protected override async void LoadItemsAsync()
{
IsBusy = true;
//var groupId = GroupId > 0 ? GroupId : (uint?)null;
try
{
Items = await Executer.Execute(
() => _hostProxyServer.GetHostsAsync(GroupId, new[] { HostSortField.ByName }));
}
catch (Exception ex)
{
ErrorHandler.Handle(ex);
}
finally
{
IsBusy = false;
}
}
private async Task <IEnumerable <DataItemViewModel> > ResolveHosts(IEnumerable <Item> items)
{
if (items == null)
{
return(null);
}
var cachedIds = _cachedHosts.Select(i => i.Id).ToList();
var hostIds = items
.Where(i => !cachedIds.Contains(i.HostId))
.Select(i => i.HostId)
.Distinct();
// try to find out all new hosts in our cache
if (hostIds.Any())
{
var hosts = await _hostProxyServer.GetHostsAsync(null, null, hostIds.ToArray());
foreach (var host in hosts)
{
_cachedHosts.Add(host);
}
}
var result = new List <DataItemViewModel>();
foreach (var item in items)
{
var itemViewModel = new DataItemViewModel(item);
itemViewModel.HostName = _cachedHosts
.Where(i => i.Id == item.HostId)
.Select(i => i.Name)
.SingleOrDefault();
result.Add(itemViewModel);
}
return(result);
}
