public bool IsNull(PropertyAccessor propertyAccessor, ClientTransaction transaction)
{
ArgumentUtility.CheckNotNull("propertyAccessor", propertyAccessor);
ArgumentUtility.CheckNotNull("transaction", transaction);
if (propertyAccessor.PropertyData.RelationEndPointDefinition.IsVirtual)
{
return(GetValueWithoutTypeCheck(propertyAccessor, transaction) == null);
}
else // for nonvirtual end points check out the ObjectID, which is stored in the DataContainer; this allows IsNull to avoid loading the object
{
return(ValuePropertyAccessorStrategy.Instance.GetValueWithoutTypeCheck(propertyAccessor, transaction) == null);
}
}
public void SetValueWithoutTypeCheck(PropertyAccessor propertyAccessor, ClientTransaction transaction, object value)
{
ArgumentUtility.CheckNotNull("propertyAccessor", propertyAccessor);
ArgumentUtility.CheckNotNull("transaction", transaction);
var newCollection = ArgumentUtility.CheckNotNullAndType <DomainObjectCollection> ("value", value);
DomainObjectCheckUtility.EnsureNotDeleted(propertyAccessor.DomainObject, transaction);
RelationEndPointID id = CreateRelationEndPointID(propertyAccessor);
var endPoint = (ICollectionEndPoint)transaction.DataManager.GetRelationEndPointWithLazyLoad(id);
if (newCollection.AssociatedEndPointID != null && newCollection.AssociatedEndPointID != endPoint.ID)
{
throw new ArgumentException("The given collection is already associated with an end point.", "value");
}
if (newCollection.RequiredItemType != endPoint.Collection.RequiredItemType &&
!newCollection.IsReadOnly &&
!endPoint.Collection.IsReadOnly)
{
throw new InvalidOperationException("The given collection has a different item type than the end point's current opposite collection.");
}
if (newCollection.GetType() != endPoint.Collection.GetType())
{
var message = string.Format(
"The given collection ('{0}') is not of the same type as the end point's current opposite collection ('{1}').",
newCollection.GetType(),
endPoint.Collection.GetType());
throw new InvalidOperationException(message);
}
var command = endPoint.CreateSetCollectionCommand(newCollection);
var bidirectionalModification = command.ExpandToAllRelatedObjects();
bidirectionalModification.NotifyAndPerform();
}
private DataContainer GetDataContainer(PropertyAccessor propertyAccessor, ClientTransaction transaction)
{
return(transaction.DataManager.GetDataContainerWithLazyLoad(propertyAccessor.DomainObject.ID, throwOnNotFound: true));
}
public RelationEndPointID CreateRelationEndPointID(PropertyAccessor propertyAccessor)
{
ArgumentUtility.CheckNotNull("propertyAccessor", propertyAccessor);
return(RelatedObjectPropertyAccessorStrategy.Instance.CreateRelationEndPointID(propertyAccessor));
}
public RelationEndPointID CreateRelationEndPointID(PropertyAccessor propertyAccessor)
{
ArgumentUtility.CheckNotNull("propertyAccessor", propertyAccessor);
return(RelationEndPointID.Create(propertyAccessor.DomainObject.ID, propertyAccessor.PropertyData.RelationEndPointDefinition));
}
