課程demo

###### Cookie Service

##索引資料，dynamic mapping 會不斷加入新增欄位
PUT cookie_service/_doc/1
{
 "url":"www.google.com",
 "cookies":{
   "username":"tom",
   "age":32
 }
}

PUT cookie_service/_doc/2
{
 "url":"www.amazon.com",
 "cookies":{
   "login":"2019-01-01",
   
 
"email":"[email protected]"
 }
}


DELETE cookie_service
#使用 Nested 物件，增加key/value
PUT cookie_service
{
  "mappings": {
    "properties": {
      "cookies": {
        "type": "nested",
        "properties": {
          "name": {
            "type": "keyword"
          },
          "dateValue": {
            
 
"type": "date"
          },
          "keywordValue": {
            "type": "keyword"
          },
          "IntValue": {
            "type": "integer"
          }
        }
      },
      "url": {
        "type": "text",
        "fields": {
          "keyword": {
            "type": "keyword",
            
 
"ignore_above": 256
          }
        }
      }
    }
  }
}


##寫入資料，使用key和合適型別的value欄位
PUT cookie_service/_doc/1
{
 "url":"www.google.com",
 "cookies":[
    {
      "name":"username",
      "keywordValue":"tom"
    },
    {
       "name":"age",
      "intValue":32

    }

   ]
 }


PUT cookie_service/_doc/2
{
 "url":"www.amazon.com",
 "cookies":[
    {
      "name":"login",
      "dateValue":"2019-01-01"
    },
    {
       "name":"email",
      "IntValue":32

    }

   ]
 }


# Nested 查詢，通過bool查詢進行過濾
POST cookie_service/_search
{
  "query": {
    "nested": {
      "path": "cookies",
      "query": {
        "bool": {
          "filter": [
            {
            "term": {
              "cookies.name": "age"
            }},
            {
              "range":{
                "cookies.intValue":{
                  "gte":30
                }
              }
            }
          ]
        }
      }
    }
  }
}



# 在Mapping中加入元資訊，便於管理
PUT softwares/
{
  "mappings": {
    "_meta": {
      "software_version_mapping": "1.0"
    }
  }
}

GET softwares/_mapping
PUT softwares/_doc/1
{
  "software_version":"7.1.0"
}

DELETE softwares
# 優化,使用inner object
PUT softwares/
{
  "mappings": {
    "_meta": {
      "software_version_mapping": "1.1"
    },
    "properties": {
      "version": {
        "properties": {
          "display_name": {
            "type": "keyword"
          },
          "hot_fix": {
            "type": "byte"
          },
          "marjor": {
            "type": "byte"
          },
          "minor": {
            "type": "byte"
          }
        }
      }
    }
  }
}


#通過 Inner Object 寫入多個文件
PUT softwares/_doc/1
{
  "version":{
  "display_name":"7.1.0",
  "marjor":7,
  "minor":1,
  "hot_fix":0  
  }

}

PUT softwares/_doc/2
{
  "version":{
  "display_name":"7.2.0",
  "marjor":7,
  "minor":2,
  "hot_fix":0  
  }
}

PUT softwares/_doc/3
{
  "version":{
  "display_name":"7.2.1",
  "marjor":7,
  "minor":2,
  "hot_fix":1  
  }
}


# 通過 bool 查詢，
POST softwares/_search
{
  "query": {
    "bool": {
      "filter": [
        {
          "match":{
            "version.marjor":7
          }
        },
        {
          "match":{
            "version.minor":2
          }
        }

      ]
    }
  }
}




# Not Null 解決聚合的問題
DELETE ratings
PUT ratings
{
  "mappings": {
      "properties": {
        "rating": {
          "type": "float",
          "null_value": 1.0
        }
      }
    }
}


PUT ratings/_doc/1
{
 "rating":5
}
PUT ratings/_doc/2
{
 "rating":null
}


POST ratings/_search
POST ratings/_search
{
  "size": 0,
  "aggs": {
    "avg": {
      "avg": {
        "field": "rating"
      }
    }
  }
}

POST ratings/_search
{
  "query": {
    "term": {
      "rating": {
        "value": 1
      }
    }
  }
}