Armin Bauer wrote:
I was not clear enoughWhy not using the VCard 3.0 data model and use that to convert from/to anything else, including Palm.
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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