SERVER-17364 Unify handling of child stages into PlanStage base class

This is prep for adding more methods that need to propagate to children.

1 files changed, 1 insertions, 11 deletions

diff --git a/src/mongo/db/exec/delete.h b/src/mongo/db/exec/delete.h
index ab907557bc7..76f6afdb123 100644
--- a/src/mongo/db/exec/delete.h
+++ b/src/mongo/db/exec/delete.h
@@ -85,16 +85,11 @@ public:
                 WorkingSet* ws,
                 Collection* collection,
                 PlanStage* child);
-    virtual ~DeleteStage();
 
     virtual bool isEOF();
     virtual StageState work(WorkingSetID* out);
 
-    virtual void saveState();
-    virtual void restoreState(OperationContext* opCtx);
-    virtual void invalidate(OperationContext* txn, const RecordId& dl, InvalidationType type);
-
-    virtual std::vector<PlanStage*> getChildren() const;
+    virtual void doRestoreState(OperationContext* opCtx);
 
     virtual StageType stageType() const {
         return STAGE_DELETE;
@@ -102,8 +97,6 @@ public:
 
     virtual std::unique_ptr<PlanStageStats> getStats();
 
-    virtual const CommonStats* getCommonStats() const;
-
     virtual const SpecificStats* getSpecificStats() const;
 
     static const char* kStageType;
@@ -129,8 +122,6 @@ private:
     // stage.
     Collection* _collection;
 
-    std::unique_ptr<PlanStage> _child;
-
     // If not WorkingSet::INVALID_ID, we use this rather than asking our child what to do next.
     WorkingSetID _idRetrying;
 
@@ -138,7 +129,6 @@ private:
     WorkingSetID _idReturning;
 
     // Stats
-    CommonStats _commonStats;
     DeleteStats _specificStats;
 };