IMHO, it is unwise to be using EJB2.0 dependent objects at this point
because this is a part of the spec which is likely to change wildly.
There have even been significant changes between pd1 (when Orion's
implementation was built) and pfd.
You can circumvent the relationship table by creating a unidrectional
relationship from Phone to Person and a finder method for Phone which is
"findByPerson". If you put a getPhone() method on Person, it can hide
the call to the finder on Phone.
Jeff
>-----Original Message-----
>From: Alex Paransky [mailto:[EMAIL PROTECTED]]
>Sent: Monday, March 05, 2001 10:37 PM
>To: Orion-Interest
>Subject: RE: Problem retrieving dependents after Orion restart
>
>
>Has any one been able to get the Entity(1) to Dependent(N) relationship
>working? I am thinking of removing Dependent objects and just
>using Entity
>Beans. However, in the way Orion handles relationships, I will have an
>extra table I do not really need.
>
>If I have a PersonEntity relating to PhoneEntity in a 1-N
>scenario, then
>Orion attempts to create PersonEntity-PhoneEntity join table.
>Is there a
>way to modify orion-ejb-jar.xml to avoid this type of scenario. All my
>Entities are identified with integer key, so my phone table
>simply contains
>a field called 'ownerId'. Different types of entities can
>have phones, but
>since all the entities are identified with the same type of
>primary key, I
>can store that in the 'ownerId' field in the phone table.
>
>Thanks.
>-AP_
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED]]On Behalf Of Alex Paransky
>Sent: Monday, March 05, 2001 6:13 PM
>To: Orion-Interest
>Subject: RE: Problem retrieving dependents after Orion restart
>
>
>Here is an excerpt from orion-ejb-jar.xml, can someone tell me
>if I have
>something configured incorrectly. Again, the data is properly
>written to
>the database, it is just NOT READ when orion is restarted and
>getPhoneDependents() api is executed.
>
><entity-deployment name="ejb.person.PersonEntity"
>location="ejb.person.PersonEntity"
>wrapper="PersonEntityHome_EntityHomeWrapper33"
>table="ejb_person_PersonEntity" data-source="jdbc/siteDS">
> <primkey-mapping>
> <cmp-field-mapping>
> <fields>
> <cmp-field-mapping name="id" persistence-name="id" />
> </fields>
> </cmp-field-mapping>
> </primkey-mapping>
> <cmp-field-mapping name="salutation" persistence-name="salutation" />
> <cmp-field-mapping name="name" persistence-name="name" />
> <cmp-field-mapping name="email" persistence-name="email" />
> <cmp-field-mapping name="phoneDependents">
> <collection-mapping table="ejb_phones">
> <primkey-mapping>
> <cmp-field-mapping>
> <fields>
> <cmp-field-mapping name="id" persistence-name="id" />
> </fields>
> </cmp-field-mapping>
> </primkey-mapping>
> <value-mapping type="ejb.person.PersonPhone">
> <cmp-field-mapping name="value">
> <properties>
> <cmp-field-mapping name="id" persistence-name="id" />
> <cmp-field-mapping name="number"
>persistence-name="number" />
> <cmp-field-mapping name="person">
> <entity-ref home="ejb.person.PersonEntity">
> <cmp-field-mapping name="person">
> <fields>
> <cmp-field-mapping name="id"
>persistence-name="ownerId"
>/>
> </fields>
> </cmp-field-mapping>
> </entity-ref>
> </cmp-field-mapping>
> </properties>
> </cmp-field-mapping>
> </value-mapping>
> </collection-mapping>
> </cmp-field-mapping>
> <ejb-ref-mapping name="ejb/id" />
></entity-deployment>
>
>Again, the ejb.person.PersonEntity has a 1 to N relation with dependend
>ejb.pers.PersonPhone.
>
>Thanks.
>-AP_
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED]]On Behalf Of Alex Paransky
>Sent: Monday, March 05, 2001 1:18 PM
>To: Orion-Interest
>Subject: Problem retrieving dependents after Orion restart
>
>
>I have an entity bean with 1-N relationships to dependents. I have two
>clients, the first client executes a method on a session that
>populates and
>works with the data. The second client tries to access the
>data. When I
>run the first client followed by the second client, second client works
>correctly. When I run the first client, then RESTART ORION,
>then run second
>client, second client fails to find dependents (but they are
>there, in the
>table).
>
>Here is the output:
>
>Orion/1.4.7 initialized
>Create person entity
>Add phone1
>Add phone2
>Add phone3
>Phone: 8551 (818) 541-0029 1
>Phone: 8552 None 2
>Phone: 8553 (310) 880-5962 3
>Deleting last phone
>Phones: [Lejb.util.Value;@44006e
>
>[apara@junior orion]$ ./go
>Orion/1.4.7 initialized
>Phones: null
>
>First we create a new person entity, set the phones
>(dependents), then list
>the phones, finally delete the last phone. Then restarting
>orion, we try to
>lookup the phone dependents. Phones returns as null. The
>table contains
>correct values. Phones ARE there.
>
>What could be wrong?
>
>-AP_
>
>
>
>
>
