15 files changed, 21 insertions, 15 deletions
diff --git a/src/mongo/db/index/2d_access_method.cpp b/src/mongo/db/index/2d_access_method.cpp
index a4df454ab20..0e9e5265ee0 100644
--- a/src/mongo/db/index/2d_access_method.cpp
+++ b/src/mongo/db/index/2d_access_method.cpp
@@ -49,7 +49,7 @@ namespace mongo {
     }
 
     /** Finds the key objects to put in an index */
-    void TwoDAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) {
+    void TwoDAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) const {
         ExpressionKeysPrivate::get2DKeys(obj, _params, keys, NULL);
     }
 
diff --git a/src/mongo/db/index/2d_access_method.h b/src/mongo/db/index/2d_access_method.h
index eec59cbc6a3..21cbdf2947d 100644
--- a/src/mongo/db/index/2d_access_method.h
+++ b/src/mongo/db/index/2d_access_method.h
@@ -56,7 +56,7 @@ namespace mongo {
         // This really gets the 'locs' from the provided obj.
         void getKeys(const BSONObj& obj, std::vector<BSONObj>& locs) const;
 
-        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys);
+        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys) const;
 
         TwoDIndexingParams _params;
     };
diff --git a/src/mongo/db/index/btree_access_method.cpp b/src/mongo/db/index/btree_access_method.cpp
index dcd40fe386c..b3823c64ce1 100644
--- a/src/mongo/db/index/btree_access_method.cpp
+++ b/src/mongo/db/index/btree_access_method.cpp
@@ -65,7 +65,7 @@ namespace mongo {
         }
     }
 
-    void BtreeAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) {
+    void BtreeAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) const {
         _keyGenerator->getKeys(obj, keys);
     }
 
diff --git a/src/mongo/db/index/btree_access_method.h b/src/mongo/db/index/btree_access_method.h
index bb866694414..3ccc2fe11d2 100644
--- a/src/mongo/db/index/btree_access_method.h
+++ b/src/mongo/db/index/btree_access_method.h
@@ -56,7 +56,7 @@ namespace mongo {
         virtual ~BtreeAccessMethod() { }
 
     private:
-        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys);
+        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys) const;
 
         // Our keys differ for V0 and V1.
         boost::scoped_ptr<BtreeKeyGenerator> _keyGenerator;
diff --git a/src/mongo/db/index/btree_based_access_method.h b/src/mongo/db/index/btree_based_access_method.h
index d49d092f0f7..4b8c5f27b26 100644
--- a/src/mongo/db/index/btree_based_access_method.h
+++ b/src/mongo/db/index/btree_based_access_method.h
@@ -113,14 +113,11 @@ namespace mongo {
         virtual RecordId findSingle( OperationContext* txn, const BSONObj& key ) const;
 
     protected:
-        // Friends who need getKeys.
         friend class BtreeBasedBulkAccessMethod;
 
         // See below for body.
         class BtreeBasedPrivateUpdateData;
 
-        virtual void getKeys(const BSONObj &obj, BSONObjSet *keys) = 0;
-
         // Determines whether it's OK to ignore ErrorCodes::KeyTooLong for this OperationContext
         bool ignoreKeyTooLong(OperationContext* txn);
 
diff --git a/src/mongo/db/index/btree_based_bulk_access_method.h b/src/mongo/db/index/btree_based_bulk_access_method.h
index f683ec51aff..65a5715b353 100644
--- a/src/mongo/db/index/btree_based_bulk_access_method.h
+++ b/src/mongo/db/index/btree_based_bulk_access_method.h
@@ -137,6 +137,10 @@ namespace mongo {
 
         OperationContext* getOperationContext() { return _txn; }
 
+        virtual void getKeys(const BSONObj &obj, BSONObjSet *keys) const {
+            _real->getKeys(obj, keys);
+        }
+
     private:
         typedef Sorter<BSONObj, RecordId> BSONObjExternalSorter;
 
diff --git a/src/mongo/db/index/fts_access_method.cpp b/src/mongo/db/index/fts_access_method.cpp
index 4b8321e985c..cb136a1a5e7 100644
--- a/src/mongo/db/index/fts_access_method.cpp
+++ b/src/mongo/db/index/fts_access_method.cpp
@@ -34,7 +34,7 @@ namespace mongo {
     FTSAccessMethod::FTSAccessMethod(IndexCatalogEntry* btreeState, SortedDataInterface* btree )
         : BtreeBasedAccessMethod(btreeState, btree), _ftsSpec(btreeState->descriptor()->infoObj()) { }
 
