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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.
*/
namespace mongo {
class AndCommon {
public:
/**
* If src has any data dest doesn't, add that data to dest.
*/
static void mergeFrom(WorkingSetMember* dest, WorkingSetMember* src) {
verify(dest->hasLoc());
verify(src->hasLoc());
verify(dest->loc == src->loc);
// This is N^2 but N is probably pretty small. Easy enough to revisit.
// Merge key data.
for (size_t i = 0; i < src->keyData.size(); ++i) {
bool found = false;
for (size_t j = 0; j < dest->keyData.size(); ++j) {
if (dest->keyData[j].indexKeyPattern == src->keyData[i].indexKeyPattern) {
found = true;
break;
}
}
if (!found) { dest->keyData.push_back(src->keyData[i]); }
}
}
};
} // namespace mongo
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