/// <summary>
/// Do the following when an Entity changes:
/// - Update roles in related Associations
/// </summary>
/// <param name="e"></param>
public override void ElementPropertyChanged(ElementPropertyChangedEventArgs e)
{
base.ElementPropertyChanged(e);
var changedNavigationProperty = e.ModelElement as NavigationProperty;
Debug.Assert(changedNavigationProperty != null);
Debug.Assert(
changedNavigationProperty.EntityType != null && changedNavigationProperty.EntityType.EntityDesignerViewModel != null);
if ((changedNavigationProperty != null) &&
(changedNavigationProperty.EntityType != null) &&
(changedNavigationProperty.EntityType.EntityDesignerViewModel != null))
{
var tx = ModelUtils.GetCurrentTx(e.ModelElement.Store);
Debug.Assert(tx != null);
// don't do the auto update stuff if we are in the middle of deserialization
if (tx != null &&
!tx.IsSerializing)
{
var viewModel = changedNavigationProperty.EntityType.EntityDesignerViewModel;
if (e.DomainProperty.Id == NameableItem.NameDomainPropertyId)
{
// if we are creating this, the old name will be empty so there is no 'change' to do
if (String.IsNullOrEmpty((string)e.OldValue))
{
return;
}
if (!EscherAttributeContentValidator.IsValidCsdlNavigationPropertyName(changedNavigationProperty.Name))
{
throw new InvalidOperationException(
String.Format(
CultureInfo.CurrentCulture, Resources.Error_NavigationPropertyNameInvalid,
changedNavigationProperty.Name));
}
var modelEntityType =
viewModel.ModelXRef.GetExisting(changedNavigationProperty.EntityType) as Model.Entity.EntityType;
Debug.Assert(modelEntityType != null, "modelEntityType is null");
// ensure name is unique
if (modelEntityType.LocalName.Value.Equals(changedNavigationProperty.Name, StringComparison.Ordinal))
{
var msg = string.Format(
CultureInfo.CurrentCulture, Model.Resources.Error_MemberNameSameAsParent, changedNavigationProperty.Name,
modelEntityType.LocalName.Value);
throw new InvalidOperationException(msg);
}
else if (!EDMModelUtils.IsUniquePropertyName(modelEntityType, changedNavigationProperty.Name, true))
{
var msg = string.Format(
CultureInfo.CurrentCulture, Model.Resources.Error_MemberNameNotUnique, changedNavigationProperty.Name,
modelEntityType.LocalName.Value);
throw new InvalidOperationException(msg);
}
ViewModelChangeContext.GetNewOrExistingContext(tx)
.ViewModelChanges.Add(new NavigationPropertyChange(changedNavigationProperty));
}
}
}
}
