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https://issues.apache.org/jira/browse/MATH-284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12804623#action_12804623
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Luc Maisonobe commented on MATH-284:
------------------------------------
This issue will have to wait at least for 3.0 as it introduces an incompatible
change in a user interface.
> Avoid ArrayStoreException
> -------------------------
>
> Key: MATH-284
> URL: https://issues.apache.org/jira/browse/MATH-284
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 2.0
> Reporter: Klaus Hartlage
> Priority: Minor
> Attachments: math-284.patch
>
>
> Add a new method
> org.apache.commons.math,Field#getRuntimeClass():
> ...
> /**
> * Returns the runtime class of the FieldElement.
> *
> * @return The {...@code Class} object that represents the runtime
> * class of this object.
> */
> Class<? extends FieldElement> getRuntimeClass();
> ...
> and replace all occurrences of
> Array.newInstance(field.getZero().getClass(),....)
> with
> Array.newInstance(field.getRuntimeClass(),....)
> to avoid the throwing of ArrayStoreException in the case you have a type
> hierachy of Fields with a common interface
> and the array should have the interface type at runtime.
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