RE: [FR-devel] modification to slot.

[Rich Kilmer]

Slots can be more than data holders.  They can hold queues, stacks and
procs.  We created a "manager" attribute for slots which can enable an
object API for that slot, and what slots are "below" it.

scratch = @bus["buffer/scratch"]
scratch.manager = BufferManager.new
...
...
scratch.manager.insert_char(1,"hallo")
...
...

This way, manager presents the API (insert_char) and also encapsulates
how it uses the slots below what is managing
(@bus["buffer/scratch/..."]).  For example, you could have the scratch
capture a version of the buffer on an intermittent basis below the
["buffer/scratch"] path:

@bus["buffer/scratch/1"].data = "Foo"
@bus["buffer/scratch/2"].data = "Foo Bar"

Which could be persistent and be accessed as:

scratch.manager.snapshot
scratch.manager.roll_back

These are, of course, hypothetical.  
Just trying to show ideas :-)

-Rich


> -----Original Message-----
> From: address@hidden [mailto:freeride-
> address@hidden On Behalf Of Yohanes Santoso
> Sent: Wednesday, May 08, 2002 6:32 PM
> To: FreeRIDE Devel
> Subject: [FR-devel] modification to slot.
> 
> What do you think if slot delegates whatever msg it cannot understand
> to the data?
> 
> So, instead of saying:
> currBuffer = @bus["buffer/scratch:1"]
> currBuffer.data.insert_char(1, "hallo")
> 
> we use this:
> currBuffer.insert_char(1, "hallo")
> 
> YS.
> 
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