Re: Re: help, please

On Thu, 2004-07-08 at 11:48, Gabi M. wrote:
> >First of all, there is less than 24 hours between your mail and an
> >almost identical previous mail. A lot of people I know would consider
> >this to be very rude and put you on their permanent black-list.
> 
> I am really sorry, I sent the email twice because when I looked at the user list I found 
> my message was empty. So I think the first time I made a mistake. Sorry again.

There was one empty one, send tue 9:09 PM and a 'filled' one, tue 9:10
PM.

> >Second, you say you want to use 2 new frameworks and you do not know how or what. I 
> >have seen projects fail that had only 1 new framework and no sense of direction...
> >Third, it is literally impossible to give a good answer to your questions; they are
> >overly broad and too vague. The only advice I can give you:
> >1a) write decent user requirements
> >1b) write acceptance tests
> >2) write decent system requirements based on 1)
> >3) write a decent design based on 2)
> >4) write a prototype (that partially passes 1b)) to test 3)
> >5) write app
> >Cheers,
> >Leo
> 
> I know what I want to do but I am not sure how. I will try to explain it more clearly.
> For the jsf part (presentation), I want to use the proxy objects as backing beans but I am
> not sure it is the best way. May be there is an an other better design (eg, binding to
> other beans).
> For the spring part (logic), I will need to access, create, modify, delete... objects in
> the database. I plan to use the proxy objects directly as DTOs. Is it a design error?
> There is an "incompatibility" with the proxy object concept or implementation. I want to
> use spring because I dont want to deal with EJBs and I need some cool features powered by
> this framework (IoC, AOP...). 
> For the ozone part (persistence), I need to link persisted objects with other persisted
> objects and other xml persisted files. What is the best way to achieve this? Collections
> (arrays, lists, sets...) for objects? An object  property containing the URI for xml files?

It is literally impossible to give a good answer to your questions; they
are overly broad and too vague. The only advice I can give you:
1a) write decent user requirements
1b) write acceptance tests
2) write decent system requirements based on 1)
3) write a decent design based on 2)
4) write a prototype (that partially passes 1b)) to test 3)
5) write app

> One new question since yesterday, I want to load or store an object with nested and linked
> objects but I dont want the nested or linked objects to be loaded or stored everytime the
> enclosing object is accessed. I want it only when the nested or linked object is required
> or needed.

Ozone only loads (clusters of) objects that are really needed. There is
nothing extra you need to do in order to make use of this functionality.

>  How can I do (I have to use an arraylist)? I read a bit in the faq section of
> the tutorial but it didnt help me. Is it solved using the Ozone types
> (OzoneArrayList...)? I thought that an array stored the references to other objects not
> the linked objects. Is this behaviour due to serialization when retrieving or storing
> database objects?
>
> These questions are certainly obvious for most of you but it is difficult for a beginner
> to assimilate all these concepts in a short time. 

Again, using 1 or more new paradigms in a project while you do not have
a clear focus on where to go is a recipe for failure IMHO.

Cheers,
Leo




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