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https://issues.apache.org/jira/browse/CAUSEWAY-3543?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel Keir Haywood resolved CAUSEWAY-3543.
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Resolution: Fixed
> AuthenticatedWebSessionForCauseway lookup MetaModelContext rather than
> injected.
> --------------------------------------------------------------------------------
>
> Key: CAUSEWAY-3543
> URL: https://issues.apache.org/jira/browse/CAUSEWAY-3543
> Project: Causeway
> Issue Type: Improvement
> Components: Viewer Wicket
> Affects Versions: 2.0.0-RC2
> Reporter: Daniel Keir Haywood
> Assignee: Daniel Keir Haywood
> Priority: Minor
> Fix For: 2.0.0-RC3
>
>
> Currently we inject the "MetaModelContext" object (from which the regular
> InteractionService is retrieved) into the AuthenticatedWebSessionForCauseway
> override, via an init method.
> However, this field is marked as transient, so under certain circumstances it
> seems as though this field may become null, resulting in NPEs/500 errors
> thereafter.
> A more robust design would simply be to lookup the MetaModel from the
> CausewayWicketApplication, which is available always through a static
> singleton method CausewayWicketApplication.get().
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