auto-insert attribute of reference/collection descriptor
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Key: OJB-36
URL: http://issues.apache.org/jira/browse/OJB-36
Project: OJB
Type: Improvement
Components: PB-API
Versions: 1.0.3
Environment: Windows XP Pro, Java 1.4.2
Reporter: Bobby Lawrence
Currently , there are "auto-retrieve", "auto-update" and "auto-delete"
attributes for reference/collection descriptors. Auto-retrieve tells OJB to
retrieve a reference or collection when its parent is instantiated.
Auto-delete tells OJB to delete a reference or collection when its parent is
deleted (much like cascade-delete). Auto-update tells OJB to insert OR update
a reference or collection when its parent is inserted or deleted.
I would like to see an "auto-insert" attribute. Basically break out the logic
from "auto-update" into an "auto-insert" and an "auto-update". The
"auto-insert" would tell OJB to insert the reference when its parent is updated
or inserted. The "auto-update" would tell OJB to update the reference when its
parent is updated or inserted.
The current way causes some headache it seems.
I have a WAR that uses OJB for its backend.
Say I have a Person object that contains a reference to an Organization object.
In the repository.xml, auto-update is set to "object". Basically, if the
Organization doesn't exist, I want OJB to add it. If it exists alreay, I don't
want OJB to do anything.
Say I have a JSP where a user can update the Organization of the Person. I
want to display all the organizations in a select box with the OrganizationId
as the value to pass to the next step. Now, in the next step, if I don't
lookup the Organization for that id, but just call PBroker.store(Person w/
Organization that only has id), OJB will update the organization table for that
organization id and set all the other fields to null.
It would be nice if I could tell OJB to insert when it needs to and update when
it needs to. Basically break the logic out.
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