elasticsearch - spring-data-elasticsearch 和更新

Question

我正在使用 spring-data-elasticsearch 进行 CRUD 操作。

我有一个扩展 ElasticsearchRepository 的自定义存储库。

最终 ElasticsearchRepository 扩展了 CrudRepository 这意味着更新现有记录是可能的。

问题是，你如何做到这一点？我还没有找到一个叫做“update()”的方法

我认为执行以下操作会起作用(从 https://github.com/BioMedCentralLtd/spring-data-elasticsearch-sample-application 窃取的代码)

    //create
    Book book = new Book();
    book.setId("123455");
    book.setName("Spring Data Elasticsearch");
    book.setVersion(System.currentTimeMillis());
    repository.save(book);

    //update
    book.setName("THIS IS A COMPLETELY NEW TITLE");
    repository.save(book); 

但是，第二次保存会引发 InvocationTargetException

用调试器检查它显示:

[book][0] [book][123455]: version conflict, current [1447792071681], provided [1447792071681]

Book 对象如下所示:

@Document(indexName = "book",type = "book" , shards = 1, replicas = 0, indexStoreType = "memory", refreshInterval = "-1")
public class Book {

    @Id
    private String id;
    private String name;
    private Long price;
    @Version
    private Long version;

    public Map<Integer, Collection<String>> getBuckets() {
        return buckets;
    }

    public void setBuckets(Map<Integer, Collection<String>> buckets) {
        this.buckets = buckets;
    }

    @Field(type = FieldType.Nested)
    private Map<Integer, Collection<String>> buckets = new HashMap();

    public Book(){}

    public Book(String id, String name,Long version) {
        this.id = id;
        this.name = name;
        this.version = version;
    }

    getters and setters removed for space

}

我的 Repository 代码更简单:

import org.springframework.data.elasticsearch.entities.Book;
import org.springframework.data.elasticsearch.repository.ElasticsearchRepository;

public interface BookRepository extends ElasticsearchRepository<Book, Long> {

}

我必须提供更新方法吗？

编辑:

没关系。我将更新更改为:

    //update
    book.setName("THIS IS A COMPLETELY NEW TITLE");
    book.setVersion(System.currentTimeMillis());
    repository.save(book); 

它更新了记录。

Answer 1

您可以使用 UpdateQuery 和 ElasticSearchTemplate 来更新任何部分文档。例如

    final UpdateRequest updateRequest = new UpdateRequest();
    updateRequest.index(mainIndexName);
    updateRequest.type(typeName);
    updateRequest.id(id);
    updateRequest.doc(XContentFactory.jsonBuilder().startObject()
                        .field("accountType", accountType)
                        .endObject());
    final UpdateQuery updateQuery = new UpdateQueryBuilder().withId(id)
                        .withClass(<DocumentClass>).withUpdateRequest(updateRequest).build();
    UpdateResponse updateResponse =  elasticSearchTemplate.update(updateQuery);