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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:
---------------------------------
    Description: 
{{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.

Pacth enclosed...

  was:
{{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.

Path enclosed...


> 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
>
> {{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.
> Pacth enclosed...



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