Searching case insensitive in case sensitive indexes

Timo Tretter · **Joined:** Tue Apr 20, 2010 11:36 am **Posts:** 1

Hi,
I'm trying to implement a fulltext search for a content string in an entity. The user should differ between case sensitive and case insensitive search. So I implemented a Analyzer that do not lowercase the indexes. I annotated the content as

Code:

@Lob
@org.hibernate.search.annotations.Field(index = Index.TOKENIZED)
@Analyzer(impl = CustomAnalyzer.class)
private String content = "";

For searching I use a MultiFieldQueryParser and a lucene Query.

Code:

MultiFieldQueryParser parser = new MultiFieldQueryParser(new String[] {"content" }, new CustomAnalyzer());
org.apache.lucene.search.Query ftq;
ftq = parser.parse("content: searchString");
entities = entityManager.createFullTextQuery(ftq, Entity.class).getResultList();

A search like this is always case sensitive. But can't be case insensitive.
Is there a way to do a case insensitive search in a case sensitive index? The hint from a lucene forum to create 2 indexes one case sensitive and one insensitive is not an option.

Thanks, Timo

sanne.grinovero · **Posted:** Tue Apr 20, 2010 4:39 pm

Hi, you don't need to make two different indexes, you should index the same data in two different fields, like having

Code:

   @Fields( {
      @Field(name = "content_casesensitive", index = Index.TOKENIZED, analyzer = @Analyzer(definition="casesensitiveAnalyzer")),
      @Field(name = "content_caseInsensitive", index = Index.TOKENIZED, analyzer = @Analyzer(definition="caseInsensitiveAnalyzer"))
   } )
   public String getContent(){