SERVER-41658 Convert ShardCollectionType into an IDL type

1 files changed, 13 insertions, 2 deletions

diff --git a/src/mongo/db/keypattern.h b/src/mongo/db/keypattern.h
index d87bc8632c5..ac31301b7f2 100644
--- a/src/mongo/db/keypattern.h
+++ b/src/mongo/db/keypattern.h
@@ -29,6 +29,7 @@
 
 #pragma once
 
+#include "mongo/base/status.h"
 #include "mongo/base/string_data.h"
 #include "mongo/bson/util/builder.h"
 #include "mongo/db/jsobj.h"
@@ -68,10 +69,20 @@ public:
     static bool isHashedKeyPattern(const BSONObj& pattern);
 
     /**
-     * Constructs a new key pattern based on a BSON document
+     * Constructs a new key pattern based on a BSON document.
+     * Used as an interface to the IDL parser.
+     */
+    static KeyPattern fromBSON(const BSONObj& pattern) {
+        return KeyPattern(pattern.getOwned());
+    }
+
+    /**
+     * Constructs a new key pattern based on a BSON document.
      */
     KeyPattern(const BSONObj& pattern);
 
+    explicit KeyPattern() = default;
+
     /**
      * Returns a BSON representation of this KeyPattern.
      */
@@ -80,7 +91,7 @@ public:
     }
 
     /**
-     * Returns a string representation of this KeyPattern
+     * Returns a string representation of this KeyPattern.
      */
     std::string toString() const {
         return str::stream() << *this;