From 98d669cf07157e275fa796fdd5ad35f3388b0ad1 Mon Sep 17 00:00:00 2001
From: Adam Chlipala <adamc@hcoop.net>
Date: Thu, 6 Nov 2008 17:09:53 -0500
Subject: About to begin optimization of recursive transaction functions

---
 demo/treeFun.urs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 demo/treeFun.urs

(limited to 'demo/treeFun.urs')

diff --git a/demo/treeFun.urs b/demo/treeFun.urs
new file mode 100644
index 00000000..501a0575
--- /dev/null
+++ b/demo/treeFun.urs
@@ -0,0 +1,22 @@
+functor Make(M : sig
+                 type key
+                 con id :: Name
+                 con parent :: Name
+                 con cols :: {Type}
+                 constraint [id] ~ [parent]
+                 constraint [id, parent] ~ cols
+
+                 val key_inj : sql_injectable key
+                 val option_key_inj : sql_injectable (option key)
+
+                 table tab : [id = key, parent = option key] ++ cols
+             end) : sig
+
+    con id = M.id
+    con parent = M.parent
+
+    val tree : ($([id = M.key, parent = option M.key] ++ M.cols) -> xbody)
+               -> option M.key
+               -> transaction xbody
+
+end
-- 
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