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https://issues.apache.org/jira/browse/LUCENENET-284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12780143#action_12780143
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Andrei Iliev commented on LUCENENET-284:
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Nikolas, thanks for you code.
But I don't think that this class should implement IComparable interface. I
can imagine a class that is required only to be IEquatableable.
I don't know if is right time to do much refactoring of the code. I think when
we'll move to Lucene 3.0 (which will heavily use generics) we can return to
this problem.
> java vs .Net GetHashCode and Equals for ArrayList
> --------------------------------------------------
>
> Key: LUCENENET-284
> URL: https://issues.apache.org/jira/browse/LUCENENET-284
> Project: Lucene.Net
> Issue Type: Bug
> Reporter: Andrei Iliev
> Attachments: ArrayList.patch, ComparableListOfT.patch
>
>
> 1)In java the hash code of a list (and ArrayList) is defined to be the result
> of the following calc:
> <code>
> hashCode = 1;
> Iterator i = list.iterator();
> while (i.hasNext()) {
> Object obj = i.next();
> hashCode = 31*hashCode + (obj==null ? 0 : obj.hashCode());
> }
> </code>
> In .Net it hash code of object itself.
>
> 2) In java two lists are defined to be equal if they contain the same
> elements in the same order.
> In .Net it compares the object references.
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