在Spring java框架中使用ElasticSearch的最佳方法

Spring数据elasticsearch支持弹性搜索的大多数常见功能集,包括嵌套,内部对象和父子(最近).

当你说要使用嵌套数据(内部对象)时,请清楚,因为elasticsearch有两个概念:内部对象和嵌套对象.

在弹性搜索中管理关系可以找到详细的解释

嵌套文档示例

人员实体:

@Document(indexName = "person" , type = "user")

public class Person {

    @Id
    private String id;

    private String name;

    @Field( type = FieldType.Nested)
    private List<Car> car;

    // setters-getters
}

汽车实体:

public class Car {
    private String name;
    private String model;
    //setters and getters 
}

设置数据:

Person foo = new Person();
foo.setName("Foo");
foo.setId("1");

List<Car> cars = new ArrayList<Car>();
Car subaru = new Car();
subaru.setName("Subaru");
subaru.setModel("Imprezza");
cars.add(subaru);
foo.setCar(cars);

索引:

IndexQuery indexQuery = new IndexQuery();
indexQuery.setId(foo.getId());
indexQuery.setObject(foo);

//creating mapping
elasticsearchTemplate.putMapping(Person.class);
//indexing document
elasticsearchTemplate.index(indexQuery);
//refresh
elasticsearchTemplate.refresh(Person.class, true);

搜索:

QueryBuilder builder = nestedQuery("car", boolQuery()
    .must(termQuery("car.name", "subaru"))
    .must(termQuery("car.model", "imprezza")));

SearchQuery searchQuery = new NativeSearchQueryBuilder().withQuery(builder).build();
List<Person> persons = elasticsearchTemplate.queryForList(searchQuery, Person.class);

您可以在嵌套对象测试中找到有关嵌套和内部对象的更多测试用例