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From "Matt Whipple (JIRA)" <>
Subject [jira] [Issue Comment Deleted] (LUCENE-7926) Unsafe type cast in flexible parser QueryNodeImpl
Date Thu, 10 Aug 2017 19:32:00 GMT


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

> Unsafe type cast in flexible parser QueryNodeImpl
> -------------------------------------------------
>                 Key: LUCENE-7926
>                 URL:
>             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
> 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
> Patch enclosed...

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