[Kmymoney-devel] Online Banking Transfer

[christian-david at web.de]

Hello Developers,

I am around for a while and wanted to enrich KMyMoney with online banking 
capabilities – not only downloading statements but also sending transfers to 
the bank. This mail is going to be a lot of text so to the topic... One thing 
to mention: I am new to open source software development. So before I continue 
coding I wanted to ask you for your opinion on my approach.

A simple UML class diagram is attached. Described in words with reasons why I 
think this method is good:


Transactions

KMyMoney knows about all kinds of transactions (e.g. national transfers, SEPA-
transfers, other kinds of international transfers), and offers the UI to create 
these transactions. Each kind of transaction is represented by a class.

The online banking plugin tells KMyMoney which kind of transaction it supports 
for which account and restrictions for it (e.g. max. amount per transaction, 
number of purpose lines). But I do not know how to that at the moment.

This allows to integrate online banking in KMyMoney, e.g. a warning "Account 
xy dropped below minimum saldo.", can have a button to directly transfer money 
from another account to solve that issue.


accountIdentifiers

Furthermore I added the accountIdentifier classes. As far as I know only three 
types of account identifications are used (national, sepa, swift) - world wide.

In a later step these accountIdentifers can be added to payees stored in 
KMyMoney and used for a auto completion feature in the transaction gui 
(therefor they are separated from the transaction classes).

The class germanAccountIdentifier can be used to implement the validation of 
german account numbers and bank codes and to determine the bank name from the 
bank code.


At the moment my proposal is of interest for users with German bank accounts 
only, because only aqbanking supports transfers. However, my draft can be 
transfered to all other countries as well.


Are you interested?

The attached patch includes my start of the approach. It is very basic and 
does not use a lot of KMyMoney internals. Especially the implementation of the 
GUI is ugly. But the classes described above should be quite okay. Still it is 
far away from being able to be shipped to master.

Another question, can I use QML to create user interfaces? There aren’t any in 
the git repo, has this a special reason?

Looking forward to a discussion and any ideas and hints.

Greetings
Chris
-------------- next part --------------
A non-text attachment was scrubbed...
Name: classdiagram.pdf
Type: application/pdf
Size: 31380 bytes
Desc: not available
URL: <http://mail.kde.org/pipermail/kmymoney-devel/attachments/20130525/d5dd5886/attachment-0001.pdf>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: onlinebanking.diff
Type: text/x-patch
Size: 42639 bytes
Desc: not available
URL: <http://mail.kde.org/pipermail/kmymoney-devel/attachments/20130525/d5dd5886/attachment-0001.diff>