/// <summary>
///
/// </summary>
/// <param name="keys"></param>
/// <param name="oldValues"></param>
/// <returns></returns>
protected override int ExecuteDelete(IDictionary keys, IDictionary oldValues)
{
if (owner.DeleteFunction == null)
throw new DelegateNotFoundException("DeleteFunction", "The delete function doesn't implemented.");
if (owner.IdentifierFunction == null)
throw new DelegateNotFoundException("IdentifierFunction", "The identifier function doesn't implemented.");
var eventArg = new DeletingEventArgs(owner.SourceType, owner.IdentifierFunction.Invoke(keys));
owner.OnDeleting(eventArg);
if (eventArg.Cancel)
return 0;
var deletingActionEvent = new ActionEventArgs<DeletingEventArgs, IPersisterResult>(eventArg, owner.DeleteFunction);
var result = deletingActionEvent.Execute();
if (result.QueryException != null)
{
owner.OnExecutionQueryError(new QueryResultEventArgs(result));
return -1;
}
owner.OnDeleted(EventArgs.Empty);
OnDataSourceViewChanged(EventArgs.Empty);
return 1;
}
/// <summary>
///
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
public IPersisterResult DeleteFunction(DeletingEventArgs parameter)
{
ITransactionProvider tr = customDAO.GetTransactionProvider();
lock (customDAO)
{
try
{
tr.BeginTransaction("DeleteFunction", IsolationLevel.ReadCommitted);
int res = customDAO.MakeHQLQuery(string.Format("delete {0} cls where cls.id= :key", parameter.SourceType.Name))
.SetParameter("key", parameter.Key)
.ExecuteUpdate();
tr.CommitTransaction();
return new PersisterResult(parameter.SourceType, res);
}
catch (Exception ex)
{
tr.RollbackTransaction(ex);
return new PersisterResult(parameter.SourceType, new ExecutionQueryException("Error on executing the delete function.", "DeleteFunction", ex));
}
}
}
internal void OnDeleting(DeletingEventArgs e)
{
if (Deleting != null) Deleting(this, e);
}
