SERVER-10026 push access method name into index descriptor, pay attention to it in planning

1 files changed, 42 insertions, 1 deletions

diff --git a/src/mongo/db/index_names.cpp b/src/mongo/db/index_names.cpp
index 9f0cace9d10..d3f79886e36 100644
--- a/src/mongo/db/index_names.cpp
+++ b/src/mongo/db/index_names.cpp
@@ -37,6 +37,7 @@ namespace mongo {
     const string IndexNames::GEO_2DSPHERE = "2dsphere";
     const string IndexNames::TEXT = "text";
     const string IndexNames::HASHED = "hashed";
+    const string IndexNames::BTREE = "";
 
     // static
     string IndexNames::findPluginName(const BSONObj& keyPattern) {
@@ -48,7 +49,47 @@ namespace mongo {
             return e.String();
         }
 
-        return "";
+        return IndexNames::BTREE;
+    }
+
+    // static
+    bool IndexNames::existedBefore24(const string& name) {
+        return name == IndexNames::BTREE
+            || name == IndexNames::GEO_2D
+            || name == IndexNames::GEO_HAYSTACK
+            || name == IndexNames::HASHED;
+    }
+
+    // static
+    bool IndexNames::isKnownName(const string& name) {
+        return    name == IndexNames::GEO_2D
+               || name == IndexNames::GEO_2DSPHERE
+               || name == IndexNames::GEO_HAYSTACK
+               || name == IndexNames::TEXT
+               || name == IndexNames::HASHED
+               || name == IndexNames::BTREE;
+    }
+
+    // static
+    IndexType IndexNames::nameToType(const string& accessMethod) {
+        if (IndexNames::GEO_2D == accessMethod) {
+            return INDEX_2D;
+        }
+        else if (IndexNames::GEO_HAYSTACK == accessMethod) {
+            return INDEX_HAYSTACK;
+        }
+        else if (IndexNames::GEO_2DSPHERE == accessMethod) {
+            return INDEX_2DSPHERE;
+        }
+        else if (IndexNames::TEXT == accessMethod) {
+            return INDEX_TEXT;
+        }
+        else if (IndexNames::HASHED == accessMethod) {
+            return INDEX_HASHED;
+        }
+        else {
+            return INDEX_BTREE;
+        }
     }
 
 }  // namespace mongo