diff options
Diffstat (limited to 'src/mongo/db/exec/projection_node.cpp')
| -rw-r--r-- | src/mongo/db/exec/projection_node.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/mongo/db/exec/projection_node.cpp b/src/mongo/db/exec/projection_node.cpp index 00fcf70946f..bbd2ebcac6b 100644 --- a/src/mongo/db/exec/projection_node.cpp +++ b/src/mongo/db/exec/projection_node.cpp @@ -48,7 +48,8 @@ void ProjectionNode::addProjectionForPath(const FieldPath& path) { void ProjectionNode::_addProjectionForPath(const FieldPath& path) { makeOptimizationsStale(); if (path.getPathLength() == 1) { - _projectedFields.insert(path.fullPath()); + auto it = _projectedFields.insert(_projectedFields.end(), path.fullPath()); + _projectedFieldsSet.insert(StringData(*it)); return; } // FieldPath can't be empty, so it is safe to obtain the first path component here. @@ -141,7 +142,7 @@ void ProjectionNode::applyProjections(const Document& inputDoc, MutableDocument* while (it.more()) { auto fieldName = it.fieldName(); - if (_projectedFields.find(fieldName) != _projectedFields.end()) { + if (_projectedFieldsSet.find(fieldName) != _projectedFieldsSet.end()) { outputProjectedField( fieldName, applyLeafProjectionToValue(it.next().second), outputDoc); ++projectedFields; @@ -280,7 +281,7 @@ void ProjectionNode::serialize(boost::optional<ExplainOptions::Verbosity> explai const bool projVal = !applyLeafProjectionToValue(Value(true)).missing(); // Always put "_id" first if it was projected (implicitly or explicitly). - if (_projectedFields.find("_id") != _projectedFields.end()) { + if (_projectedFieldsSet.find("_id") != _projectedFieldsSet.end()) { output->addField("_id", Value(projVal)); } |