WordDelimiterFilterFactory splits up hyphenated terms although splitOnNumerics, generateWordParts and generateNumberParts are set to 0 (false)

[Malte Hübner]

I am using Solr 4.7 and have got a serious problem with
WordDelimiterFilterFactory.

WordDelimiterFilterFactory behaves different on hyphenated terms if they
contain charaters (a-Z) or characters AND numbers.



Splitting up hyphenated terms is deactivated in my configuration:



*This is the fieldType setup from my schema:*



{code}

                               <fieldType name="text"
class="solr.TextField" positionIncrementGap="100">

                                               <analyzer type="index">

                                                               <tokenizer
class="solr.WhitespaceTokenizerFactory" />

                                                               <filter
class="solr.StopFilterFactory" ignoreCase="true"
words="lang/stopwords_de.txt" enablePositionIncrements="true" />

                                                               <filter
class="solr.WordDelimiterFilterFactory" stemEnglishPossessive="0"
generateWordParts="0" generateNumberParts="0" catenateWords="1"
catenateNumbers="1" catenateAll="0" splitOnCaseChange="0"
splitOnNumerics="0" preserveOriginal="1"/>

                                                               <filter
class="solr.LowerCaseFilterFactory" />

                                               </analyzer>

                                               <analyzer type="query">

                                                               <tokenizer
class="solr.WhitespaceTokenizerFactory" />

                                                               <filter
class="solr.SynonymFilterFactory" synonyms="lang/synonyms_de.txt"
ignoreCase="true" expand="true" />

                                                               <filter
class="solr.StopFilterFactory" ignoreCase="true"
words="lang/stopwords_de.txt" enablePositionIncrements="true" />

                                                               <filter
class="solr.WordDelimiterFilterFactory" generateWordParts="0"
generateNumberParts="0" catenateWords="1" catenateNumbers="0"
catenateAll="0" splitOnCaseChange="0" splitOnNumerics="0"
preserveOriginal="1"/>

                                                               <filter
class="solr.LowerCaseFilterFactory" />

                                               </analyzer>

                               </fieldType>

{code}



The given search term is: *X-002-99-495*



WordDelimiterFilterFactory indexes the following word parts:



* X-002-99-495

* X (shouldn't be there)

* 00299495 (shouldn't be there)

* X00299495



But the 'X' should not be indexed or queried as a single term. You can see
that splitting is completely deactivated in the schema.



I can move the charater part around in the search term:



Searching for *002-abc-99-495* gives me



* 002-abc-99-495

* 002 (shouldn't be there)

* abc (shouldn't be there)

* 99495 (shouldn't be there)

* 002abc99495



Searching for Searching for *002-99-495* (no character) gives me

* 002-99-495

* 00299495

This result is what I would expect.



Any ideas?