diff options
Diffstat (limited to 'libodb-mysql/odb/mysql/transaction-impl.cxx')
-rw-r--r-- | libodb-mysql/odb/mysql/transaction-impl.cxx | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/libodb-mysql/odb/mysql/transaction-impl.cxx b/libodb-mysql/odb/mysql/transaction-impl.cxx new file mode 100644 index 0000000..0ca1546 --- /dev/null +++ b/libodb-mysql/odb/mysql/transaction-impl.cxx @@ -0,0 +1,108 @@ +// file : odb/mysql/transaction-impl.cxx +// 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 (); + } + } +} |