From 0d2430fc32d76974fc143e55c5f4e4efa3eea66c Mon Sep 17 00:00:00 2001
From: Jason Volk <jason@zemos.net>
Date: Sun, 15 Oct 2017 21:13:44 -0700
Subject: [PATCH] ircd::db: Add iov append for json::tuple.

---
 include/ircd/db/iov.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/include/ircd/db/iov.h b/include/ircd/db/iov.h
index c32bfc494..cf0efb5e7 100644
--- a/include/ircd/db/iov.h
+++ b/include/ircd/db/iov.h
@@ -82,6 +82,7 @@ struct ircd::db::iov::append
 	append(iov &, const row::delta &);
 	append(iov &, const delta &);
 	append(iov &, const string_view &key, const json::iov &);
+	template<class... T> append(iov &, const string_view &key, const json::tuple<T...> &);
 };
 
 struct ircd::db::iov::checkpoint
@@ -97,3 +98,20 @@ struct ircd::db::iov::opts
 	size_t reserve_bytes = 0;
 	size_t max_bytes = 0;
 };
+
+template<class... T>
+ircd::db::iov::append::append(iov &iov,
+                              const string_view &key,
+                              const json::tuple<T...> &tuple)
+{
+	for_each(tuple, [&iov, &key](const auto &col, auto&& val)
+	{
+		if(defined(val)) append
+		{
+			iov, delta
+			{
+				col, key, byte_view<string_view>{val}
+			}
+		};
+	});
+}