storing From and Subject in xapian

[servilio]

On 12 May 2011 04:39, Istvan Marko <notmuch at kismala.com> wrote:
> Stewart Smith <stewart at flamingspork.com> writes:
>
>> Would it be possible to progressively fill the DB with the new data?
>>
>> i.e.
>>
>> if Subject/From not in db for message
>>    add Subject/From for this message to DB.
>
> I started looking into this but then realized that notmuch search opens
> the database in read-only mode so it cannot make updates. It might be
> desirable to keep it that way for safety and locking reasons.

What about the following:

- increase NOTMUCH_DATABASE_VERSION[1]
- update notmuch_database_upgrade[2] to fill in the new data for the
documents missing it
- include an upgradedb command that wraps notmuch_database_upgrade[2]
- have notmuch search prints a warning about running a DB version less
than the runtime and suggests running upgradedb

Regards,

Servilio

[1] http://git.notmuchmail.org/git/notmuch/blob/HEAD:/lib/database.cc#l39
[2] http://git.notmuchmail.org/git/notmuch/blob/HEAD:/lib/database.cc#l765