Merge pull request #58 from LuxLang/hierarchy_normalization

Hierarchy normalization

1 files changed, 107 insertions, 0 deletions

diff --git a/stdlib/source/library/lux/world/db/jdbc/input.lux b/stdlib/source/library/lux/world/db/jdbc/input.lux
new file mode 100644
index 000000000..9c3de1238
--- /dev/null
+++ b/stdlib/source/library/lux/world/db/jdbc/input.lux
@@ -0,0 +1,107 @@
+(.module:
+  [library
+   [lux (#- and int)
+    [ffi (#+ import:)]
+    [control
+     [functor (#+ Contravariant)]
+     [monad (#+ Monad do)]
+     ["." try (#+ Try)]]
+    [time
+     ["." instant (#+ Instant)]]
+    ["." io (#+ IO)]
+    [world
+     [binary (#+ Binary)]]]])
+
+(import: java/lang/String)
+
+(template [<class>]
+  [(import: <class>
+     (new [long]))]
+
+  [java/sql/Date] [java/sql/Time] [java/sql/Timestamp]
+  )
+
+(`` (import: java/sql/PreparedStatement
+      (~~ (template [<name> <type>]
+            [(<name> [int <type>] #try void)]
+
+            [setBoolean boolean]
+
+            [setByte byte]
+            [setShort short]
+            [setInt int]
+            [setLong long]
+            
+            [setFloat float]
+            [setDouble double]
+
+            [setString java/lang/String]
+            [setBytes [byte]]
+
+            [setDate java/sql/Date]
+            [setTime java/sql/Time]
+            [setTimestamp java/sql/Timestamp]
+            ))))
+
+(type: #export (Input a)
+  (-> a [Nat java/sql/PreparedStatement]
+      (Try [Nat java/sql/PreparedStatement])))
+
+(implementation: #export contravariant (Contravariant Input)
+  (def: (map-1 f fb)
+    (function (fa value circumstance)
+      (fb (f value) circumstance))))
+
+(def: #export (and pre post)
+  (All [l r] (-> (Input l) (Input r) (Input [l r])))
+  (function (_ [left right] context)
+    (do try.monad
+      [context (pre left context)]
+      (post right context))))
+
+(def: #export (fail error)
+  (All [a] (-> Text (Input a)))
+  (function (_ value [idx context])
+    (#try.Failure error)))
+
+(def: #export empty
+  (Input Any)
+  (function (_ value context)
+    (#try.Success context)))
+
+(template [<function> <type> <setter>]
+  [(def: #export <function>
+     (Input <type>)
+     (function (_ value [idx statement])
+       (do try.monad
+         [_ (<setter> (.int idx) value statement)]
+         (wrap [(.inc idx) statement]))))]
+
+  [boolean Bit java/sql/PreparedStatement::setBoolean]
+
+  [byte   Int    java/sql/PreparedStatement::setByte]
+  [short  Int    java/sql/PreparedStatement::setShort]
+  [int    Int    java/sql/PreparedStatement::setInt]
+  [long   Int    java/sql/PreparedStatement::setLong]
+
+  [float  Frac   java/sql/PreparedStatement::setFloat]
+  [double Frac   java/sql/PreparedStatement::setDouble]
+
+  [string Text   java/sql/PreparedStatement::setString]
+  [bytes  Binary java/sql/PreparedStatement::setBytes]
+  )
+
+(template [<function> <setter> <constructor>]
+  [(def: #export <function>
+     (Input Instant)
+     (function (_ value [idx statement])
+       (do try.monad
+         [_ (<setter> (.int idx)
+                      (<constructor> (instant.to-millis value))
+                      statement)]
+         (wrap [(.inc idx) statement]))))]
+
+  [date       java/sql/PreparedStatement::setDate      java/sql/Date::new]
+  [time       java/sql/PreparedStatement::setTime      java/sql/Time::new]
+  [time-stamp java/sql/PreparedStatement::setTimestamp java/sql/Timestamp::new]
+  )