休眠搜索分區請求

Question

我正在創建一個REST API，Angular 2在前端和Spring在後端的Web站點。當我查看請求結果時，有無限滾動。我正在使用全文搜索來查找我的請求的匹配項。我的問題是如何在我的Hibernate搜索中創建分段請求？如果可能，請介紹一些代碼示例。

的代碼和平，我使用的全文檢索

@Repository 
@Transactional 
public class HibernateSearch { 
@PersistenceContext 
    private EntityManager entityManager; 

    public List<Manual> fulltextSearching(String keyword){ 
    if(keyword.equals("")) return Collections.emptyList(); 
    FullTextEntityManager fullTextEntityManager = 
      org.hibernate.search.jpa.Search.getFullTextEntityManager(entityManager); 
    QueryBuilder qb = fullTextEntityManager.getSearchFactory() 
      .buildQueryBuilder().forEntity(Manual.class).get(); 
    javax.persistence.Query jpaQuery = 
      fullTextEntityManager.createFullTextQuery(createQuery(qb, keyword), Manual.class); 
    @SuppressWarnings("unchecked") 
    List<Manual> result = jpaQuery.getResultList(); 
    return result; 
    } 

private org.apache.lucene.search.Query createQuery(QueryBuilder qb, String keyword){ 
    return qb 
      .keyword() 
      .onFields("name", "introduction", "user.username", "tags.name") 
      .matching(keyword) 
      .createQuery(); 
    } 


} 

Answer 1

使用分頁，由Java持久性API提供：

@Repository 
@Transactional 
public class HibernateSearch { 
@PersistenceContext 
    private EntityManager entityManager; 

    public List<Manual> fulltextSearching(String keyword, int offset, int limit){ 
    if(keyword.equals("")) return Collections.emptyList(); 
    FullTextEntityManager fullTextEntityManager = 
      org.hibernate.search.jpa.Search.getFullTextEntityManager(entityManager); 
    QueryBuilder qb = fullTextEntityManager.getSearchFactory() 
      .buildQueryBuilder().forEntity(Manual.class).get(); 
    javax.persistence.Query jpaQuery = 
      fullTextEntityManager.createFullTextQuery(createQuery(qb, keyword), Manual.class); 

    // ADDED CODE HERE 
    jpaQuery.setFirstResult(offset); 
    jpaQuery.setMaxResults(limit); 

    @SuppressWarnings("unchecked") 
    List<Manual> result = jpaQuery.getResultList(); 
    return result; 
    } 

private org.apache.lucene.search.Query createQuery(QueryBuilder qb, String keyword){ 
    return qb 
      .keyword() 
      .onFields("name", "introduction", "user.username", "tags.name") 
      .matching(keyword) 
      .createQuery(); 
    } 


} 

結果默認由相關性排序，所以沒有必要添加排序。