Hi Tomaso,
On Jan 10, 2008 11:42 PM, Tomaso Tosolini <[EMAIL PROTECTED]> wrote:
>
> > I like 1 as well, because it allows admins to change their mind later
> > and choose another behaviour. But that would mean that the Workitem /
> > Field classes are able to answer to queries, even when having a
> > heterogeneous set of workitems.
> >
>
> To be able to "wi has a field named x?" when saving and updating wis, we
> can make this:
>
> wi.attributes = ifw.attributes
> wi.field_keys = (ifw.attributes.keys.collect { |x| x.to_s }).join( " " )
> # a supplemetary TEXT column
>
> so that
> select workitems.* from workitems where field_keys LIKE PATTERN
> should be fine,
>
> uses more disk space and it's not one of the best pieces of code ever
> written but should work ( and further this may be an idea to dump all the
> attributes "key paths" to this suppementary field.... so that one can also
> make "recursive searches" at once)
OK, what about forgetting about queries for the "without field table" version ?
> > We could use variant 2 and have a rake task to migrate workitems to
> > the without field version and vice et versa.
>
> It's possible, but i don't like this too much.
OK, let's forget it.
If I recapitulate :
- the new ActiveParticipant may read both style of stored workitems
- it can query only the old "with field table" workitems, queries on
new workitems will return [] (empty array)
- the integrator/admin/developer decides which version he wants to use
when instantiating the participant
- the default is the current behaviour
- we will learn the rest as we (you) go
Wdyt ?
--
John Mettraux -///- http://jmettraux.openwfe.org
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