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-rw-r--r--src/mongo/db/pipeline/expression.cpp11
1 files changed, 8 insertions, 3 deletions
diff --git a/src/mongo/db/pipeline/expression.cpp b/src/mongo/db/pipeline/expression.cpp
index d86b50c527a..f7b723798f5 100644
--- a/src/mongo/db/pipeline/expression.cpp
+++ b/src/mongo/db/pipeline/expression.cpp
@@ -2806,9 +2806,14 @@ Value ExpressionMeta::evaluate(const Document& root, Variables* variables) const
// Be sure that a RecordId can be represented by a long long.
static_assert(RecordId::kMinRepr >= std::numeric_limits<long long>::min());
static_assert(RecordId::kMaxRepr <= std::numeric_limits<long long>::max());
- return metadata.hasRecordId()
- ? Value{static_cast<long long>(metadata.getRecordId().as<int64_t>())}
- : Value();
+ if (!metadata.hasRecordId()) {
+ return Value();
+ }
+
+ return metadata.getRecordId().withFormat(
+ [](RecordId::Null n) { return Value(); },
+ [](const int64_t rid) { return Value{static_cast<long long>(rid)}; },
+ [](const OID& oid) { return Value(oid); });
case MetaType::kIndexKey:
return metadata.hasIndexKey() ? Value(metadata.getIndexKey()) : Value();
case MetaType::kSortKey: