[Neuclear-develop] Portfolio Manager et al

[Pelle B. <pe...@ve...>]

Deneb,
I'm replying to the mailing list so we can document the requirements 
publically.

The requirements as far as I see it is to:
- Record all transactions for various accounts across asset types
- Provide balance information and more

Lets take an example flow of transactions here:

Payor	       	Payee		Asset		Amount
Bob		Alice			bux		100
Bob		Carol			shoes		1000
Alice		Carol			bux		50
Carol		Alice			shoes		5

We assume that Bob had an initial balance of 200 bux and 1000 shoes.
Alice and Carol had zero initial balance of either asset.

Now the bux asset controller maintains a ledger of transactions within it's 
own asset. So it has the following of the above transactions:

Bob		Alice			bux		100
Alice		Carol			bux		50

So bux has the following balances afterwards:

Bob: 100
Alice: 50
Carol : 50

The shoe asset controller similarly maintains a ledger of it's own 
transactions:

Bob		Carol			shoes		1000
Carol		Alice			shoes		5

Shoe maintains the following balances afterwards:

Bob: 0
Alice: 5
Carol : 9995

Bob could check his balances on each of the asset controllers there, but it 
would make more sense if he had a portfolio manager locally or on a server 
that he trusted to do the accounting for him. This is where the Portfolio 
Manager comes in.

The Portfolio Manager listens to all of Bob's transactions regardless of asset 
and stores them in it's own ledger. So of the transactions above the 
Portfolio stores the following in the ledger:

Bob		Alice			bux		100
Bob		Carol			shoes		1000

With this Bob can immediately see his balances in all of his assets as being:

bux: 100
shoes: 0

The portfolio manager is not only important to end users, but also in mutual 
fund style applications, where all the funds holdings could be held on a 
public server. The share holders of the fund could go in and view in real 
time the holdings of the fund.


Now, my original plan was to have a separate portfolio manager. However I just 
realized that with the recent changes to the LedgerController. There is no 
real need for it. The current Auditor will actually do the whole thing 
without changes. What we may need are some changes to the reports generated 
afterwards. I will have to have a look.

So it seems like we dont actually need a separate PortfolioManager class after 
all. Which means we can go straight to the DistributionController.

-P



On Thursday 13 May 2004 23:32, you wrote:
> Hi
>
> Potfolio manager
> I was searching this class .. it doesnt seem to be
> there yet
>
> Is portfolio like the place for all assets, so do we
> have to create a db where all the assets would be
> stored
>
> for micro payments
> what assets would we have
> like its diffcult for me to understand due to lack of
> finance knowlesge
>
> can u explain me the proto-type so that i can
> understand better like
> -- what all are we trying to exchange
> -- is it a pre-paid kinda micro payment or a normal
> one
>
>
> can u guide me about portfolio manager [which package
> and responsibility ]
>
> regards
> deneb
>
>
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