CDI Integration

使用CDI(Contexts and Dependency Injection)，可以简化Spring Data Elasticsearch存储库的设置。通过@Produces注解，可以在CDI容器中生成ElasticsearchTemplate实例。然后，CDI框架会自动将ElasticsearchOperations接口及其实现注入到客户端代码中，简化了存储库和Elasticsearch模板的访问。这种方法允许开发者专注于业务逻辑，而无需管理Elasticsearch连接。

Spring Data Elasticsearch 存储库也可以使用 CDI 功能设置。

The Spring Data Elasticsearch repositories can also be set up using CDI functionality.

Example 1. Spring Data Elasticsearch repositories using CDI

class ElasticsearchTemplateProducer {

  @Produces
  @ApplicationScoped
  public ElasticsearchOperations createElasticsearchTemplate() {
    // ...                               1
  }
}

class ProductService {

  private ProductRepository repository;  2
  public Page<Product> findAvailableBookByName(String name, Pageable pageable) {
    return repository.findByAvailableTrueAndNameStartingWith(name, pageable);
  }
  @Inject
  public void setRepository(ProductRepository repository) {
    this.repository = repository;
  }
}

1	Create a component by using the same calls as are used in the Elasticsearch Operations chapter.
2	Let the CDI framework inject the Repository into your class.