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
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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