Thanks very much, after reading your comments I check the EJB
persistence spec:
/"If the entity has field-based access, the persistence provider runtime
accesses instance variables
directly. All non-transient instance variables that are not annotated
with the Transient
annotation are persistent. When field-based access is used, the
object/relational mapping annotations
for the entity class annotate the instance variables."
/Thanks again for the pointer, next time I will make sure I read the
docs properly :D
Cheers
Kenenth
Gordon Yorke wrote:
> Hello Kenneth,
> All you need is the @Transient annotation. In the case of field
> access your code would appear like:
> @Entity
> class StaffMember{
> @Transient
> private Credentials credentials; //<-- I want to ignore this.
>
> public Credentials getCredentials(){
> //impl
> }
> public void setCredentials(Credentials value){
> //impl
> }
>
> }
>
> --Gordon
>
> -----Original Message-----
> *From:* Kenneth Clark [mailto:kenneth_at_rabiddog.co.za]
> *Sent:* Monday, January 08, 2007 11:02 AM
> *To:* users_at_glassfish.dev.java.net
> *Subject:* Persistence, ignoring a class field
>
> Hi all
>
> I have search high and low and cannot figure this out.
> I have to classes, one for a StaffMember and another one
> containing the credentials for the staff member. The reason I
> decided to separate them is because the staff member details are
> stored in an SQL DB and the user details are stored inside and
> LDAP server.
>
> I would like to map the staff member as an entity and tell the
> entity to ignore the credentials.
>
> Now I see no "Ignore" or anything similar annotation.
>
> I have accessors for the credentials prefixed with get and set. I
> assume the annotation processing engine looks at the get and set
> prefixes to derive the fields/properties it needs to persist.
> Would prefixing the accessors with something other than get or set
> make the engine ignore the methods? Is there a less contrived way
> of doing this?
>
> @Entity
> class StaffMember{
> private Credentials credentials; //<-- I want to ignore this.
>
> public Credentials getCredentials(){
> //impl
> }
> public void setCredentials(Credentials value){
> //impl
> }
>
> }
>
>
> Thanks for all your help
> Kenneth
>
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