unless all objects are mapped to the same table, in which case it's optimized to do it
in one query.
hth, m
-----Original Message-----
From: Jakob Braeuchi [mailto:[EMAIL PROTECTED]]
Sent: Fri 1/17/2003 8:37 AM
To: OJB Users List
Cc:
Subject: Re: Load an object from an extent
hi david,
ojb will do a query for each concrete class-descriptor (table must be
specified) and present the result in one collection.
hth
jakob
[EMAIL PROTECTED] wrote:
>If I declare an extent like this:
>
><class-descriptor class="foo.model.specification.file.FieldItem">
> <extent-class
class-ref="foo.model.specification.output.CustomFieldItem"/>
> <extent-class
class-ref="foo.model.specification.output.DomainFieldItem" />
> <extent-class class-ref="foo.model.specification.input.InputField" />
></class-descriptor>
>
>And their are seperate class-descriptors for each sub-class. When I try to
load an object that is a "FieldItem", specifying it's OID, how does OJB
>work?
>Does it just try each table until it finds a hit?
>
>David Corbin
>
>
>
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