Thanks very much. The explanation is helpful and reminds me to be more
precise in describing elements of the interface with which I'm working. --CK
On Thu, Jan 24, 2013 at 2:32 PM, helix84 <[email protected]> wrote:
> OK, I think now I understand. The source of my confusion was that you
> said "Discovery sidebar", which I thought meant "Discovery sidebar
> facets", when you really just meant the sidebar browse indexes. Of
> course, I shouldn't expect you to recognize the difference just yet.
>
> To explain, you must understand that DSpace originally used only
> Lucene, not Solr (Discovery is built on top of Solr). It has been
> using Lucene for browse & search indexes. Browse by Issue Date,
> Author, Titles - these are browse indexes. You could find them in the
> advanced search form, too. Browse and search indexes can be configured
> via dspace.cfg and that is what you did. The index-init and
> index-update command line launcher commands are used to maintain them.
>
> Discovery uses Solr indexes. When you turn on Discovery, Solr is used
> for search and facets. Facets are what you see in the sidebar on the
> bottom under the Discovery label. The update-discovery-index is the
> command-line command.
>
> To make things more complicated, XMLUI with Discovery enabled still
> uses Lucene Browse indexes, but not Lucene Search indexes
> (instructions to enable Discovery tell you to disable the
> SearchArtifacts aspect). So both Lucene and Solr is used. Discovery
> also replaces the old old simple and advanced search form with its own
> /discover form that uses the Solr index completely. So browse indexes
> are only used for browsing (in the sidebar).
>
> In the JSPUI case, I believe turning on Discovery (introduced in 3.0)
> replaces Lucene completely.
>
> Sorry for the complicated explanation, but this is how the software
> has been developing. The next step will be to make Discovery default
> and deprecate Lucene.
>
> So, back to your question what discovery.xml is for. This is where you
> can configure sidebar facets and search filters. Sidebar facets are
> facets for index fields that you can see e.g. on the homepage. You can
> see search filters in the search form - where you drill down by
> Author, Title etc.
>
> I hope that clears it up a bit.
>
>
> Regards,
> ~~helix84
>
> Compulsory reading: DSpace Mailing List Etiquette
> https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette
>
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