[news.eclipse.platform] Re: Extending Folder resource

["Rahul Kamdar" <rtkamdar@xxxxxxxxxxxxxxxxx>]

Hi Eric and Ed!

Thanks a lot for the prompt responses. From what I did read around, I felt 
you cannot pretty much extend the internal classes but I wanted to reconfirm 
from someone.. So thanks for that... Eric I am looking at basically holding 
a custom object/handle associated with each folder falling under a certain 
group of special folders I have defined under a project.. So for this, one 
of the approach was to make my custom class extend the folder and then add 
some of my own behaviorial methods to it.. This way I would be able to keep 
it all under a single object, my stuff + folder representation..

Am not sure how I would be able to do something similar via extension 
points... Any direction there would be great! But thanks a lot for the 
replies anyway...

Thanks,

Rahul

"Eric Rizzo" <eclipse-news@xxxxxxxxxxxx> wrote in message 
news:fpnpe1$hj5$3@xxxxxxxxxxxxxxxxxxxx
> Rahul Kamdar wrote:
>> Hi,
>>
>> I want to extend the org.eclipse.core.internal.resources.Folder to create 
>> my own type of a Folder and add to the behavior and some of my own 
>> manipulations. When I try to directly extend it, the constructor returns 
>> a ClassCastException. Even if I try to cast a folder object to my own 
>> custom folder, I get the same ClassCastException.
>>
>> We cannot extend classes defined under 
>> org.eclipse.core.internal.resources, is it? Would you suggest on how to 
>> try to the same! :-)
>
> As Ed already said, its futile to try to extend internal classes.
> What behavior, specifially, are you wanting to add? Many things can be 
> done via extension points.
>
> Eric