如何訪問彈性搜索嵌套對象

Question

我試圖讓我的頭纏住嵌套查詢，但我無法得到這個工作。 我在ES 2項看起來像這樣

{ 
"_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個問題：

什麼是捲曲得到SKU = ZZZ？

在搜索「玩家」時得到兩個項目的捲曲是什麼？

tnx！

Answer 1

Heyy bro，讓我們做魔術。 首先，你需要包括你的嵌套對象的映射，這樣

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

之後，讓我們將您的數據（更改您的產品類型到產品類型）

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" 
    } 
}' 

現在，讓我們做查詢

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" 
        } 
        } 
       } 
      } 
     ] 
     } 
    } 
}' 

和響應將是：

"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" 
       } 
      } 
     } 
     ] 
    } 

希望它能幫助：d

Answer 2

用途：

1. curl 'http://localhost:9200/catalog/products/_search?q=sku:"zzz"&pretty=true'
2. curl 'http://localhost:9200/catalog/products/_search?q=sku:*&pretty=true'。就像我的想法一樣，你想要在sku中獲取數據：「zzz」和sku：「aaa」。

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

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