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https://issues.apache.org/jira/browse/JCR-322?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12471625
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Stefan Guggisberg commented on JCR-322:
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> Anton Slutsky commented on JCR-322:
> -----------------------------------
>
> Like I said, extending SessionImpl in the nodetype package is an option. The
> issue here is not my inability to extend a class and copy code from the
> org/apache/jackrabbit/core/SystemSession.java file. Its the silliness of
> such an approach. Basically, what will happen is, we'll be duplicating the
> SystemSession code just for the sake of duplicating it. I dont believe this
> is a good thing at all.
i absolutely agree with anton. publicly exposing the system session on the
other hand would be an unacceptable security risk.
currently there's *one* internal system session per workspace. sharing this
system session might cause other potential issues like e.g. concurrency (since
java.jcr.Session is per definition not threadsafe).
we have to come up with some way of strictly-internally-only exposing a System
Session factory. this would btw also require to rewrite some of the workspace
housekeeping code (idle workspaces, i.e. those with no logged in sessions, are
automatically shutdown) since it would be more difficult to determine whether
a workspace is idle or not.
> Support node type modification and removal
> ------------------------------------------
>
> Key: JCR-322
> URL: https://issues.apache.org/jira/browse/JCR-322
> Project: Jackrabbit
> Issue Type: New Feature
> Components: nodetype
> Affects Versions: 0.9, 1.0
> Reporter: Jukka Zitting
> Attachments: nodetyperegistry.patch, OKMSystemSession.java
>
>
> There is currently no way to modify or remove registered node types. The
> existing reregister and unregister methods in NodeTypeRegistry throw "not
> yet implemented" exceptions for anything else than trivial node type changes.
> JSR 283 is working on an node type management API that we should ultimately
> implement.
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