;
    return NULL;
}
 
string
ValueGePostList::get_description() const
{
    string desc = "ValueGePostList(";
    desc += str(slot);
    desc += ", ";
    description_append(desc, begin);
    desc += ")";
    return desc;
}