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我正在开发一个可以存储数百个属性的属性聚合网站。为了映射区域，我使用 Elastic Search 的 GEO Hashing 来减少给定缩放级别返回的匹配数。

生成哈希的代码如下：

`GET _search
 {
"from": 0,
"size": 0,
"query": {
    "match_all": {}
},
"filter": {
    "and": [{
        "range": {
            "property.price": {
                "lte": 1000000000
            }
        }
    }, {
        "geo_bounding_box": {
            "property.location": {
                "top_left": {
                    "lat": 42.88679,
                    "lon": -73.5081419
                },
                "bottom_right": {
                    "lat": 41.2390897,
                    "lon": -69.9279921
                }
            }
        }
    }, {
        "term": {
            "property.rental": false
        }
    }, {
        "term": {
            "property.country": "US"
        }
    }]
},
"sort": [{
    "property.price": "asc"
}],
"facets": {
    "stat1": {
        "statistical": {
            "field": "price"
        }
    }
},
"aggs": {
    "geohash": {
        "filter": {
            "geo_bounding_box": {
                "property.location": {
                    "top_left": {
                        "lat": 42.88679,
                        "lon": -73.5081419
                    },
                    "bottom_right": {
                        "lat": 41.2390897,
                        "lon": -69.9279921
                    }
                }
            }
        },
        "aggregations": {
            "locations": {
                "geohash_grid": {
                    "field": "location",
                    "precision": 8
                }
            }
        }
    }
}

}`

生成的 JSON 返回每个 GeoHash 的匹配数并且正在工作，除了似乎没有任何方法可以在结果中包含属性详细信息，或者包含一个 ID 以在单击时返回它？

结果如下：

`{
   "took": 94,
   "timed_out": false,
   "_shards": {
      "total": 5,
      "successful": 5,
      "failed": 0
   },
   "hits": {
   "total": 13,
   "max_score": 0,
   "hits": []
},
   "facets": {
   "stat1": {
     "_type": "statistical",
     "count": 50,
     "total": 90640800,
     "min": 1,
     "max": 19500000,
     "mean": 1812816,
     "sum_of_squares": 628677324820002,
     "variance": 9287244646544.04,
     "std_deviation": 3047498.0962330457
  }
   },
   "aggregations": {
   "geohash": {
         "doc_count": 16,
         "locations": {
            "buckets": [
           {
              "key": "drt05n43",
              "doc_count": 2
           },
           {
              "key": "drt0v0q8",
              "doc_count": 1
           },
           {
              "key": "drt0sr3e",
              "doc_count": 1
           },
           {
              "key": "drt0kgr8",
              "doc_count": 1
           },
           {
              "key": "drt07sdk",
              "doc_count": 1
           },
           {
              "key": "drt075vd",
              "doc_count": 1
           },
           {
              "key": "drt05n19",
              "doc_count": 1
           },
           {
              "key": "drt05jgv",
              "doc_count": 1
           },
           {
              "key": "drsbrgvh",
              "doc_count": 1
           },
           {
              "key": "drmpgznd",
              "doc_count": 1
           },
           {
              "key": "drmpft6c",
              "doc_count": 1
           },
           {
              "key": "drmpe6bg",
              "doc_count": 1
           },
           {
              "key": "drmp7ybz",
              "doc_count": 1
           },
           {
              "key": "drmgkj77",
              "doc_count": 1
           },
           {
              "key": "drkzzj3d",
              "doc_count": 1
           }
        ]
     }
  }

} }`

在向结果中添加其他属性数据的任何帮助将不胜感激。

谢谢 ：）

ps 对代码意图感到抱歉，SO 的 JSON 代码检测有点奇怪。

4

1 回答 1

0

您可能可以使用嵌套聚合： http ://www.elasticsearch.org/guide/en/elasticsearch/guide/current/nested-aggregation.html

使用来自http://www.fullscale.co/elasticjs/的 elastic.js

ejs.GeoHashGridAggregation('Geohash-Grid')
            .field('Geohash')
            .precision(precision)
            .aggregation(
                ejs.TermsAggregation('HouseType').field('HouseType')
            )
            .aggregation(
                ejs.TermsAggregation('HouseColor').field('HouseColor')
            )
        );

但这只是一个例子。然后，输出将具有与每个 geohash 匹配的文档的嵌套聚合计数。

于 2015-01-16T19:13:08.933 回答