From e440e73a889c8929730632d62ebc84e32475b549 Mon Sep 17 00:00:00 2001
From: Constantin Michael <constantin@codesynthesis.com>
Date: Wed, 13 Jul 2011 11:03:13 +0200
Subject: Add PostgreSQL

---
 mapping/database.hxx     |   8 +++-
 mapping/makefile         |   2 +-
 mapping/traits-pgsql.cxx |  19 +++++++++
 mapping/traits-pgsql.hxx | 107 +++++++++++++++++++++++++++++++++++++++++++++++
 mapping/traits.hxx       |   2 +
 5 files changed, 136 insertions(+), 2 deletions(-)
 create mode 100644 mapping/traits-pgsql.cxx
 create mode 100644 mapping/traits-pgsql.hxx

(limited to 'mapping')

diff --git a/mapping/database.hxx b/mapping/database.hxx
index 7920d93..fe815e9 100644
--- a/mapping/database.hxx
+++ b/mapping/database.hxx
@@ -1,4 +1,4 @@
-// file      : mapping/database.hxx
+// file      : template/database.hxx
 // author    : Boris Kolpackov <boris@codesynthesis.com>
 // copyright : not copyrighted - public domain
 
@@ -22,6 +22,8 @@
 #  include <odb/transaction.hxx>
 #  include <odb/schema-catalog.hxx>
 #  include <odb/sqlite/database.hxx>
+#elif defined(DATABASE_PGSQL)
+#  include <odb/pgsql/database.hxx>
 #endif
 
 inline std::auto_ptr<odb::database>
@@ -39,6 +41,8 @@ create_database (int& argc, char* argv[])
     odb::mysql::database::print_usage (cerr);
 #elif defined(DATABASE_SQLITE)
     odb::sqlite::database::print_usage (cerr);
+#elif defined(DATABASE_PGSQL)
+    odb::pgsql::database::print_usage (cerr);
 #endif
 
     exit (0);
@@ -58,6 +62,8 @@ create_database (int& argc, char* argv[])
     schema_catalog::create_schema (*db);
     t.commit ();
   }
+#elif defined(DATABASE_PGSQL)
+  auto_ptr<database> db (new odb::pgsql::database (argc, argv));
 #endif
 
   return db;
diff --git a/mapping/makefile b/mapping/makefile
index 1b50fe2..b3c029d 100644
--- a/mapping/makefile
+++ b/mapping/makefile
@@ -5,7 +5,7 @@
 
 include $(dir $(lastword $(MAKEFILE_LIST)))../build/bootstrap.make
 
-cxx_tun := driver.cxx
+cxx_tun := driver.cxx traits-pgsql.cxx
 odb_hdr := person.hxx
 cxx_obj := $(addprefix $(out_base)/,$(cxx_tun:.cxx=.o) $(odb_hdr:.hxx=-odb.o))
 cxx_od  := $(cxx_obj:.o=.o.d)
diff --git a/mapping/traits-pgsql.cxx b/mapping/traits-pgsql.cxx
new file mode 100644
index 0000000..026e15f
--- /dev/null
+++ b/mapping/traits-pgsql.cxx
@@ -0,0 +1,19 @@
+// file      : mapping/traits-pgsql.cxx
+// author    : Constantin Michael <constantin@codesynthesis.com>
+// copyright : not copyrighted - public domain
+
+#include "traits-pgsql.hxx"
+
+namespace odb
+{
+  namespace pgsql
+  {
+    namespace
+    {
+      tm pg_epoch_tm = {0, 0, 0, 1, 1, 100, 0, 0, 0, 0, 0};
+    }
+
+    const time_t value_traits<date, id_date>::pg_epoch_tt (
+      mktime (&pg_epoch_tm));
+  }
+}
diff --git a/mapping/traits-pgsql.hxx b/mapping/traits-pgsql.hxx
new file mode 100644
index 0000000..6ee396d
--- /dev/null
+++ b/mapping/traits-pgsql.hxx
@@ -0,0 +1,107 @@
+// file      : mapping/traits-pgsql.hxx
+// author    : Constantin Michael <constantin@codesynthesis.com>
+// copyright : not copyrighted - public domain
+
+#ifndef TRAITS_PGSQL_HXX
+#define TRAITS_PGSQL_HXX
+
+//
+// PostgreSQL implementation.
+//
+
+#include <cstring>
+#include <ctime>
+
+#include <odb/pgsql/traits.hxx>
+#include <odb/pgsql/details/endian-traits.hxx>
+
+#include "person.hxx" // date
+
+namespace odb
+{
+  namespace pgsql
+  {
+    template <>
+    class value_traits<bool, id_string>
+    {
+    public:
+      typedef bool value_type;
+      typedef bool query_type;
+      typedef details::buffer image_type;
+
+      static void
+      set_value (bool& v,
+                 const details::buffer& b,
+                 std::size_t n,
+                 bool is_null)
+      {
+        v = (!is_null && n == 4 && std::strncmp ("true", b.data (), n) == 0);
+      }
+
+      static void
+      set_image (details::buffer& b,
+                 std::size_t& n,
+                 bool& is_null,
+                 bool v)
+      {
+        is_null = false;
+        n = v ? 4 : 5;
+
+        if (n > b.capacity ())
+          b.capacity (n);
+
+        std::memcpy (b.data (), (v ? "true" : "false"), n);
+      }
+    };
+
+    template <>
+    class value_traits<date, id_date>
+    {
+    public:
+      typedef date value_type;
+      typedef date query_type;
+      typedef int image_type;
+
+      static const time_t pg_epoch_tt;
+      static const time_t seconds_per_day = 86400;
+
+      static void
+      set_value (date& v, const int& i, bool is_null)
+      {
+        if (is_null)
+        {
+          v = date (0, 0, 0);
+          return;
+        }
+
+        time_t v_tt (pg_epoch_tt +
+                     static_cast<time_t> (details::endian_traits::ntoh (i)) *
+                     seconds_per_day);
+
+        tm v_tm (*localtime (&v_tt));
+
+        v = date (v_tm.tm_year + 1900, v_tm.tm_mon, v_tm.tm_mday);
+      }
+
+      static void
+      set_image (int& i, bool& is_null, const date& v)
+      {
+        is_null = false;
+
+        tm v_tm;
+        memset (&v_tm, 0, sizeof (v_tm));
+
+        v_tm.tm_mday = v.day ();
+        v_tm.tm_mon = v.month ();
+        v_tm.tm_year = v.year () - 1900;
+
+        time_t v_tt (mktime (&v_tm));
+
+        i = details::endian_traits::hton (
+          static_cast<int> ((v_tt - pg_epoch_tt) / seconds_per_day));
+      }
+    };
+  }
+}
+
+#endif // TRAITS_PGSQL_HXX
diff --git a/mapping/traits.hxx b/mapping/traits.hxx
index 1009265..1d2412b 100644
--- a/mapping/traits.hxx
+++ b/mapping/traits.hxx
@@ -11,6 +11,8 @@
 #  include "traits-mysql.hxx"
 #elif defined(DATABASE_SQLITE)
 #  include "traits-sqlite.hxx"
+#elif defined(DATABASE_PGSQL)
+#  include "traits-pgsql.hxx"
 #endif
 
 #endif // TRAITS_HXX
-- 
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