public static IEnumerable <FilterOptionGroupDrop> Metafilters(EntityListDrop entityList, string query = null, EntityViewDrop entityView = null)
{
if (entityList == null || String.IsNullOrWhiteSpace(entityList.FilterDefinition))
{
return(Enumerable.Empty <FilterOptionGroupDrop>());
}
Fetch fetch;
try
{
fetch = Fetch.FromJson(entityList.FilterDefinition);
}
catch (Exception e)
{
ADXTrace.Instance.TraceError(TraceCategory.Application, string.Format("Error parsing entity list filter definition: {0}", e.ToString()));
return(Enumerable.Empty <FilterOptionGroupDrop>());
}
if (fetch == null)
{
return(Enumerable.Empty <FilterOptionGroupDrop>());
}
var serviceContext = entityList.PortalViewContext.CreateServiceContext();
var portalContext = entityList.PortalViewContext.CreatePortalContext();
EntityMetadata entityMetadata;
try
{
entityMetadata = serviceContext.GetEntityMetadata(entityList.EntityLogicalName, EntityFilters.Attributes);
}
catch (FaultException <OrganizationServiceFault> e)
{
ADXTrace.Instance.TraceError(TraceCategory.Application, string.Format(@"Error retrieving metadata for entity ""{0}"": {1}", EntityNamePrivacy.GetEntityName(entityList.EntityLogicalName), e.ToString()));
return(Enumerable.Empty <FilterOptionGroupDrop>());
}
if (entityMetadata == null)
{
return(Enumerable.Empty <FilterOptionGroupDrop>());
}
var currentFilters = String.IsNullOrWhiteSpace(query)
? new NameValueCollection()
: HttpUtility.ParseQueryString(query);
return(FilterOptionGroup.FromFetch(
serviceContext,
portalContext,
entityMetadata,
fetch,
currentFilters,
entityList.LanguageCode,
entityView == null ? null : entityView.Columns.ToDictionary(e => e.LogicalName, e => e.Name))
.Select(@group => new FilterOptionGroupDrop(@group)));
}
internal FilterOptionGroupDrop(FilterOptionGroup @group)
{
if (@group == null)
{
throw new ArgumentNullException("group");
}
Id = @group.Id;
Label = @group.Label;
Order = @group.Order;
SelectionMode = @group.SelectionMode;
Options = @group.Options.Select(option => new FilterOptionDrop(option)).ToArray();
}
