[Kmymoney-devel] Re: New Java project and a currency query

[Andrew Heald]

Thanks, Thomas. Your explanation makes sense. I think it's enough to get me going and I realise this is why most currencies have 100, 100, 100 as the values because they have pounds/dollars and pence/cents.

A bit of background: I save from KMyMoney as straight XML, rather than compressed, and write my files into an auto-versioning Subversion repository via a WebDAV mount (http://oreilly.com/opensource/excerpts/9780596510336/webdav-and-autoversioning.html). I do it this way so I can use a number of KMyMoney instances to edit the same data without getting mixed up as to content. It's also easy to roll back if I mess up, and it's sometimes interesting to see the history. I'm also running my own private Wiki, to which I auto-publish some generated pages.

The first idea is to add a job to my Jenkins build server (http://jenkins-ci.org) that will fire up whenever KMyMoney data is saved to the repo, detecting the Subversion commits. It will summarise the data in various ways and turn it into a set of up to date report pages, and maybe spreadsheet attachments, which I can look at when I don't have KMyMoney to hand. The reports will be on things like unreconciled transactions, budget performance and cash flow.

After that I'm considering a simple web app or Wiki plugin to enter cash transactions "on the run". This would be a Subversion client and commit with a real log comment to make it easy to spot these transactions in the history and tweak the details when back at base if they need cleaning up.

I've also some half-baked ideas around budget management that are too ill-defined to be of any use yet.

As much as I can I'll turn ideas I have into feature requests for KMyMoney itself.

Best wishes,
Andrew.

On 14 Feb 2011, at 18:44, Thomas Baumgart wrote:

> Hi,
> 
> on Monday 14 February 2011 16:27:41 Andrew Heald wrote:
> 
>> Hi All,
>> 
>> I've joined the list after becoming an avid KMyMoney user. Greetings to
>> you all. Great OSS product.   :-)
>> 
>> I have a few "extras" that I want to implement, and being a Java
>> developer I've written some code to read and update the XML files used
>> by KMyMoney. The code (early days yet) is at
>> http://github.com/sappho/kmymoney4j if anyone else is interested in
>> using it or collaborating.
> 
> Can you explain a bit more what it does / is good for, please?
> 
>> To this end I have a question about the
>> attributes of the CURRENCY items in the XML. Can anyone point me to
>> definitions of the "saf", "ppu" and "scf" attributes. I'll probably get
>> there by guessing in the end but it would be much easier if someone
>> could, in particular, let me know how I can use these attributes to code
>> up currency conversions.
> 
> I can certainly give it a try:
> 
> saf: smallest account fraction
> scf: smallest cash fraction
> ppu: parts per unit
> 
> scf and ppu are only used for currencies not other securities.  From what I 
> remember the ppu information is currently unused but is setup.
> 
> They are not used for currency conversions but rather give you information 
> about the smallest fraction that can be stored in a specific account. My 
> favorite example is the Hungarian Forint:
> 
> scf is 1
> ppu is 1
> saf is 100
> 
> which means they deal with one Forint as the smallest coin, but in your 
> checking account, the bank maintains 100th of a Forint as well. Other non 
> standard values can be found with some currencies used in the middle east.
> 
> The list of currencies can be found in kmymoney/views/kmymoneyview.cpp
> 
> 
> -- 
> 
> Regards
> 
> Thomas Baumgart
> 
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