From 08d6c84b9d69b500c964a8ff66e726e1f01f2095 Mon Sep 17 00:00:00 2001
From: Douglas Rumbaugh <dbr4@psu.edu>
Date: Mon, 22 May 2023 13:25:20 -0400
Subject: Progress towards generalization of shard interface

---
 include/framework/QueryInterface.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 include/framework/QueryInterface.h

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

diff --git a/include/framework/QueryInterface.h b/include/framework/QueryInterface.h
new file mode 100644
index 0000000..eafeeb0
--- /dev/null
+++ b/include/framework/QueryInterface.h
@@ -0,0 +1,22 @@
+/*
+ * include/framework/QueryInterface.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 Q>
+concept QueryInterface = requires(Q q, void *p) {
+    {q.get_query_state(p, p)} -> std::convertible_to<void*>;
+    {q.get_buffer_query_state(p, p)};
+    {q.query(p, p)};
+    {q.buffer_query(p, p)};
+    {q.merge()};
+    {q.delete_query_state(p)};
+};
-- 
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