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https://issues.apache.org/jira/browse/JEXL-144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13811873#comment-13811873
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Woonsan Ko commented on JEXL-144:
---------------------------------
The error seems to happen because it tries to resolve the type of the first
array item in order to find the best setter method.
However, if an empty array is provided, it cannot detect the component type of
the array, and so it fails to find a proper method from the object array
(Object[]) argument.
> Empty array property setting fails
> ----------------------------------
>
> Key: JEXL-144
> URL: https://issues.apache.org/jira/browse/JEXL-144
> Project: Commons JEXL
> Issue Type: Bug
> Reporter: Woonsan Ko
> Fix For: 2.1.2, 3.0
>
>
> Suppose a bean has an array property setter method (e.g, public void
> setStrarr(String []) ).
> If I use an expression like this with an empty array, then it fails with the
> error message, "inaccessible or unknown property strarr".
> // example expression
> bean.strarr = [ ];
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