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path: root/src/mongo/db/index_names.cpp
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/**
*    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/index_names.h"

#include "mongo/db/jsobj.h"

namespace mongo {

    using std::string;

    const string IndexNames::GEO_2D = "2d";
    const string IndexNames::GEO_HAYSTACK = "geoHaystack";
    const string IndexNames::GEO_2DSPHERE = "2dsphere";
    const string IndexNames::TEXT = "text";
    const string IndexNames::HASHED = "hashed";
    const string IndexNames::BTREE = "";

    // static
    string IndexNames::findPluginName(const BSONObj& keyPattern) {
        BSONObjIterator i(keyPattern);

        while (i.more()) {
            BSONElement e = i.next();
            if (String != e.type()) { continue; }
            return e.String();
        }

        return IndexNames::BTREE;
    }

    // static
    bool IndexNames::existedBefore24(const string& name) {
        return name == IndexNames::BTREE
            || name == IndexNames::GEO_2D
            || name == IndexNames::GEO_HAYSTACK
            || name == IndexNames::HASHED;
    }

    // static
    bool IndexNames::isKnownName(const string& name) {
        return    name == IndexNames::GEO_2D
               || name == IndexNames::GEO_2DSPHERE
               || name == IndexNames::GEO_HAYSTACK
               || name == IndexNames::TEXT
               || name == IndexNames::HASHED
               || name == IndexNames::BTREE;
    }

    // static
    IndexType IndexNames::nameToType(const string& accessMethod) {
        if (IndexNames::GEO_2D == accessMethod) {
            return INDEX_2D;
        }
        else if (IndexNames::GEO_HAYSTACK == accessMethod) {
            return INDEX_HAYSTACK;
        }
        else if (IndexNames::GEO_2DSPHERE == accessMethod) {
            return INDEX_2DSPHERE;
        }
        else if (IndexNames::TEXT == accessMethod) {
            return INDEX_TEXT;
        }
        else if (IndexNames::HASHED == accessMethod) {
            return INDEX_HASHED;
        }
        else {
            return INDEX_BTREE;
        }
    }

}  // namespace mongo