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// collection.h
/**
* Copyright (C) 2012 10gen Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the GNU Affero General Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <string>
#include "mongo/base/string_data.h"
#include "mongo/db/diskloc.h"
#include "mongo/db/exec/collection_scan_common.h"
namespace mongo {
class Database;
class ExtentManager;
class NamespaceDetails;
class CollectionIterator;
class FlatIterator;
class CappedIterator;
/**
* this is NOT safe through a yield right now
* not sure if it will be, or what yet
*/
class CollectionTemp {
public:
CollectionTemp( const StringData& fullNS,
NamespaceDetails* details,
Database* database );
~CollectionTemp();
bool ok() const { return _magic == 1357924; }
StringData ns() const { return _ns; }
CollectionIterator* getIterator( const DiskLoc& start, bool tailable,
const CollectionScanParams::Direction& dir) const;
private:
ExtentManager* getExtentManager();
const ExtentManager* getExtentManager() const;
int _magic;
std::string _ns;
NamespaceDetails* _details;
Database* _database;
friend class Database;
friend class FlatIterator;
friend class CappedIterator;
};
}
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