Allthough making use of AnalyzingInfixSuggester I still getting "either or".
When lowercase-filter is active I always get suggestions, BUT they are
lowercased (i.e. "chamäleon").
When lowercase-filter is not active I only get suggestions when querying "Chamä"
my solrconfig.xml
...
<requestHandler class="org.apache.solr.handler.component.SearchHandler"
name="/suggest">
<lst name="defaults">
<str name="echoParams">none</str>
<str name="wt">json</str>
<str name="indent">false</str>
<str name="spellcheck">true</str>
<str name="spellcheck.dictionary">suggestDictionary</str>
<str name="spellcheck.onlyMorePopular">true</str>
<str name="spellcheck.count">5</str>
<str name="spellcheck.collate">false</str>
</lst>
<arr name="components">
<str>suggest</str>
</arr>
</requestHandler>
...
<searchComponent class="solr.SpellCheckComponent" name="suggest">
<lst name="spellchecker">
<str name="name">suggestDictionary</str>
<str name="classname">org.apache.solr.spelling.suggest.Suggester</str>
<str
name="lookupImpl">org.apache.solr.spelling.suggest.fst.AnalyzingInfixLookupFactory</str>
<str
name="dictionaryImpl">org.apache.solr.spelling.suggest.DocumentDictionaryFactory</str>
<str name="field">suggest</str>
<str name="buildOnCommit">true</str>
<str name="storeDir">suggester</str>
<str name="suggestAnalyzerFieldType">text_suggest</str>
<str name="minPrefixChars">4</str>
</lst>
</searchComponent>
...
my schema.xml
...
<field indexed="true" multiValued="true" name="suggest" stored="false"
type="text_suggest"/>
...
<fieldType class="solr.TextField" name="text_suggest"
positionIncrementGap="100">
<analyzer type="index">
<tokenizer class="solr.UAX29URLEmailTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords.txt"/>
<!-- <filter class="solr.LowerCaseFilterFactory"/> -->
</analyzer>
<analyzer type="query">
<tokenizer class="solr.UAX29URLEmailTokenizerFactory"/>
<filter class="solr.StopFilterFactory" ignoreCase="true"
words="stopwords.txt"/>
<!-- <filter class="solr.LowerCaseFilterFactory"/> -->
</analyzer>
</fieldType>
...
-----Ursprüngliche Nachricht-----
Von: Michael Sokolov [mailto:msoko...@safaribooksonline.com]
Gesendet: Donnerstag, 4. Dezember 2014 14:05
An: solr-user@lucene.apache.org
Betreff: Re: Keeping capitalization in suggestions?
Have a look at AnalyzingInfixSuggester - it does what you want.
-Mike
On 12/4/14 3:05 AM, Clemens Wyss DEV wrote:
> When I index a text such as "Chamäleon" and look for suggestions for "chamä"
> and/or "Chamä", I'd expect to get "Chamäleon" (uppercased).
> But what happens is
>
> If lowecasefilter (see below (1)) set
> "chamä" returns "chamäleon"
> "Chamä" does not match
>
> If lowecasefilter (1) not set
> "Chamä" returns "Chamäleon"
> "chamä" does not match
>
> I guess lowecasefilter should not be set/active, but then how do I get
> matches even if the search term is lowercased?
>
> Context:
> schema.xml
> ...
> <fieldType class="solr.TextField" name="text_de"
> positionIncrementGap="100">
> <analyzer type="index">
> <tokenizer class="solr.StandardTokenizerFactory"/>
> <filter class="solr.LowerCaseFilterFactory"/>
> <filter class="solr.StopFilterFactory" ignoreCase="true"
> words="lang/stopwords_de.txt"/>
> <filter class="solr.GermanLightStemFilterFactory"/>
> </analyzer>
> <analyzer type="query">
> <tokenizer class="solr.StandardTokenizerFactory"/>
> <filter class="solr.SynonymFilterFactory" expand="true"
> ignoreCase="true" synonyms="synonyms.txt"/>
> <filter class="solr.LowerCaseFilterFactory"/>
> <filter class="solr.StopFilterFactory" ignoreCase="true"
> words="lang/stopwords_de.txt"/>
> <filter class="solr.GermanLightStemFilterFactory"/>
> </analyzer>
> </fieldType>
> ...
> <fieldType class="solr.TextField" name="text_suggest"
> positionIncrementGap="100">
> <analyzer>
> <tokenizer class="solr.UAX29URLEmailTokenizerFactory"/>
> <filter class="solr.StopFilterFactory" ignoreCase="true"
> words="stopwords.txt"/>
> <filter class="solr.LowerCaseFilterFactory"/> <!-- (1) -->
> </analyzer>
> </fieldType>
>
> solrconfig.xml
> -----------------
> ...
> <requestHandler class="org.apache.solr.handler.component.SearchHandler"
> name="/suggest">
> <lst name="defaults">
> <str name="echoParams">none</str>
> <str name="wt">json</str>
> <str name="indent">false</str>
> <str name="spellcheck">true</str>
> <str name="spellcheck.dictionary">suggestDictionary</str>
> <str name="spellcheck.onlyMorePopular">true</str>
> <str name="spellcheck.count">5</str>
> <str name="spellcheck.collate">false</str>
> </lst>
> <arr name="components">
> <str>suggest</str>
> </arr>
> </requestHandler>
> ...
> <searchComponent class="solr.SpellCheckComponent" name="suggest">
> <lst name="spellchecker">
> <str name="name">suggestDictionary</str>
> <str
> name="classname">org.apache.solr.spelling.suggest.Suggester</str>
> <str
> name="lookupImpl">org.apache.solr.spelling.suggest.fst.FSTLookupFactory</str>
> <str name="field">suggest</str>
> <float name="threshold">0.</float>
> <str name="buildOnCommit">true</str>
> </lst>
> </searchComponent>
> ...
>
