Dave,
Can you deploy a prepackage entity bean as CMP? If so can you do this against
an existing database?
This type of functionality is fundamentally important for companies that want to
redeploy an existing EJB applications from one brand of EJB server into
another. When redeploying, the new server must be able to support existing
beans and an existing database. Not many servers can do this with CMP entities.
Richard
--
Richard Monson-Haefel
EJB Expert for jGuru.com
( http://www.jguru.com )
Author of Enterprise JavaBeans
Published by O'Reilly & Associates
( http://www.ejbnow.com )
Dave Tillman wrote:
> Robert,
> Let me explain how the Secant EES/EJB product does what you have asked
> below. We provided CMP as part of EES/EJB.
> <vendor>
> With our product you start with an object model defining all of your
> classes, including session beans, entity beans, sub-objects, etc. You can
> specify this model in UML using Rose or it can be specified using our Object
> Description Language(ODL). In either case, as a part of the specification,
> you provide implementation details describing how you would like the model
> persisted into relational tables. This class-to-database mapping
> specification is very flexible, allowing various subsetting and supersetting
> techniques all under your control.
>
> >From these details, we are able to initially create the DDL for the
> database, and also create a meta-data description file which is used by our
> Persistent Object Service & EJB Container at runtime in conducting the
> mapping based on your specification.
>
> BTW, we are also able to go the reverse direction. Start with an existing
> database, derive the beginnings of an object model, etc.
> </vendor>
> Hope that helps.
>
> DaveTillman
> Secant Technologies
> www.secant.com
>
> ----- Original Message -----
> From: Robert Nicholson <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, November 09, 1999 12:30 AM
> Subject: Container supported persistence... mapping?
>
> > With the EJB projects that currently support container supported
> > persistance. I assume sybase's and oracle's do. How is the mapping
> > b/w the persistence properties of the bean and the schema of the database
> > specified?
> >
> > Is schema generated from class definitions of the bean?
> >
> >
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> >
>
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