elasticsearch - Elasticsearch geo_shape过滤器无结果

Question

在嵌套位置上进行过滤时，让我的geo_shape过滤器返回结果时遇到问题。

假设我有以下内容:

PUT test/test/_mapping
{
  "properties": {
    "name": {
      "type": "string"
    },
    "gatheringEvent": {
      "properties": {
        "siteCoordinates": {
          "type": "nested",
          "properties": {
            "point": {
              "type": "geo_shape"
            }
          }
        }
      }
    },
    "point": {
      "type": "geo_shape"
    }
  }
}

现在，当我索引以下文档时:

POST test/test/1
{
  "name": "Bird",
  "gatheringEvent.siteCoordinates.point": {
    "type": "point",
    "coordinates": [
      5,
      5
    ]
  },
  "point": {
    "type": "point",
    "coordinates": [
      5,
      5
    ]
  }
}

执行以下查询:(在非嵌套位置使用geo_shape过滤器)

GET test/test/_search
{
  "query": {
    "filtered": {
      "query": {
        "match": {
          "name": "Bird"
        }
      },
      "filter": {
        "geo_shape": {
          "point": {
            "shape": {
              "type": "polygon",
              "coordinates": [
                [
                  [0 ,0 ],
                  [10 ,0],
                  [10,10],
                  [0,10 ],
                  [0 ,0 ]
                ]
              ]
            },
            "relation": "within"
          }
        }
      }
    }
  }
}

如我所愿，把文件还给我。

但是在嵌套位置执行geo_shape过滤器时:

GET test/test/_search
{
  "query": {
    "filtered": {
      "query": {
        "match": {
          "name": "Bird"
        }
      },
      "filter": {
        "nested": {
          "path": "gatheringEvent.siteCoordinates",
          "filter": {
            "geo_shape": {
              "gatheringEvent.siteCoordinates.point": {
                "shape": {
                  "type": "polygon",
                  "coordinates": [
                    [
                      [0 ,0 ],
                      [10 ,0],
                      [10,10],
                      [0,10 ],
                      [0 ,0 ]
                    ]
                  ]
                },
                "relation": "within"
              }
            }
          }
        }
      }
    }
  }
}

没有结果。

我也删除了嵌套映射，因为我认为这可能是问题所在，但是一旦“point”字段位于对象类型字段中，我就没有结果。

对我在这里做错的任何想法吗？

谢谢。

Answer 1

我在这里看到几个问题:

看起来您想要两个级别的嵌套(除非这是一个错误)，因此，如果您希望能够在查询中使用nested过滤器，则需要在映射中指定两个级别。

使用嵌套结构索引文档时，不能使用点语法。该语法仅用于查询。如果您在对文档建立索引之前和之后查看映射，则会发现在为文档建立索引时会添加一个名为"gatheringEvent.siteCoordinates.point"的顶级属性，这大概不是您想要的。

您可以通过几种不同的方式进行操作。这就是我能够使其工作的方式。首先，我修改了映射以包括两个嵌套层，并创建了如下索引:

DELETE /test_index

PUT /test_index
{
   "settings": {
      "number_of_shards": 1,
      "number_of_replicas": 0
   }
}

PUT /test_index/doc/_mapping
{
   "properties": {
      "name": {
         "type": "string"
      },
      "gatheringEvent": {
         "type": "nested",
         "properties": {
            "siteCoordinates": {
               "type": "nested",
               "properties": {
                  "point": {
                     "type": "geo_shape"
                  }
               }
            }
         }
      },
      "point": {
         "type": "geo_shape"
      }
   }
}

然后，我为两个层次的嵌套使用正确的结构索引了您的文档:

POST /test_index/doc/1
{
   "name": "Bird",
   "gatheringEvent": [
      {
         "siteCoordinates": [
            {
               "point": {
                  "type": "point",
                  "coordinates": [5, 5]
               }
            }
         ]
      }
   ],
   "point": {
      "type": "point",
      "coordinates": [5, 5]
   }
}

我还在边界框外添加了第二个文档，以进行完整性检查:

POST /test_index/doc/2
{
   "name": "Bird",
   "gatheringEvent": [
      {
         "siteCoordinates": [
            {
               "point": {
                  "type": "point",
                  "coordinates": [6, 11]
               }
            }
         ]
      }
   ],
   "point": {
      "type": "point",
      "coordinates": [6, 11]
   }
}

现在，您的两个查询都能按预期工作:

POST /test_index/doc/_search
{
  "query": {
    "filtered": {
      "query": {
        "match": {
          "name": "Bird"
        }
      },
      "filter": {
        "nested": {
          "path": "gatheringEvent.siteCoordinates",
          "filter": {
            "geo_shape": {
              "gatheringEvent.siteCoordinates.point": {
                "shape": {
                  "type": "polygon",
                  "coordinates": [
                    [
                      [0, 0],
                      [10, 0],
                      [10, 10],
                      [0, 10],
                      [0, 0]
                    ]
                  ]
                },
                "relation": "within"
              }
            }
          }
        }
      }
    }
  }
}
{
   "took": 2,
   "timed_out": false,
   "_shards": {
      "total": 1,
      "successful": 1,
      "failed": 0
   },
   "hits": {
      "total": 1,
      "max_score": 1.6931472,
      "hits": [
         {
            "_index": "test_index",
            "_type": "doc",
            "_id": "1",
            "_score": 1.6931472,
            "_source": {
               "name": "Bird",
               "gatheringEvent": [
                  {
                     "siteCoordinates": [
                        {
                           "point": {
                              "type": "point",
                              "coordinates": [
                                 5,
                                 5
                              ]
                           }
                        }
                     ]
                  }
               ],
               "point": {
                  "type": "point",
                  "coordinates": [
                     5,
                     5
                  ]
               }
            }
         }
      ]
   }
} 

如果您实际上只想要一个嵌套级别，那就更简单了。我也可以根据需要添加该代码。

这是我使用的代码:

http://sense.qbox.io/gist/e61259626d5f8525ee41ce7b049af25089bfb8f6