internal static void UpdateReference(UnifiedIMReference reference, IUnifiedIMObject host, IUnifiedIMObject target)
{
object hVal = reference.GetHostProperty(host);
object tVal = reference.GetTargetProperty(target);
if (Matches(reference, hVal, tVal))
{
if (typeof(IList).IsAssignableFrom(reference.SetPropertyType))
{
IList list = (IList)reference.GetReferenceProperty(host);
if (list == null)
{
throw new ArgumentException("Reference Lists should be initiated with an instance. And never be null");
}
//if (!list.Contains(target))
list.Add(target);
}
else
{
reference.SetReferenceProperty(host, target);
}
target.RefTo.Add(new KeyValuePair <UnifiedIMReference, IUnifiedIMObject>(reference, host));
}
else
{
if (typeof(IList).IsAssignableFrom(reference.SetPropertyType))
{
IList list = (IList)reference.GetReferenceProperty(host);
if (list == null)
{
throw new ArgumentException("Reference Lists should be initiated with an instance. And never be null");
}
//if (list.Contains(target))
list.Remove(target);
}
else
{
object curVal = reference.GetReferenceProperty(host);
if (curVal == target)
{
reference.SetReferenceProperty(host, null);
}
}
target.RefTo.RemoveAll(x => x.Key == reference && x.Value == host);
}
}
internal static void DeleteReference(IUnifiedIMObject obj, UnifiedIMReference rf)
{
lock (obj.RefTo)
{
if (rf.TargetType == obj.DataType)
{
foreach (KeyValuePair <UnifiedIMReference, IUnifiedIMObject> o in obj.RefTo)
{
if (o.Value.DataType == rf.HostType)
{
object sProperty = rf.GetReferenceProperty(o.Value);
if (typeof(IList).IsAssignableFrom(rf.SetPropertyType))
{
((IList)sProperty).Remove(obj);
}
else if (sProperty == obj)
{
rf.SetReferenceProperty(o.Value, null);
}
}
}
obj.RefTo.RemoveAll(x => x.Key == rf);
}
else if (rf.HostType == obj.DataType)
{
object sProperty = rf.GetReferenceProperty(obj);
if (typeof(IList).IsAssignableFrom(rf.SetPropertyType))
{
foreach (object o in ((IList)sProperty))
{
((IUnifiedIMObject)o).RefTo.RemoveAll(x => x.Key == rf && x.Value == obj);
}
((IList)sProperty).Clear();
}
else if (sProperty == obj)
{
rf.SetReferenceProperty(obj, null);
((IUnifiedIMObject)sProperty).RefTo.RemoveAll(x => x.Key == rf && x.Value == obj);
}
}
}
}