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// file : odb/pgsql/connection.cxx
// author : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#include <new> // std::bad_alloc
#include <cstring> // std::strcmp
#include <string>
#include <libpq-fe.h>
#include <odb/pgsql/database.hxx>
#include <odb/pgsql/connection.hxx>
#include <odb/pgsql/error.hxx>
#include <odb/pgsql/exceptions.hxx>
#include <odb/pgsql/statement-cache.hxx>
using namespace std;
extern "C" void
odb_pgsql_process_notice (void*, const char*)
{
}
namespace odb
{
namespace pgsql
{
connection::
connection (database_type& db)
: db_ (db),
handle_ (0),
statement_cache_ (new statement_cache_type (*this))
{
handle_ = PQconnectdb (db.conninfo ().c_str ());
if (handle_ == 0)
throw bad_alloc ();
else if (PQstatus (handle_) == CONNECTION_BAD)
{
std::string m (PQerrorMessage (handle_));
PQfinish (handle_);
throw database_exception (m);
}
// Suppress server notifications to stdout.
//
PQsetNoticeProcessor (handle_, &odb_pgsql_process_notice, 0);
// Establish whether date/time values are represented as
// 8-byte integers.
//
if (strcmp (PQparameterStatus (handle_, "integer_datetimes"), "on") != 0)
throw database_exception ("unsupported binary format for PostgreSQL "
"date-time SQL types");
}
connection::
~connection ()
{
// Deallocate prepared statements before we close the connection.
//
statement_cache_.reset ();
PQfinish (handle_);
}
}
}
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