/// <summary>
///
/// </summary>
/// <param name="parameter"></param>
/// <returns></returns>
public IPagingResult SelectFunction(SelectingEventArgs parameter)
{
lock (customDAO)
{
try
{
DetachedCriteria criteria = DetachedCriteria.For(parameter.SourceType);
parameter.Parameters.All
(
sourceParameter =>
{
criteria.Add(Restrictions.Eq(sourceParameter.Name, sourceParameter.Value));
return true;
}
);
var res = customDAO.GetPagedResult(parameter.StartRowIndex, parameter.MaximumRows, criteria);
return new PagingResult(parameter.SourceType, res.StartIndex, res.Size) { Result = res.Result, TotalRowCount = res.Counter };
}
catch (Exception ex)
{
return new PagingResult(parameter.SourceType, new ExecutionQueryException("Error on executing the select function.", "SelectFunction", ex));
}
}
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void CustomDataSource_Selecting(object sender, SelectingEventArgs e)
{
}
/// <summary>
///
/// </summary>
/// <param name="arguments"></param>
/// <returns></returns>
protected override IEnumerable ExecuteSelect(DataSourceSelectArguments arguments)
{
if (owner.SelectFunction == null)
throw new DelegateNotFoundException("SelectFunction", "The select function doesn't implemented.");
arguments.RaiseUnsupportedCapabilitiesError(this);
var eventArg = new SelectingEventArgs(arguments, this.GetSelectParameters(), owner.SourceType);
owner.OnSelecting(eventArg);
if (eventArg.Cancel)
return null;
var selectActionEvent = new ActionEventArgs<SelectingEventArgs, IPagingResult>(eventArg, owner.SelectFunction);
IPagingResult paging = selectActionEvent.Execute();
if (paging.QueryException != null)
{
owner.OnExecutionQueryError(new QueryResultEventArgs(paging));
return null;
}
IEnumerable result = paging.Result;
arguments.TotalRowCount = paging.TotalRowCount;
owner.OnSelected(EventArgs.Empty);
return result;
}
internal void OnSelecting(SelectingEventArgs e)
{
if (Selecting != null) Selecting(this, e);
}