弹性搜索限制结果类型 [英] elastic search limit results for types

问题描述

我有以下查询

$queryDefinition = [
        'query' => [
            'bool' => [
                'must' => [
                    [
                        'query_string' => [
                            'default_field' => '_all',
                            'query' => $term
                        ]
                    ]
                ],
                'must_not' => [],
                'should' => []
            ],
        ],
        //'filter' => [
        //    'limit' => ['value' => 3],
        //],
        'from' => 0,
        'size' => 50,
        'sort' => [],
        'facets' => [
            'types' => [
                    'terms' => ['field' => '_type']
                ]
            ]
    ];

在索引中我们有5种类型，我想只显示每个类型的3个结果，用于自动完成当我设置过滤器限制时，只有第一个类型的结果被过滤，对于其他类型，我得到所有的结果。

in the index we have 5 types, and i would like to show only 3 results from each type, for autocomplete. when i set the filter limit only the results from the first type are filtered, for other types i get all the results.

我该怎么办？

谢谢

推荐答案

{
  "aggregations": {
    "types": {
      "terms": {
        "field": "_type"
      },
      "hits": {
        "top_hits": {
          "size": 3
        }
      }
    }
  }
}

如果您使用ElasticSearch 1.4.0，可以使用术语聚合，并使用热门聚合作为子聚合并设置它大小为3（在您的情况下）。

If you're using ElasticSearch 1.4.0, you can use terms aggregation on "_type" field and use top hits aggregation as sub aggregation and set its size to 3 (in your case).

希望有所帮助。

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