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https://jira.duraspace.org/browse/DS-1121?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mark H. Wood updated DS-1121:
-----------------------------
Fix Version/s: (was: 3.1)
3.2
> Searches interspersed with a minus (separated by spaces) will exclude the
> following term. (AND NOT)
> ---------------------------------------------------------------------------------------------------
>
> Key: DS-1121
> URL: https://jira.duraspace.org/browse/DS-1121
> Project: DSpace
> Issue Type: Bug
> Components: DSpace API
> Affects Versions: 1.8.0, 1.8.1
> Reporter: Peter Dietz
> Assignee: Peter Dietz
> Labels: has-patch
> Fix For: 3.2
>
> Attachments:
> DS-1121-hacking-DSQuery-to-strip-interspersed-dashses.patch, Screen Shot
> 2012-02-08 at 4.30.51 PM.png, Screen Shot 2012-02-08 at 4.31.03 PM.png,
> Screen Shot 2012-02-08 at 5.57.54 PM.png
>
>
> I have confirmed that this problem exists... Here's the original report.
> -- In an email to dspace-tech, Jessica Lindholm writes:
> Dear all,
> I would like some advice on Boolean operators and their implications on
> search / search results.
>
> Some publications have a minus sign in titles, e.g. in Chronic intraoral pain
> - assessment of diagnostic methods and prognosis
> http://hdl.handle.net/2043/12563.
>
> This gives us a problem when searching for the item. It coincides with '-'
> minus being the operator for AND NOT, so we all of a sudden look for stuff
> without specific words. A simple free-text search matching the title above
> leads to zero hits. And users tend to e.g. copy a title from a reference list
> to the search box.
>
> Has anyone encountered the same problem? We have looked around and haven't
> found a solution (stopwords, tokens, queries).
>
> We are using AND as standard operator for all searches, i.e. we have that
> changed in config.xml (from default OR). If we had used OR as default the
> problem wouldn't appear, and possibly this opens up for a logical slip in the
> system (or by me, which is not unlikely at all). Google uses the same
> operator, but handling it differently when surrounded by whitespaces.
>
> Is this a possible bug encountered?
>
> We would preferably like to change the Boolean operators to usage of
> capitalised AND NOT, AND etc instead of -,+. Believing this would solve the
> issue. Is this possible (Java okay)?
>
> However when matching exact, using quotation marks both the searches:
> "Chronic intraoral pain assessment of diagnostic methods and prognosis"
> (minus excluded) and "Chronic intraoral pain - assessment of diagnostic
> methods and prognosis" works fine. So the minus is treated to some extent.
>
> Looking forward to understand better,
>
> Jessica Lindholm
>
> Ps Malmo university is using DSpace (1.8.*) XMLUI as our institutional
> repository.
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