SERVER-533 Add aggregation stage to randomly sample documents

1 files changed, 12 insertions, 0 deletions

diff --git a/src/mongo/db/pipeline/document.h b/src/mongo/db/pipeline/document.h
index 5010f69b5fa..c6a100c954b 100644
--- a/src/mongo/db/pipeline/document.h
+++ b/src/mongo/db/pipeline/document.h
@@ -201,6 +201,14 @@ public:
         return storage().getTextScore();
     }
 
+    static const StringData metaFieldRandVal;  // "$randVal"
+    bool hasRandMetaField() const {
+        return storage().hasRandMetaField();
+    }
+    int64_t getRandMetaField() const {
+        return storage().getRandMetaField();
+    }
+
     /// members for Sorter
     struct SorterDeserializeSettings {};  // unused
     void serializeForSorter(BufBuilder& buf) const;
@@ -421,6 +429,10 @@ public:
         storage().setTextScore(score);
     }
 
+    void setRandMetaField(int64_t val) {
+        storage().setRandMetaField(val);
+    }
+
     /** Convert to a read-only document and release reference.
      *
      *  Call this to indicate that you are done with this Document and will