From 6fd50506d2e50d2faf2478a2883a2ef1b4840a78 Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <dbr4@psu.edu>
Date: Wed, 17 May 2023 16:00:20 -0400
Subject: Started implementing shard interface (not finished yet)

---
 include/framework/ShardInterface.h | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)
 create mode 100644 include/framework/ShardInterface.h

(limited to 'include/framework/ShardInterface.h')

diff --git a/include/framework/ShardInterface.h b/include/framework/ShardInterface.h
new file mode 100644
index 0000000..5d07a99
--- /dev/null
+++ b/include/framework/ShardInterface.h
@@ -0,0 +1,27 @@
+/*
+ * include/shard/ShardInterface.h
+ *
+ * Copyright (C) 2023 Douglas Rumbaugh <drumbaugh@psu.edu> 
+ *
+ * All rights reserved. Published under the Modified BSD License.
+ *
+ */
+#pragma once
+
+#include <concepts>
+
+#include "util/types.h"
+
+template <typename S>
+concept ShardInterface = requires(S s, void *p) {
+    //s.point_lookup();
+    //s.tombstone_lookup();
+    //s.delete_record();
+
+    {s.get_query_state(p)} -> std::convertible_to<void*>;
+    {s.delete_query_state(p)};
+
+    {s.get_record_count()} -> std::convertible_to<size_t>;
+    {s.get_tombstone_count()} -> std::convertible_to<size_t>;
+    {s.get_memory_usage()} -> std::convertible_to<size_t>;
+};
-- 
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