弹性搜索 - 如何只返回数据，而不是元信息？ [英] Elasticsearch - how to return only data, not meta information?

问题描述

当进行搜索时，Elasticsearch返回一个包含各种元信息的数据结构。

When doing a search, Elasticsearch returns a data structure that contains various meta information.

实际结果集包含在JSON结果中的命中字段中从数据库返回。

The actual result set is contained within a "hits" field within the JSON result returned from the database.

Elasticsearch是否可以只返回所需的数据（hits字段的内容），而不会嵌入到所有其他元数据中

Is it possible for Elasticsearch to return only the needed data (the contents of then "hits" field) without being embedded within all the other meta data?

我知道我可以将结果解析成JSON并解压缩，但我不希望复杂性，麻烦，性能下降。

I know I could parse the result into JSON and extract it, but I don't want the complexity, hassle, performance hit.

谢谢！

以下是Elasticsearch返回的数据结构示例。

Here is an example of the data structure that Elasticsearch returns.

{
    "_shards":{
        "total" : 5,
        "successful" : 5,
        "failed" : 0
    },
    "hits":{
        "total" : 1,
        "hits" : [
            {
                "_index" : "twitter",
                "_type" : "tweet",
                "_id" : "1", 
                "_source" : {
                    "user" : "kimchy",
                    "postDate" : "2009-11-15T14:12:12",
                    "message" : "trying out Elastic Search"
                }
            }
        ]
    }
}

推荐答案

不，现在是不可能的。如果分析的性能和复杂性是主要问题，您可能需要考虑使用不同的客户端： java客户端或 Thrift插件，例如。

No, it's not possible at this moment. If performance and complexity of parsing are the main concerns, you might want to consider using different clients: java client or Thrift plugin, for example.

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