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/**
* Copyright (C) 2015 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/index_entry.h"
#include "mongo/db/matcher/expression.h"
namespace mongo {
std::string IndexEntry::toString() const {
StringBuilder sb;
sb << "kp: " << keyPattern;
if (multikey) {
sb << " multikey";
}
if (sparse) {
sb << " sparse";
}
if (unique) {
sb << " unique";
}
sb << " name: '" << identifier << "'";
if (filterExpr) {
sb << " filterExpr: " << filterExpr->toString();
}
if (!infoObj.isEmpty()) {
sb << " io: " << infoObj;
}
return sb.str();
}
bool IndexEntry::pathHasMultikeyComponent(StringData indexedField) const {
if (multikeyPaths.empty()) {
// The index has no path-level multikeyness metadata.
return multikey;
}
size_t pos = 0;
for (auto&& key : keyPattern) {
if (key.fieldNameStringData() == indexedField) {
return !multikeyPaths[pos].empty();
}
++pos;
}
MONGO_UNREACHABLE;
}
std::ostream& operator<<(std::ostream& stream, const IndexEntry::Identifier& ident) {
stream << ident.toString();
return stream;
}
StringBuilder& operator<<(StringBuilder& builder, const IndexEntry::Identifier& ident) {
builder << ident.toString();
return builder;
}
} // namespace mongo
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