Hi,
I have got another problem. Let's say i have a
class A and a subclass B and both implement
interface C.
<class-descriptor class="C">
<extent-class class-ref="B" />
</class-descriptor>
<class-descriptor class="A">
<extent-class class-ref="B" />
</class-descriptor>
<class-descriptor class="A" table="a">
<field-descriptor name="id" column="id" ... />
<field-descriptor name="name" column="name" .. />
</class-descriptor>
<class-descriptor class="B" table="b">
<field-descriptor name="id" column="id" ... />
<field-descriptor name="somevalue" column="..." ... />
<reference-descriptor name="super" class-ref="A">
<foreignkey field-ref="id" />
</reference-descriptor>
</class-descriptor>
All I want to do is: select all objects which implement C with
a specified name of 'blabla'. I'm using ODMG and tried something
like this:
OQLQuery query = odmg.newOQLQuery();
String anfrage = "select x from C where name = 'blabla'";
query.create(anfrage);
query.exeute();
ojb now creates the following SQL statement:
select a0.id from b a0 where name = ?
Of course this will fail, because there is no such column in table b,
but i thought that ojb will automatically join it with table a, since
i told ojb in my repository.xml file that B is a subclass of A like
it is mentioned in the tutorial.
Did i unterstand something completely wrong here? How can I make it work?
thanks in advance
christof
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