Andrew, thanks a lot for the prompt reply.
> -----Original Message----- > From: Clute, Andrew [mailto:[EMAIL PROTECTED] > Sent: Monday, August 08, 2005 9:21 PM > To: OJB Users List > Subject: RE: OJB question - "reference counter" field > > > In a word: no. There is no straight forward way to do what you > want to accomplish. > > Obviously you can manage that yourself by setting the value to > the size of the collection before saving, and then having that > field in the database. I don't want the collection of Bs to be in the A class at all - just the size. > At first I thought a field conversion might work, but it has no > context to look at other fields. > > You can write a custom row reader for this object type that looks > at the other field and populates the size variable. But you are > still going to have to manage that field yourself when the > collection is mutated. > > Take a look at: > > org.apache.ojb.broker.accesslayer.RowReader OK, thanks, it should be a solution. Yours sincerely, Andrey. > > -Andrew > > > -----Original Message----- > From: Andrey Shulinskiy [mailto:[EMAIL PROTECTED] > Sent: Mon 8/8/2005 9:01 PM > To: ojb-user@db.apache.org > Subject: OJB question - "reference counter" field > > Hi there! > > I am quite new to OJB and I'd really appreciate if anybody could help me > with the following issue. > > The case is rather simple: > tables A and B have the 1 - N relationship. And I want the objects of the > class A have not the collection of the related objects B but just > the number > of such objects: > > class A { > ... > private Integer bCounter; > ... > } > > So the questions are - is it possible in OJB and if it is then > how could it > be done? Is it just some kind of mapping ore something more complicated? > Thanks. > > Yours sincerely, > Andrey Shulinskiy. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
