java - 使用特定分析器在 Hibernate 中执行搜索

Question

来自http://hibernate.org/search/documentation/getting-started/#indexing

EntityManager em = entityManagerFactory.createEntityManager();
FullTextEntityManager fullTextEntityManager =
    org.hibernate.search.jpa.Search.getFullTextEntityManager(em);
em.getTransaction().begin();

// create native Lucene query unsing the query DSL
// alternatively you can write the Lucene query using the Lucene query parser
// or the Lucene programmatic API. The Hibernate Search DSL is recommended though
QueryBuilder qb = fullTextEntityManager.getSearchFactory()
    .buildQueryBuilder().forEntity(Book.class).get();
org.apache.lucene.search.Query luceneQuery = qb
  .keyword()
  .onFields("title", "subtitle", "authors.name")
  .matching("Java rocks!")
  .createQuery();

// wrap Lucene query in a javax.persistence.Query
javax.persistence.Query jpaQuery =
    fullTextEntityManager.createFullTextQuery(luceneQuery, Book.class);

// execute search
List result = jpaQuery.getResultList();

如何使用与搜索上方的字段或实体所使用的分析器不同的特定分析器？

Answer 1

您可以通过以下方式覆盖用于特定字段或多个字段的分析器

 QueryBuilder qb = fullTextEntityManager.getSearchFactory()
        .buildQueryBuilder().forEntity(Book.class)
        .overridesForField("title","analyzerName")
        .get();

注意:要覆盖多个字段，您可以再次使用相同的调用，因为 overridesForField 方法返回一个entityContext 本身。

类似这样的事情

QueryBuilder qb = fullTextEntityManager.getSearchFactory()
            .buildQueryBuilder().forEntity(Book.class)
            .overridesForField("title","analyzerName")
            .overridesForField("subtitle","analyzerName2")
            .get();

这里是[文档]( https://docs.jboss.org/hibernate/search/4.0/api/org/hibernate/search/query/dsl/EntityContext.html#overridesForField(java.lang.String , java.lang.String))。