Hibernate Lucene search returns no result.

[sam White]

HI, with JPA persistence, and hibernate 3.5 for Lucene, I created a search function in the ejb project. But when running this search function with a single word search, it returns no result.
Here is my search function in the ejb project:

@Override
    public List<MyisamProductArticle> search(final String queryString) {
        FullTextEntityManager ftem = org.hibernate.search.jpa.Search.getFullTextEntityManager(em);

        // build up a Lucene query
        QueryBuilder qb = ftem.getSearchFactory().buildQueryBuilder().forEntity(MyisamProductArticle.class).get();

        org.apache.lucene.search.Query luceneQuery = qb.keyword().onFields("header", "aDesc").matching("*"+queryString.toLowerCase()+"*").createQuery();

        // wrap the Lucene query in a JPA query
        FullTextQuery jpaWrappedQuery = ftem.createFullTextQuery(luceneQuery, MyisamProductArticle.class);

        return jpaWrappedQuery.getResultList();

entity bean class:

@Entity
@Table(name = "myisam_product_article", catalog = "forestsurf", schema = "")
@XmlRootElement
@NamedQueries({
    @NamedQuery(name = "MyisamProductArticle.findAll", query = "SELECT m FROM MyisamProductArticle m"),
    @NamedQuery(name = "MyisamProductArticle.findByArticleId", query = "SELECT m FROM MyisamProductArticle m WHERE m.articleId = :articleId"),
    @NamedQuery(name = "MyisamProductArticle.findByProductId", query = "SELECT m FROM MyisamProductArticle m WHERE m.productId = :productId"),
    @NamedQuery(name = "MyisamProductArticle.findByHeader", query = "SELECT m FROM MyisamProductArticle m WHERE m.header = :header")})

//This annotation tells hibernate search that this class has to be indexed
@Indexed
//@Analyzer(impl = org.apache.lucene.analysis.standard.StandardAnalyzer.class)
@AnalyzerDef(name = "customanalyzer", tokenizer = @TokenizerDef(factory = StandardTokenizerFactory.class),
        filters = {@TokenFilterDef(factory = LowerCaseFilterFactory.class),
                    @TokenFilterDef(factory = SnowballPorterFilterFactory.class, params = {
                        @Parameter(name = "language", value = "English")
                    })
    })
public class MyisamProductArticle implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @Basic(optional = false)
    @DocumentId
    @NotNull
    @Column(name = "article_id")
    private Integer articleId;
    @Basic(optional = false)
    @NotNull
    @Column(name = "product_id")
    private int productId;
    @Lob
    @Size(max = 65535)
    @Column(name = "a_desc")
    // This annotation tells that this field has to be indexed and also analyzed (break the long sentence and ignore common words), store tells if this field
    // will be part of Index, by Store.Yes it means it will be part of Index, so that query will be faster, downside is that size of Index increases
    @Field(index = Index.YES, analyze = Analyze.YES, store = Store.YES)
    private String aDesc;
    @Size(max = 64)
    @Column(name = "header")
    // This annotation tells that this field has to be indexed and also analyzed (break the long sentence and ignore common words), store tells if this field
    // will be part of Index, by Store.Yes it means it will be part of Index, so that query will be faster, downside is that size of Index increases
    @Field(index = Index.YES, analyze = Analyze.YES, store = Store.YES)
    private String header;
    
//    @Boost(2.0f)
//   private Date lastUpdated;
    

    public MyisamProductArticle() {
    }

    public MyisamProductArticle(Integer articleId) {
        this.articleId = articleId;
    }

    public MyisamProductArticle(Integer articleId, int productId) {
        this.articleId = articleId;
        this.productId = productId;
    }

    public Integer getArticleId() {
        return articleId;
    }

    public void setArticleId(Integer articleId) {
        this.articleId = articleId;
    }

    public int getProductId() {
        return productId;
    }

    public void setProductId(int productId) {
        this.productId = productId;
    }

    public String getADesc() {
        return aDesc;
    }

    public void setADesc(String aDesc) {
        this.aDesc = aDesc;
    }

    public String getHeader() {
        return header;
    }

    public void setHeader(String header) {
        this.header = header;
    }

Any suggestion for resolve this issue is very much appreciated.
Thanks
Sam