/// <summary>
/// Event handler fires when the SelectedOriginRelationship is modified
/// </summary>
private async void OriginRelatedFeature_FeatureCRUDOperationCompleted(object sender, FeatureOperationEventArgs e)
{
var originRelationshipVM = sender as OriginRelationshipViewModel;
var originRelationshipVMCollection = (OriginRelationships.FirstOrDefault(o => o.RelationshipInfo == originRelationshipVM.RelationshipInfo)).OriginRelationshipViewModelCollection;
if (e.Args == CRUDOperation.Delete)
{
// remove viewmodel from collection
originRelationshipVMCollection.Remove(originRelationshipVM);
}
else
{
//sort collection
SortCollection(originRelationshipVMCollection);
}
try
{
// call method to update tree condition and dbh in custom tree workflow
await TreeSurveyWorkflows.UpdateIdentifiedFeature(originRelationshipVMCollection, Feature, PopupManager);
}
catch (Exception ex)
{
UserPromptMessenger.Instance.RaiseMessageValueChanged(
Resources.GetString("GenericError_Title"),
ex.Message,
true,
ex.StackTrace);
}
}
/// <summary>
/// Gets relationship information for the identified feature and creates the corresponding viewmodels
/// </summary>
internal async Task GetRelationshipInfoForFeature(ArcGISFeature feature)
{
// clear related records from previous searches
DestinationRelationships.Clear();
OriginRelationships.Clear();
// get RelationshipInfos from the table
var relationshipInfos = feature.FeatureTable.GetRelationshipInfos();
// query only the related tables which match the application rules
// save destination and origin type relationships separately as origin relates features are editable in the app
foreach (var relationshipInfo in relationshipInfos)
{
var parameters = new RelatedQueryParameters(relationshipInfo);
// only one related table should return given the specific relationship info passed as parameter
var relatedTable = feature.FeatureTable.GetRelatedFeatureTable(relationshipInfo);
var relationships = await feature.FeatureTable.GetRelatedRecords(feature, relationshipInfo);
if (relationshipInfo.IsValidDestinationRelationship())
{
try
{
// this is a one to many relationship so it will never return more than one result
var relatedFeatureQueryResult = relationships.Where(r => r.IsValidRelationship()).First();
var destinationRelationshipViewModel = new DestinationRelationshipViewModel(relationshipInfo, relatedTable, ConnectivityMode);
await destinationRelationshipViewModel.InitializeAsync(relatedFeatureQueryResult);
DestinationRelationships.Add(destinationRelationshipViewModel);
}
catch (Exception ex)
{
UserPromptMessenger.Instance.RaiseMessageValueChanged(null, Resources.GetString("QueryRelatedFeaturesError_Message"), true, ex.StackTrace);
}
}
else if (relationshipInfo.IsValidOriginRelationship())
{
try
{
foreach (var relatedFeatureQueryResult in relationships.Where(r => r.IsValidRelationship()))
{
var originRelationshipsCollection = new ObservableCollection <OriginRelationshipViewModel>();
foreach (var relatedFeature in relatedFeatureQueryResult)
{
var originRelatedFeature = new OriginRelationshipViewModel(relationshipInfo, ConnectivityMode);
await originRelatedFeature.LoadViewModel(relatedFeature).ContinueWith(t =>
{
originRelationshipsCollection.Add(originRelatedFeature);
});
}
//sort collection
SortCollection(originRelationshipsCollection);
OriginRelationships.Add(new OriginRelationship(relatedTable, relationshipInfo, originRelationshipsCollection));
}
}
catch (Exception ex)
{
UserPromptMessenger.Instance.RaiseMessageValueChanged(null, Resources.GetString("GetFeatureRelationshipError_Message"), true, ex.StackTrace);
}
}
}
}
