Hello Ben,
Thank you for the URLs. They gave me a head start and I managed to solve
this!
I am posting this in case someone else needs to try it:
- added two filters for the Greek language (mentioned in the following
apache wiki page: http://wiki.apache.org/solr/LanguageAnalysis#Greek),
- rebuilt,
- re-indexed and it worked.
Thanks again for your advice Ben and helix!
Regards,
Kiriaki
EL/i/DOC Systems & Services
On 20/5/2013 6:03 μμ, Benjamin Ryan wrote:
Kiriaki,
Be aware the analyzers/filters for anything other than very simple
cases usually come in pairs, one for indexing and one for searching.
It is important to understand that if a field is analyzed/filtered in
one way (lowercase filter is a simple case) for indexing this will
have an impact on how your search performs as it (may) go through
analysis/filtering before it gets to the part where terms are matched.
A good place to check what is going on is the SOLR admin interface
(http://127.0.0.1:8080/solr/search/admin/schema.jsp for a browser that
gives you info on all your fields and how they are analyzed and filtered.
Also the http://127.0.0.1:8080/solr/search/admin/analysis.jsp page is
good for checking what is happening to an input as it goes through
analysis/filtering for both the index and search chains.
As an example select the field name “text” with a field value of
“wi-fi” for indexing and “wi-fi” for searching, when you hit the
analyze button you will see the results of the two chains. In this
case the index chain has the terms wi,fi and wifi and the search chain
has the terms wi and fi. This in combination with other filters (i.e.
stemming) will determine what terms are available for searching and
what the results will be for a given search.
For your case I would assume that if it you want a simple query over a
text field the index and analysis chain should produce the same
results for a given input, but this will be dependent on the exact
query that is issued to SOLR and the parameters that are passed (this
is one area I need to look at in Dspace).
One word of caution – this is a very big topic J
Regards,
Ben
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*From:*Kiriaki Roditi [mailto:krod...@elidoc.gr]
*Sent:* 20 May 2013 14:58
*To:* dspace-tech@lists.sourceforge.net
*Subject:* [Dspace-tech] Help with configuring SOLR to use a specific
search analyzer
Hello DSpace community,
I am trying to set SOLR to use the Greek analyzer for searches
performed in Mirage, DSpace version 3.1.
Setting the analyzer property in dspace.cfg to search.analyzer =
org.apache.lucene.analysis.el.GreekAnalyzerseems to be working only
for jspui' s search aspect,
so after a bit of searching and reading apache wikis, I performed the
following actions:
- uncommented the following in
[dspace-src]/dspace/solr/search/conf/schema.xml
<fieldType name="text_greek" class="solr.TextField">
<analyzer class="org.apache.lucene.analysis.el.GreekAnalyzer"/>
</fieldType>
- rebuilt dspace
- stopped tomcat
- cleared tomcat's cache
- recreated indexes several times running: index-init,
update-discovery-indexand index-init, update-discovery-index -b
but it does not seem to work. Am I missing something? Any suggestions
would be more than welcome!
Regards,
Kiriaki Roditi
EL/i/DOC Systems & Services
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