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// count.h
/**
* Copyright (C) 2008 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/>.
*/
#include "../jsobj.h"
#include "../diskloc.h"
namespace mongo {
/**
* { count: "collectionname"[, query: <query>] }
* @return -1 on ns does not exist error and other errors, 0 on other errors, otherwise the match count.
*/
long long runCount(const char *ns, const BSONObj& cmd, string& err);
} // namespace mongo
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