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https://issues.apache.org/jira/browse/LUCENE-7926?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matt Whipple updated LUCENE-7926:
---------------------------------
Comment: was deleted
(was: This can lead to issues when attempting to modify the tree with such a
decorator in a node's ancestry. I'll have to circle back to figure out the all
of the relevant tentacles later.)
> Unsafe type cast in flexible parser QueryNodeImpl
> -------------------------------------------------
>
> Key: LUCENE-7926
> URL: https://issues.apache.org/jira/browse/LUCENE-7926
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Matt Whipple
> Priority: Trivial
> Attachments: LUCENE-7926.patch
>
>
> {{org.apache.lucene.queryparser.flexible.core.nodes.QueryNodeImplL67}} casts
> the argument to {{QueryNodeImpl}} although the rest of the code is written
> against the {{QueryNode}} interface. This blows up in cases where a
> non-inheriting implementation is passed (such as using a wrapper/decorator
> class).
> The relevant {{setParent}} method does not exist on the interface, so the
> most backwards compatible short term fix would be to wrap the cast in a
> conditional to ensure it is safe (more significant changes to the hierarchy
> may make sense but this seems like a fairly stable module).
> Patch enclosed...
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