Adding Enum Search Filter returns 0 results

kevmo · **Joined:** Wed Jun 15, 2011 2:53 pm **Posts:** 2

I'm using hibernate search 3.4, and I'm running in to a small problem. I have a filter I'm attempting to use (CourseStatusFilterFactory), but every time I enable it, no results are returned. I have another filter that works without issues (DeletedFilterFactory), so I'm not sure what the problem is.

Here is the object I am trying to search:

Code:

@Entity
@Cache(usage = CacheConcurrencyStrategy.READ_WRITE)
@Indexed
@FullTextFilterDefs({
    @FullTextFilterDef(name = "statusFilter", impl = CourseStatusFilterFactory.class, cache = FilterCacheModeType.NONE),
    @FullTextFilterDef(name = "deletedCourse", impl = DeletedFilterFactory.class, cache = FilterCacheModeType.NONE)})
public class Course extends LightEntity implements Serializable {

    private static final long serialVersionUID = 21L;
    @Id
    @DocumentId
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    @Field(name = "title", index = Index.TOKENIZED, store = Store.YES)
    private String title;
    @Field(index = Index.TOKENIZED)
    @FieldBridge(impl=EnumBridge.class)
    @Enumerated(EnumType.STRING)
    private CourseStatus status;}

The enum:

Code:

public enum CourseStatus {
    DRAFT, PUBLISHED, INACTIVE;
}

Any my FilterFactory:

Code:

public class CourseStatusFilterFactory {

private CourseStatus status;

public void setStatus(CourseStatus status) {
    this.status = status;
}

@Key
public FilterKey getKey() {
    StandardFilterKey key = new StandardFilterKey();
    key.addParameter(status);
    return key;
}

@Factory
public Filter getFilter() {
    String statusString = new EnumBridge().objectToString(this.status);
    Query query = new TermQuery(new Term("status", statusString));
    CachingWrapperFilter cachingWrapperFilter = new CachingWrapperFilter(new QueryWrapperFilter(query));
     return cachingWrapperFilter;
}}

and to enable my filter:

Code:

persistenceQuery.enableFullTextFilter("statusFilter").setParameter("status", CourseStatus.PUBLISHED);

When debugging the code, I can see that my query in the filter does get set to "status:PUBLISHED", but I still have 0 results, even though there should be dozens.

Any ideas of where to start?

sanne.grinovero · **Posted:** Thu Jun 16, 2011 3:16 pm

Hi kevmo,
I think that your filter is not matching any result, very likely the string you're getting as output of

Code:

String statusString = new EnumBridge().objectToString(this.status);

is not the same as is stored in the index.

I suspect that the actual text you have in the index is lowercased, because you're using @Field(index = Index.TOKENIZED) on the status, while you likely want @Field(index = Index.UN_TOKENIZED)

kevmo · **Joined:** Wed Jun 15, 2011 2:53 pm **Posts:** 2

You are a genius. That was my problem. Thank you so much!!

sanne.grinovero · **Posted:** Fri Jun 17, 2011 4:07 am

just some experience with the most common problems ;)
Remember: the Analyzer always processes the indexed text unless you use un_tokenized, which indexes the literal string. The search engine then searches for an exact match between your queries and indexed terms, so you should always be carefull to have your searches analyzed the same way you're indexing. That's why the QueryParser takes an analyzer argument, and why we made the QueryBuilder to make sure people match it properly.