internal void NotifyValueChangeToOwner(string changedProperty, string calledFromEndId)
{
IElementEventsHandler eventsHandler = owner as IElementEventsHandler;
if (eventsHandler != null)
{
ElementEventArgs arg = new ElementEventArgs(this, changedProperty, calledFromEndId);
eventsHandler.HandleEvent(arg);
}
}
public void HandleEvent(ElementEventArgs args)
{
if (args.EventType == ElementEventType.ElementPropertyChanged)
{
Func <Tuple <OrmAssociationEnd, OrmAssociationEnd> > getAssocEnd = () =>
{
PersistentType currentOwner = this.PersistentTypeOfNavigationProperty;
bool isSource = this.PersistentTypeHasAssociations.SourcePersistentType == currentOwner;
OrmAssociationEnd assocEnd1 = isSource
? this.PersistentTypeHasAssociations.End2
: this.PersistentTypeHasAssociations.End1;
OrmAssociationEnd assocEnd2 = isSource
? this.PersistentTypeHasAssociations.End1
: this.PersistentTypeHasAssociations.End2;
return(new Tuple <OrmAssociationEnd, OrmAssociationEnd>(assocEnd1, assocEnd2));
};
var e = args.ElementPropertyChangedEventArgs;
if (e.DomainProperty.Id == MultiplicityDomainPropertyId)
{
if (this.PersistentTypeHasAssociations != null)
{
var assocEnds = getAssocEnd();
assocEnds.Item1.Multiplicity = (MultiplicityKind)e.NewValue;
}
}
else if (e.DomainProperty.Id == NameDomainPropertyId)
{
if (this.PersistentTypeHasAssociations != null)
{
var assocEnds = getAssocEnd();
assocEnds.Item2.PairTo.SetAsCustom(e.NewValue as string);
}
}
}
}
public void HandleEvent(ElementEventArgs args)
{
if (args.EventType == ElementEventType.CustomEvent)
{
object customEventArgs = args.CustomEventArgs[0];
OrmAssociationEnd eventFromAssocEnd = customEventArgs as OrmAssociationEnd;
string changedProperty = (string)args.CustomEventArgs[1];
string calledFromEndId = (string)args.CustomEventArgs[2];
if (eventFromAssocEnd != null)
{
bool changeAll = string.IsNullOrEmpty(changedProperty);
bool canChangeMultiplicity = changeAll || Util.StringEqual(changedProperty, "Multiplicity", true);
bool canChangePairTo = changeAll || Util.StringEqual(changedProperty, "PairTo", true);
bool eventFromEnd1 = Util.StringEqual(calledFromEndId, "End1", true);
Func <bool, Tuple <NavigationProperty, OrmAssociationEnd> > getDefinitions = delegate(bool revert)
{
PersistentType persistentToFind = eventFromEnd1
? (revert
? this.SourcePersistentType
: this.TargetPersistentType)
: (revert
? this.TargetPersistentType
: this.SourcePersistentType);
OrmAssociationEnd otherAssocEnd = eventFromEnd1
? (revert
? this.End2
: eventFromAssocEnd)
: (revert
? eventFromAssocEnd
: this.End2);
NavigationProperty navigationProperty = this.NavigationProperties.SingleOrDefault(
navProperty => navProperty.PersistentTypeOfNavigationProperty == persistentToFind);
return(new Tuple <NavigationProperty, OrmAssociationEnd>(navigationProperty, otherAssocEnd));
};
{
if (canChangeMultiplicity)
{
bool revert = false;
var definitions = getDefinitions(revert);
var navigationProperty = definitions.Item1;
var otherAssocEnd = definitions.Item2;
if (navigationProperty != null)
{
this.Store.MakeActionWithinTransaction(
string.Format("Updating multiplicity on navigation property '{0}' to value '{1}'",
navigationProperty.Name, eventFromAssocEnd.Multiplicity),
() =>
{
navigationProperty.Multiplicity = otherAssocEnd.Multiplicity;
});
}
}
if (canChangePairTo && !eventFromAssocEnd.PairTo.IsDefault())
{
string newName = eventFromAssocEnd.PairTo.Value;
bool revert = true;
var definitions = getDefinitions(revert);
var navigationProperty = definitions.Item1;
if (navigationProperty != null)
{
this.Store.MakeActionWithinTransaction(
string.Format("Updating name on navigation property '{0}' to value '{1}'",
navigationProperty.Name, newName),
() =>
{
navigationProperty.Name = newName;
});
}
}
}
}
}
}