Hi Dave
The restrictions have been listed...sure in the ejb spec. But Please permit me
to point out a thought. All the restrictions listed there are clearly only for
the BEANS. Nothing is mentioned for the supporting classes and all of my
questions pertain to that.
If you have deleted my previous mail here are the questions again
Questions
---------------------------------------------------
Hi
I have a some Questions . Could somebody kiindly clarify?
To begin with let me define the terms used in the questions.
A} Supporting class --- A Utility class in the same package as the BEAN
class
B} "class in the system"--A Utility class in the same package as the
BEAN class and the supporting class
The Questions are:
1} Can you call a static method of a supporting class from your Bean
class ?
2} can your supporting class call a static method another class in the
System??
3} Should the methods of the supporting class be PUBLIC ONLY or can
they have PACKAGE visibility??
4} can your bean access a synchronized method of a supporting class?
5} Can a supporting class access a synchronized method of another class
in the system??
could you kindly clarify these !
thank you
arava
Dave Wolf wrote:
> Arava,
>
> I dont plan to re-open the can of worms about what you can and cannot do in
> relation to restrictions placed in section 18.1.2 of the EJB 1.1
> specification. I will only say that these restrictions exist to allow for
> portability of your EJB's across multiple vendors containers and if this is
> a requirement or need, you should avoid these restrictions completely. If
> it is not a need, proceed at your own discretion.
>
> As for the IllegalAccessError this is likely caused by a ClassLoader
> conflict where one class is being loaded by a custom ClassLoader and another
> by the system ClassLoader. You will have to ask your container vendor how
> they handle this.
>
> <vendor>
>
> For instance in Sybase EAServer we allow you to list for each bean which
> classes, packages or JARs should be loaded by which the system or custom
> ClassLoader.
>
> </vendor>
>
> The issue is that two classes loaded by differing ClassLoaders are
> incompatable.
>
> Dave Wolf
> Internet Applications Division
>
> ----- Original Message -----
> From: "arava" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, November 16, 2000 5:58 AM
> Subject: EJB Questions!
>
> > Hi
> >
> > I have a some Questions . Could somebody kiindly clarify?
> >
> > To begin with let me define the terms used in the questions.
> >
> > A} Supporting class --- A Utility class in the same package as the BEAN
> > class
> >
> > B} "class in the system"--A Utility class in the same package as the
> > BEAN class and the supporting class
> >
> > The Questions are:
> >
> > 1} Can you call a static method of a supporting class from your Bean
> > class ?
> >
> > 2} can your supporting class call a static method another class in the
> > System??
> >
> > 3} Should the methods of the supporting class be PUBLIC ONLY or can
> > they have PACKAGE visibility??
> >
> > 4} can your bean access a synchronized method of a supporting class?
> >
> > 5} Can a supporting class access a synchronized method of another class
> > in the system??
> >
> > For some of the above problems I am getting IllegaAccessError.
> >
> > could you kindly clarify these !
> >
> > I thank you in anticipation
> >
> > Thank you
> > Arava
> >
> >
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> body
> > of the message "signoff EJB-INTEREST". For general help, send email to
> > [EMAIL PROTECTED] and include in the body of the message "help".
> >
> >
>
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