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From "J. Taylor Mayfield (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LANG-863) Method returns number of inheritance hops between parent and subclass
Date Sat, 02 Nov 2013 02:39:17 GMT

     [ https://issues.apache.org/jira/browse/LANG-863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

J. Taylor Mayfield updated LANG-863:
------------------------------------

    Attachment: LANG-863.patch

I've updated the attached patch with the "minor nits" and included the suggested improvements.
The distance method now returns -1 if the classes are invalid (null) or disjointed and 0 only
if they are equivalent. Are there any other improvements you would suggest related to this
method?

> Method returns number of inheritance hops between parent and subclass
> ---------------------------------------------------------------------
>
>                 Key: LANG-863
>                 URL: https://issues.apache.org/jira/browse/LANG-863
>             Project: Commons Lang
>          Issue Type: New Feature
>          Components: lang.reflect.*
>            Reporter: Daneel S. Yaitskov
>             Fix For: Patch Needed
>
>         Attachments: LANG-863.patch, LANG-863.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> For example.
> class A {
> }
> class B extends A {
> }
> class C extends B {
> }
> int d;
> d = InheritanceUtils.distance(A.class, A.class);
> Assert.assertEquals(0, d);
> d = InheritanceUtils.distance(B.class, A.class);
> Assert.assertEquals(1, d);
> d = InheritanceUtils.distance(C.class, A.class);
> Assert.assertEquals(2, d);



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