public PropertyInstance MultiValuePropertyEmptyOrNull(MemberProperty memberProperty, object value)
{
var bagPropertyType = memberProperty.PropertyType as CollectionDataType;
ExceptionUtilities.CheckObjectNotNull(bagPropertyType, "Expected property to be a BagProperty instead its a '{0}'", memberProperty.PropertyType);
DataType elementDataType = bagPropertyType.ElementDataType;
if (value == null)
{
return(new NullPropertyInstance(memberProperty.Name, elementDataType.BuildMultiValueTypeName()));
}
else
{
ExceptionUtilities.Assert(value == EmptyData.Value, "value MUST be null or EmptyData.Value");
PropertyInstance collectionProperty = null;
if (elementDataType is ComplexDataType)
{
collectionProperty = new ComplexMultiValueProperty(memberProperty.Name, new ComplexMultiValue(elementDataType.BuildMultiValueTypeName(), false));
}
else
{
ExceptionUtilities.Assert(elementDataType is PrimitiveDataType, "DataType is not a PrimitiveDataType '{0}'", elementDataType);
collectionProperty = new PrimitiveMultiValueProperty(memberProperty.Name, new PrimitiveMultiValue(elementDataType.BuildMultiValueTypeName(), false));
}
// Add an empty one if specified to
return(collectionProperty);
}
}