-    void FTSAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) {
+    void FTSAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) const {
         ExpressionKeysPrivate::getFTSKeys(obj, _ftsSpec, keys);
     }
 
diff --git a/src/mongo/db/index/fts_access_method.h b/src/mongo/db/index/fts_access_method.h
index 8ca7a26afea..d538301b545 100644
--- a/src/mongo/db/index/fts_access_method.h
+++ b/src/mongo/db/index/fts_access_method.h
@@ -45,7 +45,7 @@ namespace mongo {
 
     private:
         // Implemented:
-        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys);
+        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys) const;
 
         fts::FTSSpec _ftsSpec;
     };
diff --git a/src/mongo/db/index/hash_access_method.cpp b/src/mongo/db/index/hash_access_method.cpp
index 175196d4570..9fb7347e72b 100644
--- a/src/mongo/db/index/hash_access_method.cpp
+++ b/src/mongo/db/index/hash_access_method.cpp
@@ -51,7 +51,7 @@ namespace mongo {
                                           &_hashedField);
     }
 
-    void HashAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) {
+    void HashAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) const {
         ExpressionKeysPrivate::getHashKeys(obj, _hashedField, _seed, _hashVersion, _descriptor->isSparse(), keys);
     }
 
diff --git a/src/mongo/db/index/hash_access_method.h b/src/mongo/db/index/hash_access_method.h
index 9b93574249e..fee946046b5 100644
--- a/src/mongo/db/index/hash_access_method.h
+++ b/src/mongo/db/index/hash_access_method.h
@@ -49,7 +49,7 @@ namespace mongo {
         virtual ~HashAccessMethod() { }
 
     private:
-        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys);
+        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys) const;
 
         // Only one of our fields is hashed.  This is the field name for it.
         std::string _hashedField;
diff --git a/src/mongo/db/index/haystack_access_method.cpp b/src/mongo/db/index/haystack_access_method.cpp
index 826bbc082fb..b4b337a6d74 100644
--- a/src/mongo/db/index/haystack_access_method.cpp
+++ b/src/mongo/db/index/haystack_access_method.cpp
@@ -61,7 +61,7 @@ namespace mongo {
         uassert(16774, "no non-geo fields specified", _otherFields.size());
     }
 
-    void HaystackAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) {
+    void HaystackAccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) const {
         ExpressionKeysPrivate::getHaystackKeys(obj, _geoField, _otherFields, _bucketSize, keys);
     }
 
diff --git a/src/mongo/db/index/haystack_access_method.h b/src/mongo/db/index/haystack_access_method.h
index 1d2820b3ff5..63b3548084e 100644
--- a/src/mongo/db/index/haystack_access_method.h
+++ b/src/mongo/db/index/haystack_access_method.h
@@ -68,7 +68,7 @@ namespace mongo {
                            BSONObjBuilder* result, unsigned limit);
 
     private:
-        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys);
+        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys) const;
 
         std::string _geoField;
         std::vector<std::string> _otherFields;
diff --git a/src/mongo/db/index/index_access_method.h b/src/mongo/db/index/index_access_method.h
index 6178de482f9..c1a87682d54 100644
--- a/src/mongo/db/index/index_access_method.h
+++ b/src/mongo/db/index/index_access_method.h
@@ -209,6 +209,11 @@ namespace mongo {
                                    bool mayInterrupt,
                                    bool dupsAllowed,
                                    std::set<RecordId>* dups ) = 0;
+
+        /**
+         * Fills 'keys' with the keys that should be generated for 'obj' on this index.
+         */
+        virtual void getKeys(const BSONObj &obj, BSONObjSet *keys) const = 0;
     };
 
     /**
diff --git a/src/mongo/db/index/s2_access_method.cpp b/src/mongo/db/index/s2_access_method.cpp
index 2c3aad34011..13f2ccee0fe 100644
--- a/src/mongo/db/index/s2_access_method.cpp
+++ b/src/mongo/db/index/s2_access_method.cpp
@@ -103,7 +103,7 @@ namespace mongo {
         return specObj;
     }
 
-    void S2AccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) {
+    void S2AccessMethod::getKeys(const BSONObj& obj, BSONObjSet* keys) const {
         ExpressionKeysPrivate::getS2Keys(obj, _descriptor->keyPattern(), _params, keys);
     }
 
diff --git a/src/mongo/db/index/s2_access_method.h b/src/mongo/db/index/s2_access_method.h
index 47b74823342..6954d8a4939 100644
--- a/src/mongo/db/index/s2_access_method.h
+++ b/src/mongo/db/index/s2_access_method.h
@@ -55,7 +55,7 @@ namespace mongo {
         static BSONObj fixSpec(const BSONObj& specObj);
 
     private:
-        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys);
+        virtual void getKeys(const BSONObj& obj, BSONObjSet* keys) const;
 
         S2IndexingParams _params;
     };