public virtual T ExecuteSingle <T>(Remotion.Linq.QueryModel queryModel, bool returnDefaultWhenEmpty)
{
var executeSingle = QueryableDataSource.ExecuteSingle <T>((GetQueryDescription(queryModel)), _binder);
return(executeSingle);
// return returnDefaultWhenEmpty ? ExecuteCollection<T>(queryModel).SingleOrDefault() : ExecuteCollection<T>(queryModel).Single();
}
/// <summary>
/// Raises the FilterChanged event. This is necessary to notify the data source that the filter selection
/// has changed and the query needs to be reevaluated.
/// </summary>
protected void OnFilterChanged()
{
// Clear the default value for this column
ClearDefaultValues();
EventHandler eventHandler = FilterChanged;
if (eventHandler != null)
{
eventHandler(this, EventArgs.Empty);
}
QueryableDataSource.RaiseViewChanged();
}
public virtual IEnumerable <T> ExecuteCollection <T>(Remotion.Linq.QueryModel queryModel)
{
return(QueryableDataSource.ExecuteMany <T>((GetQueryDescription(queryModel)), _binder));
}
public virtual T ExecuteScalar <T>(Remotion.Linq.QueryModel queryModel)
{
return(QueryableDataSource.ExecuteScalar <T>(GetQueryDescription(queryModel), _binder));
}
