This is a good time for me to ask why do the spec authors require the return
type to be the bean class.
I ran into this problem with create method on home. I needed an adapter on
the client , wanted to use polymorphism to provide a method
createEntity(String entityname) and I was *forced* to use reflection to
execute the createMethod().
Why don't we have the return type as EntityBean . I know that would mean
more casting but I would think that as better than using reflection when
implementing polymorphism or end up discouraging polymorphism.
Same applies for the finder method .
I think I'm missing something but can't figure it out.
p.s Actually I would have the same question for java experts - why not have
a overridding method have a different return type as long as it's subclass
of the return type of the overridden method.
> -----Original Message-----
> From: A mailing list for Enterprise JavaBeans development
> [mailto:[EMAIL PROTECTED]]On Behalf Of Vlada Matena
> Sent: Friday, March 26, 1999 8:00 AM
> To: [EMAIL PROTECTED]
> Subject: Re: findByPrimaryKey
>
>
> We want the signature of the findByPrimaryKey to have the exact types
> for the input argument and the return value. This makes it impossible to
> include the method in the home interface because each enterprise bean
> needs a different signature.
>
> Vlada
>
> -----Original Message-----
> From: Saurabh Sahai <[EMAIL PROTECTED]>
> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> Date: Thursday, March 25, 1999 10:03 PM
> Subject: Re: findByPrimaryKey
>
>
> >Thanks Vlada.
> >
> >>Yes, the home interface of every entity bean must have the
> >>findByPrimaryKey method, and every entity class with bean
> >>managed persistence must define the ejbFindByPrimaryKey
> >>method.
> >>
> >>The implementation of the ejbFindByPrimaryKey should verify
> >>that the entity with the given primary key exists.
> >>
> >
> >
> >That is precisely what my point is. If every BMP entity bean has
> to have an
> >ejbFindByPrimaryKey method, should'nt this be a method on the EntityBean
> >interface. (Maybe we need a BMPEntityBean class).
> >
> >I am saying this because from a container's point, even though
> the container
> >knows that it is dealing with a BMP entity bean, it cannot do
> something like
> >:
> >
> > EntityBean bean;
> > .........
> > bean.ejbFindByPrimaryKey(...)
> >
> >It will need to use reflection to get the find method and invoke it.
> >
> >Thanks.
> >
> >-Saurabh
> >
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> >
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