@Indexed(index = "HospitalIndex")
@AnalyzerDef(name = "ngram",
        tokenizer = @TokenizerDef(factory = StandardTokenizerFactory.class),
        filters = {
                @TokenFilterDef(factory = StandardFilterFactory.class),
                @TokenFilterDef(factory = LowerCaseFilterFactory.class),
                @TokenFilterDef(factory = NGramFilterFactory.class,
                        params = {
                                @Parameter(name = "minGramSize", value = "1"),
                                @Parameter(name = "maxGramSize", value = "40")})
        })
public class Hospital {

        @Field(index = Index.YES, analyze = Analyze.YES, store = Store.NO, analyzer = @Analyzer(definition = "ngram"))
        private String name = "";
}

1   name    al
1   name    e
1   name    es
1   name    est
1   name    h
1   name    ho
1   name    hos
1   name    hosp
1   name    hospi
1   name    hospit
1   name    hospita
1   name    hospital
1   name    i
1   name    it
1   name    ita
1   name    ital
1   name    l
1   name    m
1   name    my
1   name    o
1   name    os
1   name    osp
1   name    ospi
1   name    ospit
1   name    ospita
1   name    ospital
1   name    p
1   name    pi
1   name    pit
1   name    pita
1   name    pital
1   name    s
1   name    sp
1   name    spi
1   name    spit
1   name    spita
1   name    spital
1   name    st
1   name    t
1   name    ta
1   name    tal
1   name    te
1   name    tes
1   name    test
1   name    y
1   name    a

QueryBuilder hospitalQb = fullTextEntityManager.getSearchFactory().buildQueryBuilder().forEntity(Hospital.class).get();
Query hospitalQuery = hospitalQb.keyword().onFields("name")().matching(searchString).createQuery();
javax.persistence.Query persistenceQuery = fullTextEntityManager.createFullTextQuery(hospitalQuery, Hospital.class);
List<Hospital> results = persistenceQuery.getResultList();

name:h name:ho name:hos name:hosp name:hospi name:hospit name:hospita name:hospital name:o name:os name:osp name:ospi name:ospit name:ospita name:ospital name:s name:sp name:spi name:spit name:spita name:spital name:p name:pi name:pit name:pita name:pital name:i name:it name:ita name:ital name:t name:ta name:tal name:a name:al name:l