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// file : odb/mysql/transaction-impl.cxx
// copyright : Copyright (c) 2009-2018 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#include <odb/tracer.hxx>
#include <odb/mysql/mysql.hxx>
#include <odb/mysql/database.hxx>
#include <odb/mysql/connection.hxx>
#include <odb/mysql/error.hxx>
#include <odb/mysql/transaction-impl.hxx>
namespace odb
{
namespace mysql
{
transaction_impl::
transaction_impl (database_type& db)
: odb::transaction_impl (db)
{
}
transaction_impl::
transaction_impl (connection_ptr c)
: odb::transaction_impl (c->database (), *c), connection_ (c)
{
}
transaction_impl::
~transaction_impl ()
{
}
void transaction_impl::
start ()
{
// Grab a connection if we don't already have one.
//
if (connection_ == 0)
{
connection_ = static_cast<database_type&> (database_).connection ();
odb::transaction_impl::connection_ = connection_.get ();
}
{
odb::tracer* t;
if ((t = connection_->tracer ()) || (t = database_.tracer ()))
t->execute (*connection_, "BEGIN");
}
if (mysql_real_query (connection_->handle (), "begin", 5) != 0)
translate_error (*connection_);
}
void transaction_impl::
commit ()
{
// Invalidate query results.
//
connection_->invalidate_results ();
// Cancel and clear the active statement if any. This normally
// should happen automatically, however, if an exception is
// thrown, this may not be the case.
//
connection_->clear ();
{
odb::tracer* t;
if ((t = connection_->tracer ()) || (t = database_.tracer ()))
t->execute (*connection_, "COMMIT");
}
if (mysql_real_query (connection_->handle (), "commit", 6) != 0)
translate_error (*connection_);
// Release the connection.
//
connection_.reset ();
}
void transaction_impl::
rollback ()
{
// Invalidate query results.
//
connection_->invalidate_results ();
// Cancel and clear the active statement if any. This normally
// should happen automatically, however, if an exception is
// thrown, this may not be the case.
//
connection_->clear ();
{
odb::tracer* t;
if ((t = connection_->tracer ()) || (t = database_.tracer ()))
t->execute (*connection_, "ROLLBACK");
}
if (mysql_real_query (connection_->handle (), "rollback", 8) != 0)
translate_error (*connection_);
// Release the connection.
//
connection_.reset ();
}
}
}
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