java - Why is using MappingCharFilter in Lucene 4,1 analyzer breaking wildcard matches -


using mappingcharfilter in analyzer breaking wildcard matches

i created simple stripspacesandseparatorsanalyzer 

public class stripspacesandseparatorsanalyzer extends analyzer {      protected normalizecharmap charconvertmap;      protected void setcharconvertmap() {          normalizecharmap.builder builder = new normalizecharmap.builder();         builder.add(" ","");         builder.add("-","");         builder.add("_","");         builder.add(":","");         charconvertmap = builder.build();     }      public stripspacesandseparatorsanalyzer() {         setcharconvertmap();     }      @override     protected tokenstreamcomponents createcomponents(string fieldname,                                                       reader reader) {         tokenizer source = new keywordtokenizer(reader);         tokenstream filter = new lowercasefilter(source);         return new tokenstreamcomponents(source, filter);     }       @override     protected reader initreader(string fieldname,                                 reader reader)     {         return new mappingcharfilter(charconvertmap, reader);     } }

so ignores characters such hyphens in field can search for

catno:wrathcd25 catno:wrathcd-25

and same results, , works (the original value of field added index wrathcd-25)

however there problem wildcard searching

catno:wrathcd25*

works, but

catno:wrathcd-25*

does not

if amend analyzer comment out initreader() method then

catno:wrathcd-25*

now works of course

catno:wrathcd25

no longer works.

wham doing wrong please

let me guess: parse query, using regular queryparser, right?

try using analyzingqueryparser, should trick. javadoc:

overrides lucene's default queryparser fuzzy-, prefix-, range-, , wildcardquerys passed through given analyzer, wild card characters (like *) don't removed search terms.


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