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// match_details.cpp

/**
*    Copyright (C) 2013 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.
*/

#include "mongo/db/matcher/match_details.h"

#include <sstream>

#include "mongo/util/assert_util.h"

namespace mongo {

using std::string;

MatchDetails::MatchDetails() : _elemMatchKeyRequested() {
    resetOutput();
}

void MatchDetails::resetOutput() {
    _loadedRecord = false;
    _elemMatchKey.reset();
}

bool MatchDetails::hasElemMatchKey() const {
    return _elemMatchKey.get();
}

std::string MatchDetails::elemMatchKey() const {
    verify(hasElemMatchKey());
    return *(_elemMatchKey.get());
}

void MatchDetails::setElemMatchKey(const std::string& elemMatchKey) {
    if (_elemMatchKeyRequested) {
        _elemMatchKey.reset(new std::string(elemMatchKey));
    }
}

string MatchDetails::toString() const {
    std::stringstream ss;
    ss << "loadedRecord: " << _loadedRecord << " ";
    ss << "elemMatchKeyRequested: " << _elemMatchKeyRequested << " ";
    ss << "elemMatchKey: " << (_elemMatchKey ? _elemMatchKey->c_str() : "NONE") << " ";
    return ss.str();
}
}