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https://jira.duraspace.org/browse/DS-954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=24354#comment-24354
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Mark H. Wood commented on DS-954:
---------------------------------
It appears that I don't understand how to reproduce this condition. I created
a fresh DSpace 1.7.2 instance and loaded 40 items. There are 15 pairs of items
authored alternately by "MacDonald [0-14]" and "Macdonald [0-14]", and 10 items
authored by "Abel [0-9]". I browse all items by author, and I see ten Abel N
and ten Mac[Dd]onald N. I select Starts With M and the list shifts down by 10
with Macdonald 0 at the top. I select Next Page and it shows me the last 10
Mac[Dd]onald N, exactly those I would expect. The count remains 40. Is there
something else I need to do, to set up the proper environment to exercise the
bug?
> Browse Pagination
> -----------------
>
> Key: DS-954
> URL: https://jira.duraspace.org/browse/DS-954
> Project: DSpace
> Issue Type: Bug
> Components: DSpace API
> Affects Versions: 1.7.2
> Reporter: Dan Ishimitsu
> Assignee: Mark H. Wood
>
> The problem occurs when using Author or Subject browsing. Clicking on a
> linked "Starts With" letter at the top acts as expected. But then clicking on
> Next Page (or Previous Page) afterwards will sometimes return a different
> result than expect (ie the offset is wrong). You'll notice that the "total" #
> of authors/subjects changes if the problem exists.
> I think this is caused because the "Starts With" locates its position in the
> list based on distinct sort_values. But clicking on the Next/Prev passes that
> position +/- offset, but uses a non-distinct list of sort_values. Ex.
> MacDonald, John and Macdonald, John will both result in sort_value =
> macdonald, john. So the distinct list counts it as 1, the non-distinct list
> counts it as 2, and the offset is off by 1 when going to the next/prev page.
> At the time of this writing, the problem exists on
> http://demo.dspace.org/xmlui if browsing by Author using starts with "C".
> Changing BrowseEngine.java as follows fixes this issue, but may cause others.
> 412c412
> < dao.setDistinct(true);
> ---
> > dao.setDistinct(false); //Removed distinct
> 441c441
> < int total = getTotalResults(true);
> ---
> > int total = getTotalResults(false); //Removed distinct
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