Re: Evo2 <-> Siemens S55

Armin Bauer wrote:

>>Why not using the VCard 3.0 data model and use that to convert from/to 
>>anything else, including Palm.
> 
>
I was not clear enough
> 3 reasons:
> 
> - the vcard standard does not support all available fields from other
> formats (for example custom fields of a palm). The standard we choose
> HAS to support everything

we can add extensions in our data model to handle what we want. It is 
just an array of key/value pairs.

> - it is hard to parse. There are no good free parsers for the vcard
> standard

I talked about data model, not file format :-) A bunch of struct in 
memory WITH object persistence for storage.
A record contain fields (named by a string) and each field can have 
attributes (key/values, the same way). Then we synchronize the records 
comparing the fields.

We would use it like this

OSRecord my_record;

// add a bunch of fields
my_record.addField("name", "foo");
my_record.addField("phone", "+1 555 555 5555");
// set attributes for phone field
my_record["phone"].addField("type", "home");
// add a field with a unique UID
my_record.addField("uid", genUID());
// tell this field is the UID of the record
my_record.setUidField("uid");


> - it is not flexible

Ours would be. See above

> 
> my vote therefore goes to a xml based standard that will be used in
> opensync unless someone convinces me of something better of course :)

xml could be for storage and/or persistance. This does not define any 
data model but just a data format.
You would do something like

my_record.loadFromXML(xml_string);
my_record.saveToXML(xml_string);

> 
> And it should also be possible to implement some sort of "merge" algo
> for the format we choose. Although we dont need this in the beginning,
> we definetly need the later.

We can have a generic merge algorithm for the above records. This still 
require that we have a local copy on disk to handle case where the same 
record is modified on both sides. It would also allow n-way sync merge 
(sync evo + palm + phone in one round).


Hub


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