Hibernate Full text Search Pagination

Question

I am using Hibernate Fulltext search. I am currently using:

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-search</artifactId>
    <version>4.5.1.Final</version>
</dependency>

I am able to search all right. The question I have is this: How can I paginate my results? Is there any way I can get say 50 results first and then make calls when next page is requested for the next 50 results?

One way I'm thinking of would be to simply get the max ID and then start next search from Max+1 position, assuming ID's are generated in auto incremental order. But I think there must be more elegant approach.

Jillene

Answer 1

From the Hibernate search-query docs on pagination.

org.hibernate.Query fullTextQuery = 
    fullTextSession.createFullTextQuery( luceneQuery, Customer.class );
fullTextQuery.setFirstResult(15); //start from the 15th element
fullTextQuery.setMaxResults(10); //return 10 elements

Bridgettbridgette

Answer 2

You can convert your list result from List to Page example : if your get the search in List users . you can convert like this :

 NBPAGE: pages number you want 
 Pageable page=new PageRequest(0,NBPAGE,Sort.Direction.DESC,"date");
 Page<Annonce> PageList= new PageImpl<Annonce>(users ,page,users.size());

Diarist

Answer 3

To paginate with Pageable

  FullTextQuery fullTextQuery = getJpaQuery(bool.createQuery(), IconV2.class);
  fullTextQuery.setFirstResult(pageable.getPageSize() * pageable.getPageNumber())
               .setMaxResults(pageable.getPageSize());

  List<IconV2> results = fullTextQuery.getResultList();
  List<IconResourceV2> iconResult = results.stream()
      .map(iconV2 -> new IconResourceV2.IconResourceV2Builder(iconV2).build())
      .collect(Collectors.toList());

  return new PageImpl<>(iconResult, pageable, fullTextQuery.getResultSize());

Heel

Just a note. Last parameter to PageImp should be fullTextQuery.getResultSize() – Largehearted