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// file : mssql/types/test.hxx
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef TEST_HXX
#define TEST_HXX
#include <string>
#include <vector>
#include <odb/core.hxx>
// Map SQL Server SQL_VARIANT type to our variant C++ class that is capable
// of storing either an integer or a string (QVariant and boost::variant
// would be natural alternatives to our own type). The SQL Server functions
// that are used in the 'to' and 'from' expressions below are defined in
// the custom.sql file. The other half of this mapping is in traits.hxx
// (value_traits<variant, id_long_string>).
//
#pragma db map type("SQL_VARIANT") \
as("VARCHAR(max)") \
to("dbo.string_to_variant((?))") \
from("dbo.variant_to_string((?))")
#pragma db value type("SQL_VARIANT")
struct variant
{
variant (unsigned long v = 0): val_type (type_int), int_val (v) {}
variant (const std::string& v): val_type (type_str), str_val (v) {}
enum {type_int, type_str} val_type;
unsigned long int_val;
std::string str_val;
};
inline bool
operator== (const variant& a, const variant& b)
{
if (a.val_type != b.val_type)
return false;
switch (a.val_type)
{
case variant::type_int:
return a.int_val == b.int_val;
case variant::type_str:
return a.str_val == b.str_val;
}
return false;
}
#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;
variant v;
std::vector<variant> vv;
#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
&& vv == y.vv
#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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