Updating with more information...
I have a class:
public class DatedList extends ArrayList {
// a few new methods
}
I have another class:
public class AccountTeam {
// my collections
private DatedList salesReps = new DatedList();
private DatedList accountManagers = new DatedList();
private DatedList accountRelationsAssociates = new DatedList();
// More attributes and methods
}
This is my mapping document:
<class-descriptor
class="com.lmig.pm.affinity.model.client.account.AccountTeam"
>
<collection-descriptor
name="accountManagers"
element-class-ref="com.lmig.pm.affinity.model.client.account.AccountMana
ger"
auto-update="true"
>
<inverse-foreignkey field-ref="accountTeamId" />
</collection-descriptor>
... more fields/collections
</class-descriptor>
I can persist the objects just fine like this. However when I retrieve
the object I get the following error:
[5/17/05 15:38:14:182 CDT] 1ce4da30 SystemOut O [PersistentField]
ERROR: while set field:
[try to set 'object value' in 'target object'
target obj class: com.lmig.pm.affinity.model.client.account.AccountTeam
target field name: accountRelationsAssociates
target field type: class com.lmig.pm.affinity.util.DatedList
target field declared in:
com.lmig.pm.affinity.model.client.account.AccountTeam
object value class:
org.apache.ojb.broker.util.collections.RemovalAwareCollection
object value: [null(N1000000)]
]
[5/17/05 15:38:14:203 CDT] 1ce4da30 SystemErr R
org.apache.ojb.broker.metadata.MetadataException: IllegalAccess error
setting field:accountRelationsAssociates in
object:com.lmig.pm.affinity.model.client.account.AccountTeam
So I figured I could redefine my collections like this:
private List accountManagers = new DatedList();
private List accountRelationsAssociates = new DatedList();
private List salesReps = new DatedList();
This way also persists fine, but new I get this error when retrieving
the objects from the database.
[5/17/05 15:45:30:910 CDT] 3f081a3b SystemErr R
java.lang.ClassCastException:
org.apache.ojb.broker.util.collections.RemovalAwareCollection
I'm assuming this is because OJB is creating the Collection as something
that can't be cast to a DatedList. So then I changed DatedList so that
it implements IRemovalAwareCollection. But that still results with the
same error as above.
I then tried adding:
collection-class="com.lmig.pm.affinity.util.DatedList" to the
collection-descriptors for the 3 collections in the AccountTeam
class-descriptor (while defining them as DatedList's instead of Lists in
the class) and I get this error:
[5/17/05 15:58:09:361 CDT] 51d19d89 SystemErr R
org.apache.ojb.broker.OJBRuntimeException: Can't create new Collection
for owner
How do I get OJB to use my DatedList collections?
-----Original Message-----
From: Lemke, Wesley
Sent: Tuesday, May 17, 2005 2:35 PM
To: 'OJB Users List'
Subject: Using user defined Collections
We needed to extend the java.util.ArrayList class for a few of
our collections. The objects persist fine, but I am getting class cast
exceptions when I try to retrieve the objects:
java.lang.ClassCastException:
org.apache.ojb.broker.util.collections.RemovalAwareCollection
Because we are subclassing from ArrayList, I didn't think that
we would need to use the collection-class attribute of the
collection-descriptor or implement ManageableCollection. Is this true?
What do I have to do, to use a subclass of ArrayList for my
collections?
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