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https://issues.apache.org/jira/browse/MATH-506?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phil Steitz resolved MATH-506.
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Resolution: Fixed
I removed the field (hence eliminating pluggability) in r1159916. As of 3.0,
the distribution classes are immutable, so to support pluggability a factory or
class name rather than a distribution instance would have to be provided.
There is only one implementation provided by [math], so I do not see this as
worth the effort and complexity to retain.
> The static field ChiSquareTestImpl.distribution serves no purpose
> -----------------------------------------------------------------
>
> Key: MATH-506
> URL: https://issues.apache.org/jira/browse/MATH-506
> Project: Commons Math
> Issue Type: Bug
> Affects Versions: 1.2, 2.0, 2.1, 2.2
> Reporter: Sebb
> Assignee: Phil Steitz
> Priority: Minor
> Fix For: 3.0
>
>
> The static field ChiSquareTestImpl.distribution serves no purpose.
> There is a setter for it, but in every case where the field is used, it is
> first overwritten with a new value.
> The field and the setter should be removed, and the methods that create a new
> instance should create a local variable instead.
> For Math 2.1, the field can be removed and the setter deprecated.
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