Elasticsearch——Geo-bounding box query

匹配与边界框相交的geo_point和geo_shape。

例子：

假设以下文档已编制索引：

PUT /my_locations
{
  "mappings": {
    "properties": {
      "pin": {
        "properties": {
          "location": {
            "type": "geo_point"
          }
        }
      }
    }
  }
}

PUT /my_locations/_doc/1
{
  "pin": {
    "location": {
      "lat": 40.12,
      "lon": -71.34
    }
  }
}

PUT /my_geoshapes
{
  "mappings": {
    "properties": {
      "pin": {
        "properties": {
          "location": {
            "type": "geo_shape"
          }
        }
      }
    }
  }
}

PUT /my_geoshapes/_doc/1
{
  "pin": {
    "location": {
      "type" : "polygon",
      "coordinates" : [[[13.0 ,51.5], [15.0, 51.5], [15.0, 54.0], [13.0, 54.0], [13.0 ,51.5]]]
    }
  }
}

使用geo_bounding_box filter匹配与边界框相交的geo_point 值。要定义长方体，请为两个相对的角点提供地质点值。

GET my_locations/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "top_left": {
              "lat": 40.73,
              "lon": -74.1
            },
            "bottom_right": {
              "lat": 40.01,
              "lon": -71.12
            }
          }
        }
      }
    }
  }
}

使用相同的过滤器匹配与边界框相交的geo_shape值：

GET my_geoshapes/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "top_left": {
              "lat": 40.73,
              "lon": -74.1
            },
            "bottom_right": {
              "lat": 40.01,
              "lon": -71.12
            }
          }
        }
      }
    }
  }
}

要同时匹配geo_point和geo_shape值，请搜索两个索引：

GET my_locations,my_geoshapes/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "top_left": {
              "lat": 40.73,
              "lon": -74.1
            },
            "bottom_right": {
              "lat": 40.01,
              "lon": -71.12
            }
          }
        }
      }
    }
  }
}

公认格式

与geo_point类型可以接受geo point的不同表示方式大致相同，过滤器也可以接受它：

Lat Lon As Properties

GET my_locations/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "top_left": {
              "lat": 40.73,
              "lon": -74.1
            },
            "bottom_right": {
              "lat": 40.01,
              "lon": -71.12
            }
          }
        }
      }
    }
  }
}

Lat Lon As Array

[lon，lat]格式，注意，此处lon/lat的顺序，以符合GeoJSON。

GET my_locations/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "top_left": [ -74.1, 40.73 ],
            "bottom_right": [ -71.12, 40.01 ]
          }
        }
      }
    }
  }
}

Lat Lon As String

Format in lat,lon.

GET my_locations/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "top_left": "40.73, -74.1",
            "bottom_right": "40.01, -71.12"
          }
        }
      }
    }
  }
}

Bounding Box as Well-Known Text (WKT)

GET my_locations/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "wkt": "BBOX (-74.1, -71.12, 40.73, 40.01)"
          }
        }
      }
    }
  }
}

Geohash

GET my_locations/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "top_left": "dr5r9ydj2y73",
            "bottom_right": "drj7teegpus6"
          }
        }
      }
    }
  }
}

使用地理哈希指定边界框边缘的边界时，地理哈希将被视为矩形。定义边界框时，其左上角对应于top_left参数中指定的geohash的左上角，其右下角定义为bottom_right参数中指定的geohash的右下角。

为了指定与geohash整个区域匹配的边界框，可以在左上角和右下角参数中指定geohash：

GET my_locations/_search
{
  "query": {
    "geo_bounding_box": {
      "pin.location": {
        "top_left": "dr",
        "bottom_right": "dr"
      }
    }
  }
}

在本例中，geohash dr将生成边界框查询，左上角为45.0，-78.75，右下角为39.375，-67.5。

顶点

边界框的顶点可以通过“top_left”和“bottom_right”参数设置，也可以通过“top_right”和“bottom_left”参数设置。更多关于topLeft、bottomRight、topRight和bottomLeft的名称均受支持。可以使用简单的名称top、left、bottom和right分别设置值，而不是成对设置值。

GET my_locations/_search
{
  "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": {
        "geo_bounding_box": {
          "pin.location": {
            "top": 40.73,
            "left": -74.1,
            "bottom": 40.01,
            "right": -71.12
          }
        }
      }
    }
  }
}