elasticsearch - 如何从构面中排除过滤器？

Question

我有 Solr 背景，正在尝试找到 "tagging" and "excluding" 的等价物在 Elasticsearch 中。

在下面的示例中，如何从 prices facet 的计算中排除 price 过滤器？换句话说，prices 方面应该考虑除 price 之外的所有过滤器。

{
  query : {
    "filtered" : {
      "query" : {
        "match_all" : {}
      },
      "filter" : {
        "and" : [
          {
            "term" : {
              "colour" : "Red"
            }
          },
          {
            "term" : {
              "feature" : "Square"
            }
          },
          {
            "term" : {
              "feature" : "Shiny"
            }
          },
          {
            "range" : {
              "price" : { 
                "from" : "10",
                "to" : "20"
              }
            }
          }
        ]
      }
    }
  },
  "facets" : {
    "colours" : {
      "terms" : {
        "field" : "colour"
      }
    },
    "features" : {
      "terms" : {
        "field" : "feature"
      }
    },
    "prices" : {
      "statistical" : {
        "field" : "price"
      }
    }
  }
}

Answer 1

您可以将价格过滤器作为顶级过滤器应用于您的查询，并将其作为 facet_filter 添加到期望价格的所有方面:

{
  query : {
    "filtered" : {
      "query" : {
        "match_all" : {}
      },
      "filter" : {
        "and" : [
          {
            "term" : {
              "colour" : "Red"
            }
          },
          {
            "term" : {
              "feature" : "Square"
            }
          },
          {
            "term" : {
              "feature" : "Shiny"
            }
          }
        ]
      }
    }
  },
  "facets" : {
    "colours" : {
      "terms" : {
        "field" : "colour"
      },
      "facet_filter" : {
        "range" : { "price" : {  "from" : "10", "to" : "20" } }
      }
    },
    "features" : {
      "terms" : {
        "field" : "feature"
      },
      "facet_filter" : {
        "range" : { "price" : {  "from" : "10", "to" : "20" } }
      }
    },
    "prices" : {
      "statistical" : {
        "field" : "price"
      }
    }
  },
  "filter": {
    "range" : { "price" : {  "from" : "10", "to" : "20" } }
  }
}