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// file : odb/pgsql/auto-handle.hxx
// author : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef ODB_PGSQL_AUTO_HANDLE_HXX
#define ODB_PGSQL_AUTO_HANDLE_HXX
#include <odb/pre.hxx>
#include <odb/pgsql/version.hxx>
#include <odb/pgsql/pgsql-fwd.hxx> // PGconn, PGresult
#include <odb/pgsql/details/export.hxx>
namespace odb
{
namespace pgsql
{
template <typename H>
struct handle_traits;
template <>
struct LIBODB_PGSQL_EXPORT handle_traits<PGconn>
{
static void
release (PGconn*);
};
template <>
struct LIBODB_PGSQL_EXPORT handle_traits<PGresult>
{
static void
release (PGresult*);
};
template <typename H>
class auto_handle
{
public:
auto_handle (H* h = 0)
: h_ (h)
{
}
~auto_handle ()
{
if (h_ != 0)
handle_traits<H>::release (h_);
}
H*
get () const
{
return h_;
}
void
reset (H* h = 0)
{
if (h_ != 0)
handle_traits<H>::release (h_);
h_ = h;
}
H*
release ()
{
H* h (h_);
h_ = 0;
return h;
}
operator H* () const
{
return h_;
}
private:
auto_handle (const auto_handle&);
auto_handle& operator= (const auto_handle&);
private:
H* h_;
};
}
}
#include <odb/post.hxx>
#endif // ODB_PGSQL_AUTO_HANDLE_HXX
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