elasticsearch - 在Elasticsearch中是否可以按地理形状类型进行搜索

Question

我有以下索引映射:

PUT testing/_mapping
{
  "properties": {
    "location": {
      "type": "geo_shape"
    }
  }
}

我索引了两个文档:

PUT testing/_doc/1
{
  "location": {
    "type": "point",
    "coordinates": [13.400544, 52.530286]
  }
}
PUT testing/_doc/2
{
  "location": {
    "type" : "linestring",
    "coordinates" : [[-77.03653, 38.897676], [-77.009051, 38.889939]]
  }
}

现在，我想按其地理形状类型查找文档，例如只有type=point(文档1)所在的文档。在Elasticsearch中可以吗？我尝试了以下搜索，但始终返回0个结果。

GET testing/_search
{
  "query":{
    "bool": {
      "must": [
        {
          "term": {
            "location.type": {
              "value": "point"
            }
          }
        }
      ]
    }
  }
}

我正在使用Elasticsearch 7.2.1。

Answer 1

您无法通过location.type字段进行搜索，这是不可搜索的。

我建议您还要在另一个字段中索引形状的类型，如下所示:

PUT testing/_doc/1
{
  "location": {
    "type": "point",
    "coordinates": [13.400544, 52.530286]
  },
  "type": "point"
}
PUT testing/_doc/2
{
  "location": {
    "type" : "linestring",
    "coordinates" : [[-77.03653, 38.897676], [-77.009051, 38.889939]]
  },
  "type": "linestring"
}

然后您可以像这样搜索:

GET testing/_search
{
  "query":{
    "bool": {
      "must": [
        {
          "term": {
            "type.keyword": "point"
          }
        }
      ]
    }
  }
}