Question

我试图让我的脑袋围绕嵌套查询，但我不能让它工作。 ES中有2个项目看起来像这样

 {
"_index": "catalog",
"_type": "products",
"_source": {
   "product": {
      "ean": "abc",
      "features": {
         "Product Type": "DVD player",
      },
      "color": "Black",
      "manufacturer": "Sony",
      "sitedetails": [
         {
            "name": "amazon.com",
            "sku": "zzz",
            "url": "http://www.amazon.com/dp/zzz"
         }
      ],
      "category": "Portable DVD Players"
   }
 }
},
{
"_index": "catalog",
"_type": "products",
"_source": {
   "product": {
      "ean": "def",
      "features": {
         "Product Type": "MP3 player",
      },
      "color": "Black",
      "manufacturer": "LG",
      "sitedetails": [
         {
            "name": "amazon.com",
            "sku": "aaa",
            "url": "http://www.amazon.com/dp/aaa"
         }
      ],
      "category": "MP3 Players"
   }
}

}

2个问题：

获得sku = zzz的卷曲是什么？

在搜索＆＃34;玩家＆＃34;这两个项目的卷曲是什么？

TNX！

Answer 1

Heyy兄弟，让我们做一些魔术。首先，您需要一个包含嵌套对象的映射，如此

curl -XPUT "http://192.168.99.100:9200/catalog" -d'
{
      "mappings": {
         "products": {
            "properties": {
               "product": {
                  "type": "nested",
                  "properties": {
                      "features": {
                        "type":"nested"  
                      },
                     "sitedetails": {
                        "type": "nested"
                     }
                  }
               }
            }
         }
   }
}'

之后，让我们插入您的数据（将您的产品类型更改为product_type）

 curl -XPOST "http://192.168.99.100:9200/catalog/products" -d'
{
    "product": {
      "ean": "abc",
      "features": {
         "product_type": "DVD player"
      },
      "color": "Black",
      "manufacturer": "Sony",
      "sitedetails": [
         {
            "name": "amazon.com",
            "sku": "zzz",
            "url": "http://www.amazon.com/dp/zzz"
         }
      ],
      "category": "Portable DVD Players"
   }
}'

现在，让我们进行查询

curl -XPOST "http://192.168.99.100:9200/catalog/products/_search" -d'
{
   "query": {
      "bool": {
         "must": [
            {
               "nested": {
                  "path": "product.features",
                  "query": {
                     "match": {
                        "product.features.product_type": "player"
                     }
                  }
               }
            },
            {
               "nested": {
                  "path": "product.sitedetails",
                  "query": {
                     "match": {
                        "product.sitedetails.sku": "zzz"
                     }
                  }
               }
            }
         ]
      }
   }
}'

响应将是：

  "hits": {
      "total": 1,
      "max_score": 1.4054651,
      "hits": [
         {
            "_index": "catalog",
            "_type": "products",
            "_id": "AVM_fcYgvVoSi3OfqPTX",
            "_score": 1.4054651,
            "_source": {
               "product": {
                  "ean": "abc",
                  "features": {
                     "Product Type": "DVD player"
                  },
                  "color": "Black",
                  "manufacturer": "Sony",
                  "sitedetails": [
                     {
                        "name": "amazon.com",
                        "sku": "zzz",
                        "url": "http://www.amazon.com/dp/zzz"
                     }
                  ],
                  "category": "Portable DVD Players"
               }
            }
         }
      ]
   }

希望有所帮助：D

Answer 2

使用：

curl 'http://localhost:9200/catalog/products/_search?q=sku:"zzz"&pretty=true'
curl 'http://localhost:9200/catalog/products/_search?q=sku:*&pretty=true'。就像我的想法一样，你想在sku中获取数据：＆＃34; zzz＆＃34;和sku：＆＃34; aaa＆＃34;。

的Referer： http://joelabrahamsson.com/elasticsearch-101/

http://www.elasticsearchtutorial.com/elasticsearch-in-5-minutes.html

如何访问elasticsearch嵌套对象

2 个答案: