Re: [Figleaf-developer] Validation and Observable support

[Greg S. <ste...@on...>]

sam...@ma... wrote:
> Quoting Greg Steckman <ste...@on...>:
> 
> 
>>I was working on the drag-and-drop support and thought of another case 
>>to handle with the validation framework: a property is a collection, and 
>>an element gets added to the collection. The property setter isn't 
>>called. Only "get" is needed to get the collection, then the collection 
>>add method is used. This also applies to the Observable interface - 
>>intercepting the set call alone won't work.
>>
>>One solution would be to add "addElement" and "deleteElement" methods to 
>>the PropertyDescriptor. This gets more complicated when you start to 
>>consider what if the type is actually a Map, or some unknown custom 
>>aggregate type, etc.
>>
>>Greg
> 
> 
> 
> This just becomes a ChangeSet specialization - rather than a Change now being a
> property->new value mapping, we now have a Change property->Array of new values
> mappings - write still takes an Object, it just happens to be either a
> Collection or an array of values.
> 

Good I didn't think about the ChangeSet scheme since I wasn't working 
with that code...I'll keep working with the current scheme and then 
convert everything to use the ChangeSet API when it's ready.

Greg