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

---
 boost/mysql/date-time/driver.cxx | 47 +++++++++++++++++++++++++++++++++++-----
 boost/mysql/date-time/makefile   |  4 ++--
 boost/mysql/date-time/test.hxx   | 17 +++++++++++++++
 3 files changed, 61 insertions(+), 7 deletions(-)

(limited to 'boost')

diff --git a/boost/mysql/date-time/driver.cxx b/boost/mysql/date-time/driver.cxx
index 49d94b7..6ffe051 100644
--- a/boost/mysql/date-time/driver.cxx
+++ b/boost/mysql/date-time/driver.cxx
@@ -37,6 +37,35 @@ 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 `boost_mysql_dt_object_durations`"  \
+                   "  MODIFY COLUMN `value` TIME(6)");
+
+      db->execute ("ALTER TABLE `boost_mysql_dt_object_times`"      \
+                   "  MODIFY COLUMN `value` DATETIME(6)");
+
+      db->execute ("ALTER TABLE `boost_mysql_dt_object_timestamps`" \
+                   "  MODIFY COLUMN `value` TIMESTAMP(6) NULL");
+
+      t.commit ();
+    }
+
     object o;
 
     // Test all valid date-time mappings.
@@ -46,13 +75,16 @@ main (int argc, char* argv[])
     o.dates.push_back (date (max_date_time));
     o.dates.push_back (date (min_date_time));
 
-    o.times.push_back (second_clock::local_time ());
+    if (fs)
+      o.times.push_back (microsec_clock::local_time ());
+    else
+      o.times.push_back (second_clock::local_time ());
     o.times.push_back (not_a_date_time);
     o.times.push_back (min_date_time);
 
-    // MySQL time interface does not support fraction seconds. Construct
-    // with zero fractional seconds so that comparison test does not
-    // fail for invalid reasons.
+    // MySQL prior to 5.6.4 does not support fraction seconds. Construct
+    // with zero fractional seconds so that comparison test does not fail
+    // for invalid reasons.
     //
     o.times.push_back (
       ptime (
@@ -62,10 +94,15 @@ main (int argc, char* argv[])
           ptime (max_date_time).time_of_day ().minutes (),
           ptime (max_date_time).time_of_day ().seconds ())));
 
-    o.timestamps.push_back (second_clock::local_time ());
+    if (fs)
+      o.timestamps.push_back (microsec_clock::local_time ());
+    else
+      o.timestamps.push_back (second_clock::local_time ());
     o.timestamps.push_back (not_a_date_time);
 
     o.durations.push_back (time_duration (1, 2, 3));
+    if (fs)
+      o.durations.back () += time_duration (microseconds (123456));
     o.durations.push_back (time_duration (-1, 2, 3));
     o.durations.push_back (not_a_date_time);
 
diff --git a/boost/mysql/date-time/makefile b/boost/mysql/date-time/makefile
index aaff422..c6c60fd 100644
--- a/boost/mysql/date-time/makefile
+++ b/boost/mysql/date-time/makefile
@@ -41,8 +41,8 @@ $(boost.l.cpp-options)
 
 $(gen): $(odb)
 $(gen): odb := $(odb)
-$(gen) $(dist): export odb_options += --database mysql --profile boost/date-time \
---generate-schema --table-prefix boost_mysql_dt_
+$(gen) $(dist): export odb_options += --database mysql --generate-schema \
+--generate-query --profile boost/date-time --table-prefix boost_mysql_dt_
 $(gen): cpp_options := -I$(src_base)
 $(gen): $(common.l.cpp-options) $(odb_boost.l.cpp-options) \
 $(boost.l.cpp-options)
diff --git a/boost/mysql/date-time/test.hxx b/boost/mysql/date-time/test.hxx
index 6244177..253ebb1 100644
--- a/boost/mysql/date-time/test.hxx
+++ b/boost/mysql/date-time/test.hxx
@@ -46,4 +46,21 @@ struct object
   std::vector<boost::posix_time::time_duration> durations;
 };
 
+// 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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