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authorGravatar Adam Chlipala <adamc@hcoop.net>2008-08-28 14:48:33 -0400
committerGravatar Adam Chlipala <adamc@hcoop.net>2008-08-28 14:48:33 -0400
commit508290e29047e068b9db4b02485fefd9e3ced81c (patch)
treed3fc8eec392562fbb5c15d431c4b7e3ff8d6a824 /tests/query.lac
parent6cc9b62f90276ce8535ead07a3865cd71d98a526 (diff)
Transactions and queries, at source level
Diffstat (limited to 'tests/query.lac')
-rw-r--r--tests/query.lac16
1 files changed, 16 insertions, 0 deletions
diff --git a/tests/query.lac b/tests/query.lac
new file mode 100644
index 00000000..2caf0412
--- /dev/null
+++ b/tests/query.lac
@@ -0,0 +1,16 @@
+table t1 : {A : int, B : string, C : float}
+table t2 : {A : float, D : int}
+
+datatype list a = Nil | Cons of a * list a
+
+val q1 = (SELECT * FROM t1)
+val r1 : transaction (list {A : int, B : string, C : float}) =
+ query q1
+ (fn fs _ acc => return (Cons (fs.T1, acc)))
+ Nil
+
+val r2 : transaction int =
+ ls <- r1;
+ return (case ls of
+ Nil => 0
+ | Cons ({A = a, ...}, _) => a)