Elasticsearch突出显示:查询使用"copy_to"创建的自定义"_all"字段 [英] Elasticsearch highlighting: "multi-match" query on custom "_all"-fields created with "copy_to"

问题描述

(Elasticsearch 5.2.2)

(Elasticsearch 5.2.2)

我在突出显示以正常工作方面遇到了一些麻烦.我的映射有2个通过 copy_to 创建的自定义创建的 _all 字段 myall1 和 myall2 :

I'm having some trouble getting highlighting to work correctly. My mapping has 2 custom created _all-fields myall1 and myall2 that are created via copy_to:

"mytype": {
  "_all": {
    "enabled": false
  },
  "properties": {
    "myall": {
        "type": "text",
        "analyzer": "standard",
        "store": true
    },
    "myall2": {
        "type": "text",
        "analyzer": "standard",
        "store": true
    },
    "field1": {
        "type": "text",
        "copy_to": "myall1",
        "analyzer": "keyword"
    },
    "field2": {
        "type": "text",
        "copy_to": "myall2",
        "analyzer": "keyword"
    }
}

文档如下所示:

{
  "field1": "example text",
  "field2": "another text"
}

现在我正在运行 multi_match 查询，该查询将 myall1 提升3:

Now I'm running a multi_match-query that boosts myall1 by 3:

POST /myindex/mytype/_search
{
  "query": {
    "bool": {
      "must": {
        "multi_match": {
          "fields": ["myall1^3", "myall2"],
          "type": "cross_fields",
          "query": "example text",
          "operator": "and"
        }
      }
    }
  }
}

这很好.问题是我无法在结果中突出显示原始源字段.我将以下内容添加到查询中，方法与在ES-docs"_all示例"中完成的方式相同:

This works quite well. The problem is that I cannot highlight the original source-fields in the result. I'm adding the following to the query the same way it is done in the ES-docs "_all example":

  ,
  "highlight": {
    "pre_tags": ["<span class='highlight'>"],
    "post_tags": ["</span>"],
    "fields": {
      "*": {"require_field_match": false}
    }
  }

这仅使我突出显示"myall1"和"myall2"，而不是原始字段"field1"和"field2".

This gives me only the highlighting in "myall1" and "myall2", NOT in the original fields "field1" and "field2".

如果我通过使用_all-field做类似的事情，那么一切都会按预期进行.主要区别在于:我使用的是 multi_match ，而示例使用的是 query_string .玩"store":true和"analyzer":"standard"并没有帮助.

If I do something similar by using the _all-field, everything works as expected. The main difference is: I'm using multi_match while the examples use query_string. Playing with "store":true and "analyzer":"standard" didn't help.

由于我的实际文档使用的嵌套对象必须是可搜索的，所以我可能无法执行完全不同的查询方法.

As my actual document uses nested-objects that must be searchable, I might not be able to do a completely different query-approach.

这是设计使然还是我缺少什么?相反，使用"_all"字段不允许我以尝试实现的方式提升结果.

Is this by design or am I missing something? Using the "_all"-field instead would not allow me to boost results the way I'm trying to implement it.

推荐答案

修复了该问题.似乎突出显示原始字段要求他们使用与复制到"目标字段相同的分析器.否则，它们根本不会出现.

Fixed it. Seems that highlighting of the original fields requires them to use the same analyzer as the "copy-to" target field does. Otherwise they simply won't show up.

我之前使用的是"analyzer":"keyword"，因为我不打算在这些字段上进行实际查询.现在一切都按预期进行.

I was using "analyzer":"keyword" before as I did not plan to do actual queries on those fields. Now everything works as expected.

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