arrays - 仅当值位于数组的第一行时，才匹配数组中的匹配字段

Question

我有一个包含带有对象数组的文档的索引，称为产品。产品有一个名为feed_id的字段，我将其映射为products.feed_id(文本)。

但是，当我执行匹配查询时，我只是找到匹配的feed_id在数组第一行中的文档。我是否需要将产品映射为嵌套(我曾尝试过，但是还不行，我是否还需要将数组中的字段映射？)

我添加了映射/查询和未找到的示例文档。 (如果feed_id是数组的第1行，则会找到其他文档)

映射

{
"products-nl" : {
  "aliases" : { },
  "mappings" : {
    "product" : {
      "dynamic" : "false",
      "properties" : {
        "brand" : {
          "type" : "text"
        },
        "brand_keyword" : {
          "type" : "keyword"
        },
        "description_short" : {
          "type" : "text"
        },
        "eancode" : {
          "type" : "text"
        },
        "full_title" : {
          "type" : "text"
        },
        "price" : {
          "type" : "float"
        },
        "products" : {
          "properties" : {
            "category_string" : {
              "type" : "text"
            },
            "feed_id" : {
              "type" : "integer"
            },
            "full_shop_title" : {
              "type" : "text"
            },
            "shop_title" : {
              "type" : "keyword"
            },
            "shop_title_search" : {
              "type" : "text"
            },
            "title" : {
              "type" : "text"
            }
          }
        },
        "providers" : {
          "type" : "nested"
        },
        "shop_amount" : {
          "type" : "integer"
        },
        "shop_title_search" : {
          "type" : "text"
        },
        "timestamp" : {
          "type" : "date"
        },
        "title" : {
          "type" : "keyword"
        },
        "total_price" : {
          "type" : "float"
        }
      }
    }
  },
  "settings" : {
    "index" : {
      "creation_date" : "1547042901221",
      "number_of_shards" : "5",
      "number_of_replicas" : "0",
      "uuid" : "OUXvA4kiTJCs1L30ZoYv1w",
      "version" : {
        "created" : "6050499"
      },
      "provided_name" : "products-nl"
    }
  }
}

}

查询

GET products-nl/_search
  {
    "size": 3000,
    "query": {
      "match": {
        "products.feed_id": 15621
      }
    }
  }

文档(应该找到它是因为feed_id在其中，但是在产品的第3行上)。

{
"_source": {
  "title": "Disney Frozen 18 Inch 28 cm Meisjes Terugtraprem Mintgroen",
  "products": {
    "0": {
      "title": "Disney Frozen 18 Inch 28 cm Meisjes Terugtraprem Mintgroen",
      "feed_id": "53"
    },
    "2": {
      "title": "Disney Frozen 18 Inch 28 cm Meisjes Terugtraprem Mintgroen",
      "feed_id": "3564"
    },
    "3": {
      "title": "Kinderfiets 18 Inch Meisjes Disney Frozen 51861",
      "feed_id": "15621"
    },
    "4": {
      "title": "Disney Frozen meisjesfiets  18 inch",
      "feed_id": "3251"
    },
    "5": {
      "title": "Disney Frozen 18 Inch Meisjesfiets",
      "feed_id": "6192"
    },
    "6": {
      "title": "Disney Frozen 18 inch meisjesfiets 95 afgemonteerd",
      "feed_id": "460"
    },
    "7": {
      "title": "Disney Frozen 18 inch meisjesfiets",
      "feed_id": "15882"
    },
    "8": {
      "title": "Disney Frozen 95 Meisjes 2018 18inch Blauw",
      "feed_id": "180"
    },
    "9": {
      "title": "Disney Frozen 18 inch meisjesfiets 95 afgemonteerd",
      "feed_id": "399"
    }
  }
}

}

Answer 1

我认为原因是(1)您已禁用动态映射，以及(2)products项的结构与定义的映射不匹配。因此，即使这些字段出现在_source字段(see documentation)中，也不会对其进行索引(即不可搜索)。

让我更精确一些。 products项的映射将匹配以下内容:

"products": [
  {
    "title": "Disney Frozen 18 Inch 28 cm Meisjes Terugtraprem Mintgroen",
    "feed_id": "53"
  },
  ...
  {
    "title": "Kinderfiets 18 Inch Meisjes Disney Frozen 51861",
    "feed_id": "15621"
  },
  ...
]

相反，您有:

"products": {
  "0": {
    "title": "Disney Frozen 18 Inch 28 cm Meisjes Terugtraprem Mintgroen",
    "feed_id": "53"
  },
  ...
  "3": {
    "title": "Kinderfiets 18 Inch Meisjes Disney Frozen 51861",
    "feed_id": "15621"
  },
  ...
}

，这是一个非常不同的映射。由于这些项目与映射不匹配，并且由于禁用了动态映射，因此无法搜索 products项目。