Hi
The ordering of the titles is done by the class
org.dspace.sort.OrderFormatTitleMarc21.java
defined in dspace.cfg
plugin.named.org.dspace.sort.OrderFormatDelegate= \
org.dspace.sort.OrderFormatTitleMarc21=title
A new class that meets your expectations should be implemented and used
at configuration file.
Regards
Adán
Hi,
Finnish alphabet is same as English alphabet except it has three
additional letters å, ä and ö. In Finnish alphabetical order these
letters are considered as the three last letters of the alphabet so
the last six letters of Finnish alphabet are "xyzåäö". DSpace
normalizes å and ä as a and ö as o. This leads to undesired
alphabetical sort order in DSpace. How could we implement proper
Finnish alphabetical sorting in DSpace? We are currently using DSpace
7.5. In Solr, it would seem that sorting of Finnish characters does
not happen, at least in our case. This is imminent when we open any
collection, and then attempt to browse by title.
To recreate this issue, on a vanilla installation of dspace, we first
create 7 test entries inside of a collection with the following
titles. When browsed by title in an ascending form, the items are
returned in the following order:
* AABNER Forum Peer Review System
* Aadam askeetti : Ihminen paratiisissa Johannes Damaskolaisen mukaan
* AAI-profiler : fast proteome-wide exploratory analysis reveals
taxonomic identity, misclassification and contamination
* Äänen korkeuteen ja puhekieleen liittyvät taidot: teoriasta
kuulovammaisten lasten kuntoutukseen
* Ääniä opinto- ja uraohjauksen kansallisella kentällä – ohjauksen
kehittämistä koskevien argumenttien analyysi
* Aarne Michaël Tallgren, Estonia, and Tartu in 1920 : The image of
a country in correspondence
* The Aarhus Chamber Campaign on Highly Oxygenated Organic Molecules
and Aerosols (ACCHA) : particle formation, organic acids, and
dimer esters from alpha-pinene ozonolysis at different temperatures
However, the correct order should be :
* AABNER Forum Peer Review System
* AAI-profiler : fast proteome-wide exploratory analysis reveals
taxonomic identity, misclassification and contamination
* Aadam askeetti : Ihminen paratiisissa Johannes Damaskolaisen mukaan
* Aarne Michaël Tallgren, Estonia, and Tartu in 1920 : The image of
a country in correspondence
* The Aarhus Chamber Campaign on Highly Oxygenated Organic Molecules
and Aerosols (ACCHA) : particle formation, organic acids, and
dimer esters from alpha-pinene ozonolysis at different temperatures
* Äänen korkeuteen ja puhekieleen liittyvät taidot: teoriasta
kuulovammaisten lasten kuntoutukseen
* Ääniä opinto- ja uraohjauksen kansallisella kentällä – ohjauksen
kehittämistä koskevien argumenttien analyysi
To try and mitigate this issue, we tried to change the schema.xml of
the search core by explicitly creating a new fieldtype and specifying
ICU Collation libraries:
<fieldType name="titleSortType" class="solr.TextField"
sortMissingLast="false" omitNorms="false">
<analyzer>
<tokenizer class="solr.KeywordTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
<!-- Use ICU Collation for Finnish sorting -->
<analyzer type="index"
class="org.apache.lucene.collation.ICUCollationKeyAnalyzer">
<param name="locale" value="fi" />
</analyzer>
<filter class="solr.TrimFilterFactory" />
</analyzer>
</fieldType>
And then specifying this to *_sort filed under fieldtype as:
<dynamicField name="*_sort" type="titleSortType" indexed="true"
stored="true" multiValued="false" omitNorms="true"/>
but this did not help.
Thanks and Regards,
Barunes
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