Re: EOGenerator Docs?
Re: EOGenerator Docs?
- Subject: Re: EOGenerator Docs?
- From: Mike Schrag <email@hidden>
- Date: Thu, 29 May 2008 01:29:17 -0400
where can I read about when to use addToClasses vs
addToClassesRelationship
, when to use setClass vs setClassRelationship
If you're not using automatic inverse relationship updating from
Wonder, addToClasses and setClass set only one side of the
relationship (meaning, person.setCompany(company) would set the
company of "person" but would not update company.employees()). The
xxxRelationship, however, DO set both sides (regardless of whether or
not you use Wonder's relationship updating). This is especially
important to consider if you bind a WOPopUpButton "selection" to a to-
one relationship, because it will only set one side (leaving you with
an inconsistent graph). With automatic relationship updating in
Wonder, both of these methods are equivalent (setCompany adds to both
sides just like setCompanyRelationship).
, and what does the "fetch" parameter do in the calls that return
related objects in one to many relationships (just to name a few
questions)?
"fetch" will construct a fetchspec and fetch the relationship instead
of traversing the to-many via EOF relationship faulting. The benefit
here is that for high cardinality relationships, you can avoid
faulting in the entire set of related objects and instead just fetch
with a qualifier on a subset of them.
ms
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