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Re: transient fields

On Mon, 21 Aug 2000, Lars Steiger wrote:
> ok, this is really a simple and straight forward way -
> 
> ... but ...
> iif I want to set this field through a methode like setTransientField(
> TransientField tfield ) I get a java.io.NotSerializableException ... I guess
> because this class (TransientField) was not postprocessed by myself.
> 
> ... conclusion of a rookie ...
> iis it right that every class that appears inside the interface of a persistent
> capable class must be postprocessed, but if I define this class with the keyword
> 'transient', while using it as field, it will not become persistent ...

You are mixing independent things together.

1. In order to allow ozone to send parameters of a remote method call thru
the wire, all classes that are used as remote method parameters have to be
Serializable. No postprocessing ist needed.

2. If you declare a field 'transient!, then it is transient no matter if it is
Serialiable or not. But if the field is _not_ transient, then it _must_ be
Serializable.

3. Postprocessing (OPP) is needed for independent database classes only. These
are classes that provide an OzoneRemote interface and that are directly accessed
from the client or another database object.

Does this clarify things a bit?


Falko

> 
> greetings and thanks again
> lars
> 
> Falko Braeutigam schrieb:
> 
> > On Mon, 21 Aug 2000, Lars Steiger wrote:
> > > hi
> > >
> > > I try to do my first steps with ozone. after consulting all
> > > documentations and reading
> > > the messages of this mailing list, I didn't find anything about how to
> > > define transient fields in objects. Does anyone know more about this
> > > theme ?
> >
> > ozone relies on Java serialization. So the most simple way to declare a field
> > transient is to add the 'transient' keyword to the field declaration.
> >
> > Falko
> > --
> > ______________________________________________________________________
> > Falko Braeutigam                              mailto:falko@smb-tec.com
> > SMB GmbH                                        http://www.smb-tec.com
-- 
______________________________________________________________________
Falko Braeutigam                              mailto:falko@smb-tec.com
SMB GmbH                                        http://www.smb-tec.com