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https://issues.apache.org/jira/browse/ISIS-2430?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17197388#comment-17197388
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Andi Huber commented on ISIS-2430:
----------------------------------
The action parameter metamodel have their ObjectSpecification discovered during
bootstrapping via reflective type introspection. But actual types used at
runtime might be sub-classes of the the above, so the ObjectSpecification for
parameter models must be loaded on the fly.
> SecMan Menu Action (create user) causes Exception
> -------------------------------------------------
>
> Key: ISIS-2430
> URL: https://issues.apache.org/jira/browse/ISIS-2430
> Project: Isis
> Issue Type: Bug
> Components: Isis Core
> Reporter: Andi Huber
> Assignee: Andi Huber
> Priority: Major
> Fix For: 2.0.0-M4
>
>
> java.lang.IllegalArgumentException: Don't know how to create an ObjectMemento
> for a type with ObjectSpecification
> ObjectSpecificationDefault@53129328[class=org.apache.isis.extensions.secman.api.role.ApplicationRole,type=UNKNOWN,superclass=Object].
> All other strategies failed. Type is neither identifiable (isManagedBean()
> || isViewModel() || isEntity()), nor is a 'parented' Collection, nor has
> 'encodable' semantics, nor is (Serializable || Externalizable)
> at
> org.apache.isis.core.commons.internal.exceptions._Exceptions.illegalArgument(_Exceptions.java:80)
>
> ~[isis-core-commons-2.0.0-M2.20200912-0501-842cc88f.jar:2.0.0-M2.20200912-0501-842cc88f]
> at
> org.apache.isis.viewer.wicket.viewer.services.mementos.ObjectMementoWkt.init(ObjectMementoWkt.java:471)
>
> ~[isis-viewer-wicket-viewer-2.0.0-M2.20200912-0501-842cc88f.jar:2.0.0-M2.20200912-0501-842cc88f]
> at
> org.apache.isis.viewer.wicket.viewer.services.mementos.ObjectMementoWkt.<init>(ObjectMementoWkt.java:429)
>
> ~[isis-viewer-wicket-viewer-2.0.0-M2.20200912-0501-842cc88f.jar:2.0.0-M2.20200912-0501-842cc88f]
> at
> org.apache.isis.viewer.wicket.viewer.services.mementos.ObjectMementoWkt.createOrNull(ObjectMementoWkt.java:66)
>
> ~[isis-viewer-wicket-viewer-2.0.0-M2.20200912-0501-842cc88f.jar:2.0.0-M2.20200912-0501-842cc88f]
> at
> org.apache.isis.viewer.wicket.viewer.services.mementos.ObjectMementoServiceWicket.mementoForObject(ObjectMementoServiceWicket.java:81)
>
> ~[isis-viewer-wicket-viewer-2.0.0-M2.20200912-0501-842cc88f.jar:2.0.0-M2.20200912-0501-842cc88f]
> at
> org.apache.isis.viewer.wicket.model.models.ManagedObjectModel.setObject(ManagedObjectModel.java:90)
>
> ~[isis-viewer-wicket-model-2.0.0-M2.20200912-0501-842cc88f.jar:2.0.0-M2.20200912-0501-842cc88f]
> at
> org.apache.isis.viewer.wicket.model.models.ScalarParameterModel.setValue(ScalarParameterModel.java:150)
>
> ~[isis-viewer-wicket-model-2.0.0-M2.20200912-0501-842cc88f.jar:2.0.0-M2.20200912-0501-842cc88f]
> at
> org.apache.isis.viewer.wicket.model.models.ActionArgumentCache.lambda$resetTo$1(ActionArgumentCache.java:86)
>
> ~[isis-viewer-wicket-model-2.0.0-M2.20200912-0501-842cc88f.jar:2.0.0-M2.20200912-0501-842cc88f]
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