From 8117ecc138e9f87ade5a475a2695d1e39f474d8c Mon Sep 17 00:00:00 2001
From: Randolph Tan <randolph@10gen.com>
Date: Fri, 7 Aug 2015 15:12:15 -0400
Subject: SERVER-19390 Make read concern args accept optional parameters

---
 src/mongo/db/repl/read_concern_args.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

(limited to 'src/mongo/db/repl/read_concern_args.h')

diff --git a/src/mongo/db/repl/read_concern_args.h b/src/mongo/db/repl/read_concern_args.h
index 1876d7a3d2d..c6f3605a9fb 100644
--- a/src/mongo/db/repl/read_concern_args.h
+++ b/src/mongo/db/repl/read_concern_args.h
@@ -28,6 +28,7 @@
 
 #pragma once
 
+#include <boost/optional.hpp>
 #include <string>
 
 #include "mongo/base/status.h"
@@ -42,7 +43,6 @@ namespace repl {
 
 enum class ReadConcernLevel { kLocalReadConcern, kMajorityReadConcern, kLinearizableReadConcern };
 
-// TODO: make this reflect the fact that level and afterOpTime are in fact optional.
 class ReadConcernArgs {
 public:
     static const std::string kReadConcernFieldName;
@@ -52,7 +52,7 @@ public:
     static const std::string kLevelFieldName;
 
     ReadConcernArgs();
-    ReadConcernArgs(OpTime opTime, ReadConcernLevel level);
+    ReadConcernArgs(boost::optional<OpTime> opTime, boost::optional<ReadConcernLevel> level);
 
     /**
      * Format:
@@ -73,11 +73,11 @@ public:
     void appendInfo(BSONObjBuilder* builder);
 
     ReadConcernLevel getLevel() const;
-    const OpTime& getOpTime() const;
+    OpTime getOpTime() const;
 
 private:
-    OpTime _opTime;
-    ReadConcernLevel _level;
+    boost::optional<OpTime> _opTime;
+    boost::optional<ReadConcernLevel> _level;
 };
 
 }  // namespace repl
-- 
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