From 6b8def06796d1e4fc9e6e7e75ce59bccf6899261 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Tue, 10 Jul 2012 15:17:16 +0200
Subject: Add support for custom database type mapping

New pragma qualifier, map, and specifiers: as, to, from. New tests:
<database>/custom.
---
 mssql/custom/test.hxx | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 mssql/custom/test.hxx

(limited to 'mssql/custom/test.hxx')

diff --git a/mssql/custom/test.hxx b/mssql/custom/test.hxx
new file mode 100644
index 0000000..5548baa
--- /dev/null
+++ b/mssql/custom/test.hxx
@@ -0,0 +1,78 @@
+// file      : mssql/types/test.hxx
+// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef TEST_HXX
+#define TEST_HXX
+
+#include <string>
+#include <vector>
+
+#include <odb/core.hxx>
+
+#if !defined(MSSQL_SERVER_VERSION) || MSSQL_SERVER_VERSION >= 1000
+// Map GEOMETRY SQL Server type to the point C++ struct. The other half
+// of this mapping is in traits.hxx (value_traits<point, id_string>).
+// Note that GEOMETRY is not available in SQL Server 2005.
+//
+#pragma db map type("GEOMETRY")                       \
+               as("VARCHAR(256)")                     \
+               to("GEOMETRY::STGeomFromText((?), 0)") \
+               from("(?).STAsText()")
+
+#pragma db value type("GEOMETRY")
+struct point
+{
+  point () {}
+  point (double x_, double y_): x (x_), y (y_) {}
+
+  double x;
+  double y;
+};
+
+inline bool
+operator== (const point& a, const point& b)
+{
+  return a.x == b.x && a.y == b.y;
+}
+#endif // SQL Server > 2005
+
+// Map XML SQL Server type to std::string (or any other type that provides
+// the value_traits<?, id_long_string> specialization). Note also that
+// another alternative would be to interface with the XML data type using
+// VARBINARY or NVARCHAR. Here we use implicit string to/from XML conversion,
+// however, CAST/CONVERT can be used instead for greater control over
+// whitespace handling, etc.
+//
+#pragma db map type("XML *(\\(.+\\))?") as("VARCHAR(max)")
+
+#pragma db object
+struct object
+{
+  object () {}
+  object (unsigned long id_) : id (id_) {}
+
+  #pragma db id
+  unsigned long id;
+
+#if !defined(MSSQL_SERVER_VERSION) || MSSQL_SERVER_VERSION >= 1000
+  point p;
+  std::vector<point> pv;
+#endif
+
+  #pragma db type("XML")
+  std::string xml;
+
+  bool
+  operator== (const object& y) const
+  {
+    return id == y.id
+#if !defined(MSSQL_SERVER_VERSION) || MSSQL_SERVER_VERSION >= 1000
+      && p == y.p
+      && pv == y.pv
+#endif
+      && xml == y.xml;
+  }
+};
+
+#endif // TEST_HXX
-- 
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