/** @file
 * @brief A PostList which iterates over all documents in a GlassDatabase.
 */
/* Copyright (C) 2006,2007,2008,2009,2024 Olly Betts
 * Copyright (C) 2008 Lemur Consulting Ltd
 *
 * 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 "glass_alldocspostlist.h"

#include <string>

#include "glass_database.h"
#include "debuglog.h"

#include "str.h"

using namespace std;
using Xapian::Internal::intrusive_ptr;

GlassAllDocsPostList::GlassAllDocsPostList(intrusive_ptr<const GlassDatabase> db_,
					   Xapian::doccount doccount)
	: GlassPostList(db_, {}, true)
{
    LOGCALL_CTOR(DB, "GlassAllDocsPostList", db_.get() | doccount);
    /* For an all documents postlist the term frequency is the number of
     * documents in the database.
     */
    termfreq = doccount;
}

Xapian::termcount
GlassAllDocsPostList::get_wdf() const
{
    LOGCALL(DB, Xapian::termcount, "GlassAllDocsPostList::get_wdf", NO_ARGS);
    AssertParanoid(!at_end());
    RETURN(1);
}

PositionList *
GlassAllDocsPostList::read_position_list()
{
    LOGCALL(DB, PositionList *, "GlassAllDocsPostList::read_position_list", NO_ARGS);
    throw Xapian::InvalidOperationError("GlassAllDocsPostList::read_position_list() not meaningful");
}

PositionList *
GlassAllDocsPostList::open_position_list() const
{
    LOGCALL(DB, PositionList *, "GlassAllDocsPostList::open_position_list", NO_ARGS);
    throw Xapian::InvalidOperationError("GlassAllDocsPostList::open_position_list() not meaningful");
}

string
GlassAllDocsPostList::get_description() const
{
    string desc = "GlassAllDocsPostList(doccount=";
    desc += str(termfreq);
    desc += ')';
    return desc;
}
