SERVER-19456 Use final designators where appropriate in PlanStages

1 files changed, 11 insertions, 13 deletions

diff --git a/src/mongo/db/exec/index_scan.h b/src/mongo/db/exec/index_scan.h
index 5ae2319800c..aae3d54ec4c 100644
--- a/src/mongo/db/exec/index_scan.h
+++ b/src/mongo/db/exec/index_scan.h
@@ -70,7 +70,7 @@ struct IndexScanParams {
  *
  * Sub-stage preconditions: None.  Is a leaf and consumes no stage data.
  */
-class IndexScan : public PlanStage {
+class IndexScan final : public PlanStage {
 public:
     /**
      * Keeps track of what this index scan is currently doing so that it
@@ -95,23 +95,21 @@ public:
               WorkingSet* workingSet,
               const MatchExpression* filter);
 
-    virtual ~IndexScan() {}
+    StageState work(WorkingSetID* out) final;
+    bool isEOF() final;
+    void doSaveState() final;
+    void doRestoreState() final;
+    void doDetachFromOperationContext() final;
+    void doReattachToOperationContext(OperationContext* opCtx) final;
+    void doInvalidate(OperationContext* txn, const RecordId& dl, InvalidationType type) final;
 
-    virtual StageState work(WorkingSetID* out);
-    virtual bool isEOF();
-    virtual void doSaveState();
-    virtual void doRestoreState();
-    virtual void doDetachFromOperationContext();
-    virtual void doReattachToOperationContext(OperationContext* opCtx);
-    virtual void doInvalidate(OperationContext* txn, const RecordId& dl, InvalidationType type);
-
-    virtual StageType stageType() const {
+    StageType stageType() const final {
         return STAGE_IXSCAN;
     }
 
-    virtual std::unique_ptr<PlanStageStats> getStats();
+    std::unique_ptr<PlanStageStats> getStats() final;
 
-    virtual const SpecificStats* getSpecificStats() const;
+    const SpecificStats* getSpecificStats() const final;
 
     static const char* kStageType;