On 10/30/10 11:02 AM, Jacek Kałucki wrote:
> Użytkownik John Fabiani napisał:
>> I'm directing this off line as to not embarrass myself.
>>
>> I always read your posts with interest. But in this case could you explain a
>> little more. I'm not sure what you mean by "interference" with respect to
>> python or Dabo. It could be that my ignorance is showing. A google search
>> of
>> "Python interference" reveals nothing that makes sense here. I also checked
>> "python inference" and discovered several entries. Yet I'm not sure how they
>> apply.
>>
>
> For example, actual matter I'm working on.
> I have a virtual filed which refers to PostgreSQL
> large objects.
> Ok, but how to write LO to the backend, since Dabo
> doesn't support writeable virtual fields?
> Solution seems to be simple, just overwrite dBizobj.setFieldVal().
> Unfortunately it could be deceiving, because field accessing
> methods in dBizobj works at this class level,
> while dBizobj.Record refers directly to raw, cursor data row.
> This is why dBizobj.setFieldVal("field", val) isn't the same
> as dBizobj.Record.field = val.
> I see that in Dabo examples, you use both access methods
> interchangeably and in most cases they are, but it's not the same.
> So, my only notice is, there should be a clear information
> with dBizobj.Record property, it doesn't refer to business
> layer by no means.
Ok now I understand what you are saying, and you are right.
Case 1:
biz.Record.cust_name = "ABC"
|
cur.setFieldVal("cust_name", "ABC")
Case 2:
biz.setFieldVal("cust_name", "ABC")
|
cur.setFieldVal("cust_name", "ABC")
I'd need to give it a little more thought, and see some opposing viewpoints,
but
right now it seems to me we should consider reworking it so that we have:
biz.Record.cust_name = "ABC"
|
biz.setFieldVal("cust_name", "ABC")
|
cur.setFieldVal("cust_name", "ABC")
...especially since there's no good way to subclass dCursor.
Paul
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