public void ApplyUpdates()
{
TransactionScope scope = null;
//This is one case where using != try/finally: when the variable in question
//may be re-assigned.
try
{
scope = BuildTransactionScope();
_logger.Info("Executing 'always run' scripts...");
foreach (var script in _alwaysRunScripts.GetScripts())
{
_database.ExecuteScript(script);
}
_logger.Info("Database is currently at version {0}.", _database.Revision);
if (_globalOptions.TargetRevision == DatabaseVersion.Max)
{
_logger.Info("Applying all available updates to database, timeout set to {0} minutes...", _globalOptions.Timeout.TotalMinutes);
}
else
{
_logger.Info("Updating database to revision {0}, timeout set to {1} minutes...", _globalOptions.TargetRevision, _globalOptions.Timeout.TotalMinutes);
}
foreach (var update in _schemaChangeProvider.GetAllChanges().Where(u => u.Version <= _globalOptions.TargetRevision))
{
if (update.NeedsToBeAppliedTo(_database))
{
_logger.Info("Applying update for database version {0}...", update.Version);
_database.ExecuteUpdate(update);
_logger.Info("Finished.");
if (_globalOptions.UseIncrementalTransactions)
{
_logger.Info("Committing transaction...");
scope.Complete();
scope.Dispose();
scope = BuildTransactionScope();
_logger.Info("Done.");
}
}
}
scope.Complete();
}
finally
{
if (scope != null)
{
scope.Dispose();
}
}
_logger.Info("Database is at revision {0}", _database.Revision);
_logger.Info("Done!");
}
public void ApplyRollbacks()
{
TransactionScope scope;
using (scope = BuildTransactionScope())
{
_logger.Info("Executing 'always run' scripts...");
foreach (var script in _alwaysRunScripts.GetScripts())
{
_database.ExecuteScript(script);
}
_logger.Info("Reverting database to revision {0}...", _globalOptions.TargetRevision);
foreach (var change in _schemaChangeProvider.GetAllChanges().Reverse().Where(u => u.Version > _globalOptions.TargetRevision))
{
if (change.NeedsToBeRolledBackFrom(_database))
{
_logger.Info("Applying rollback for database version {0}...", change.Version);
_database.ExecuteRollback(change);
_logger.Info("Finished.");
if (_globalOptions.UseIncrementalTransactions)
{
_logger.Info("Committing transaction...");
scope.Complete();
scope.Dispose();
scope = BuildTransactionScope();
_logger.Info("Done.");
}
}
}
scope.Complete();
}
_logger.Info("Database is at revision {0}", _database.Revision);
_logger.Info("Done!");
}
