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https://issues.apache.org/jira/browse/CAUSEWAY-3878?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17940399#comment-17940399
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Andi Huber commented on CAUSEWAY-3878:
--------------------------------------
Specifically happens when an entity action results in a standalone collection,
while at the same time deleting said entity in the process.
(ApplicationUser_delete is such an action.)
> [Wicket Viewer] Cannot delete JPA Entity (as surfaces with SecMan)
> ------------------------------------------------------------------
>
> Key: CAUSEWAY-3878
> URL: https://issues.apache.org/jira/browse/CAUSEWAY-3878
> Project: Causeway
> Issue Type: Bug
> Components: Viewer Wicket
> Reporter: Andi Huber
> Assignee: Andi Huber
> Priority: Blocker
> Fix For: 3.3.0
>
>
> E.g. cannot delete User.
> {noformat}
> Caused by: java.lang.IllegalArgumentException: cannot recreate from memento
> for deleted object
> at
> org.apache.causeway.commons.internal.exceptions._Exceptions.illegalArgument(_Exceptions.java:79)
> ~[classes/:?]
> at
> org.apache.causeway.core.metamodel.tabular.internal.DataTableInternal$Memento.getDataTableModel(DataTableInternal.java:442)
> ~[classes/:?]
> at
> org.apache.causeway.core.metamodel.tabular.internal.DataTableInternal$Memento.getDataTableModel(DataTableInternal.java:1)
> ~[classes/:?]
> at
> org.apache.causeway.viewer.wicket.model.models.coll.CollectionModelAbstract.load(CollectionModelAbstract.java:73)
> ~[classes/:?]
> at
> org.apache.causeway.viewer.wicket.model.models.coll.CollectionModelAbstract.load(CollectionModelAbstract.java:1)
> ~[classes/:?]
> at
> org.apache.wicket.model.LoadableDetachableModel.getObject(LoadableDetachableModel.java:128)
> ~[wicket-core-10.4.0.jar:10.4.0]
> at
> org.apache.causeway.viewer.wicket.model.models.coll.CollectionModelAbstract.getDataTableModel(CollectionModelAbstract.java:85)
> ~[classes/:?]
> at
> org.apache.causeway.viewer.wicket.model.models.coll.CollectionModel.getName(CollectionModel.java:120)
> ~[classes/:?]
> at
> org.apache.causeway.viewer.wicket.ui.components.collection.export.CollectionContentsAsExportFactory.createComponent(CollectionContentsAsExportFactory.java:75)
> ~[classes/:?]
> at
> org.apache.causeway.viewer.wicket.ui.components.collection.selector.CollectionPresentationSelectorPanel.lambda$0(CollectionPresentationSelectorPanel.java:162)
> ~[classes/:?]
> at
> org.apache.causeway.viewer.wicket.ui.util.Wkt$20.populateItem(Wkt.java:956)
> ~[classes/:?]
> {noformat}
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