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/**
* Copyright (C) 2013-2014 MongoDB 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.
*/
#include "mongo/platform/basic.h"
#include "mongo/db/query/explain_common.h"
#include "mongo/util/mongoutils/str.h"
namespace mongo {
// static
const char* ExplainCommon::verbosityString(ExplainCommon::Verbosity verbosity) {
switch (verbosity) {
case QUERY_PLANNER:
return "queryPlanner";
case EXEC_STATS:
return "executionStats";
case EXEC_ALL_PLANS:
return "allPlansExecution";
default:
invariant(0);
return "unknown";
}
}
// static
Status ExplainCommon::parseCmdBSON(const BSONObj& cmdObj, ExplainCommon::Verbosity* verbosity) {
if (Object != cmdObj.firstElement().type()) {
return Status(ErrorCodes::BadValue, "explain command requires a nested object");
}
*verbosity = ExplainCommon::EXEC_ALL_PLANS;
if (!cmdObj["verbosity"].eoo()) {
const char* verbStr = cmdObj["verbosity"].valuestrsafe();
if (mongoutils::str::equals(verbStr, "queryPlanner")) {
*verbosity = ExplainCommon::QUERY_PLANNER;
}
else if (mongoutils::str::equals(verbStr, "executionStats")) {
*verbosity = ExplainCommon::EXEC_STATS;
}
else if (!mongoutils::str::equals(verbStr, "allPlansExecution")) {
return Status(ErrorCodes::BadValue, "verbosity string must be one of "
"{'queryPlanner', 'executionStats', 'allPlansExecution'}");
}
}
return Status::OK();
}
} // namespace mongo
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