From d31e96535e3f41c36646f375680d7a4efc5772b2 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Wed, 3 Jul 2013 11:59:08 +0200
Subject: Test MySQL sub-second precision support

---
 qt/mysql/date-time/driver.cxx | 34 +++++++++++++++++++++++++++++-----
 qt/mysql/date-time/makefile   |  4 ++--
 qt/mysql/date-time/test.hxx   | 17 +++++++++++++++++
 3 files changed, 48 insertions(+), 7 deletions(-)

(limited to 'qt/mysql')

diff --git a/qt/mysql/date-time/driver.cxx b/qt/mysql/date-time/driver.cxx
index 57eab2c..f26879c 100644
--- a/qt/mysql/date-time/driver.cxx
+++ b/qt/mysql/date-time/driver.cxx
@@ -35,6 +35,29 @@ main (int argc, char* argv[])
   {
     auto_ptr<database> db (create_database (argc, argv));
 
+    mysql_version v;
+    {
+      transaction t (db->begin ());
+      db->query<mysql_version> ().begin ().load (v);
+      t.commit ();
+    }
+
+    // If we are running against MySQL 5.6.4 or later alter the tables
+    // to allow sub-second precision.
+    //
+    bool fs (v.major > 5 ||
+             (v.major == 5 && (v.minor > 6 ||
+                               (v.minor == 6 && v.release >= 4))));
+    if (fs)
+    {
+      transaction t (db->begin ());
+      db->execute ("ALTER TABLE `qt_mysql_dt_object`"               \
+                   "  MODIFY COLUMN `date_time` DATETIME(3),"       \
+                   "  MODIFY COLUMN `timestamp` TIMESTAMP(3) NULL," \
+                   "  MODIFY COLUMN `time` TIME(3)");
+      t.commit ();
+    }
+
     //
     // Check valid dates and times.
     //
@@ -61,14 +84,15 @@ main (int argc, char* argv[])
     //
 
     // Create a QDateTime containing the current date and time
-    // but with the milliseconds zeroed. MySQL does not currently
-    // support millisecond times.
+    // but with the milliseconds zeroed. MySQL prior to 5.6.4
+    // does not support sub-second prevision.
     //
     QDateTime t (QDateTime::currentDateTime ());
 
-    t.setTime (QTime (t.time ().hour (),
-                      t.time ().minute (),
-                      t.time ().second ()));
+    if (!fs)
+      t.setTime (QTime (t.time ().hour (),
+                        t.time ().minute (),
+                        t.time ().second ()));
 
     o.date = t.date ();
     o.date_time = t;
diff --git a/qt/mysql/date-time/makefile b/qt/mysql/date-time/makefile
index 039b952..ded9a6c 100644
--- a/qt/mysql/date-time/makefile
+++ b/qt/mysql/date-time/makefile
@@ -37,8 +37,8 @@ $(qt_core.l.cpp-options)
 
 $(gen): $(odb)
 $(gen): odb := $(odb)
-$(gen) $(dist): export odb_options += --database mysql --profile qt/date-time \
---generate-schema --table-prefix qt_mysql_dt_
+$(gen) $(dist): export odb_options += --database mysql --generate-schema \
+--generate-query --profile qt/date-time --table-prefix qt_mysql_dt_
 $(gen): cpp_options := -I$(src_base)
 $(gen): $(common.l.cpp-options) $(odb_qt.l.cpp-options) \
 $(qt_core.l.cpp-options)
diff --git a/qt/mysql/date-time/test.hxx b/qt/mysql/date-time/test.hxx
index 7e58376..2570285 100644
--- a/qt/mysql/date-time/test.hxx
+++ b/qt/mysql/date-time/test.hxx
@@ -51,4 +51,21 @@ struct object
   QTime time;
 };
 
+// MySQL server version view.
+//
+#pragma db view query(                                                  \
+  "SELECT "                                                             \
+  "CAST(SUBSTRING_INDEX(@@version, '.', 1) AS UNSIGNED),"               \
+  "CAST(SUBSTRING_INDEX(SUBSTRING_INDEX(@@version, '.', 2), '.', -1) AS UNSIGNED)," \
+  "CAST(SUBSTRING_INDEX(SUBSTRING_INDEX(@@version, '-', 1), '.', -1) AS UNSIGNED)," \
+  "@@protocol_version")
+struct mysql_version
+{
+  unsigned int major;
+  unsigned int minor;
+  unsigned int release;
+
+  unsigned int protocol;
+};
+
 #endif // TEST_HXX
-- 
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