在Spring Java框架中使用ElasticSearch的最佳方法 [英] The Best way to use ElasticSearch in Spring java framework

问题描述

我正在开发一个系统，该系统计划将Elasticsearch用作数据存储库.我正在尝试选择开发我的应用程序的最佳方法，该应用程序可以对来自Elasticsearch的数据进行索引和查询.我拥有的系统是建立在Spring框架之上的.

I'm developing a system which is planning to use elasticsearch as an data repository. I'm trying to choose the best way to develop my application that can index and query data from elasticsearch. The system I have is built on top of Spring framework.

使用 Spring-data-elasticsearch ( https://github.com/spring-projects/spring-data-elasticsearch )?

还是使用 elasticsearch核心库本身是一个不错的选择吗?

Or is it a good choice to use elasticsearch core libraries itself?

我需要处理嵌套数据(内部对象)，但是Spring-data-elasticsearch最近似乎没有任何操作.

I need to handle nested data (inner object) but Spring-data-elasticsearch seems to have no operations for that recently.

我希望我可以找到问题的解决方案.预先感谢.

I hope I can find a solution for the question. Thanks in advance.

推荐答案

Spring数据Elasticsearch支持大多数Elasticsearch的常见功能集，包括嵌套，内部对象和父级子代.

Spring data elasticsearch supports most of the common feature set of elasticsearch including Nested, Inner Objects and Parent Child (recently).

当您说要使用嵌套数据(内部对象)时，请注意，因为elasticsearch有两个概念:内部对象和嵌套对象.

When you said that want to use nested data (inner object), please be clear as elasticsearch has two concepts: Inner Object and Nested Object.

有关详细说明，请参见 elasticsearch中的管理关系

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);

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