如何在數據編織內重複多個列表

我面臨的問題是在dataweave中重複多個列表。所述dataweave的如何在數據編織內重複多個列表

輸入 - >在兩個流量可變因素（如下），

var1: [{bkAuthorID=1, bkAuthorName=abc, bookCategory=horror}, {bkAuthorID=2, bkAuthorName=xyz, bookCategory=horror}, {bkAuthorID=1, bkAuthorName=abc, bookCategory=comedy}, {bkAuthorID=2, bkAuthorName=xyz, bookCategory=Fantacy}}] var2: [{bkAuthorID=1, bkName=gjh, bkDescription=kjh},{bkAuthorID=1, bkName=sfs, bkDescription=kjh},{bkAuthorID=2, bkName=gjh, bkDescription=kjh},{bkAuthorID=2, bkName=gjh, bkDescription=kjh}]

輸出在dataweave未來 - >期望的JSON藥結構與三個列表是象下面這樣。

{ "books": [ { "bookAuthor": "abc", "bookCategorys": [ { "bookCategory": "horror", "listOfBooks": [ { "bookName": "xyz", "bookDescription":"lmn" }, { "bookName": "xyz", "bookDescription":"lmn" } ] }, { "bookCategory": "comedy", "listOfBooks": [ { "bookName": "xyz", "bookDescription":"lmn" } ] } ] }, { "bookAuthor": "xyz", "bookCategorys": [ { "bookCategory": "horror", "listOfBooks": [ { "bookName": "xyz", "bookDescription":"lmn" } ] } ] } ] }

任何人都可以幫助在這個要求這個數據網絡映射。

@Manik，你能幫我一把。

來源

2016-07-22 anusha

能否請你加什麼樣的數據是VAR1和VAR2，什麼是那些之間的關係的一些細節？另外，你正在試圖達到什麼目標（例如，按作者分組，然後是分類）？你是否得到了爲什麼合併這兩個列表的錯誤？ –

我能夠使用bkAuthorID在var1和var2之間建立關係。但是，必須有多一個關係才能確定var2中的哪本書屬於哪個類別。因此，在下面的輸出中，每個類別都將包含該作者編寫的所有書籍的列表。無論如何，您只需在'listOfBooks'一行中添加一個過濾條件即可。

Dataweave代碼：

%dw 1.0 
%output application/json 
--- 
{ 
    books:(flowVars.var1 groupBy $.bkAuthorName map using (authorId=$.bkAuthorID[0]) { 
     bookAuthor:$[0].bkAuthorName, 
     bookCategorys: $ groupBy $.bookCategory map { 
      bookCategory:$.bookCategory[0], 
      listOfBooks: flowVars.var2[?($.bkAuthorID == authorId)] map { 
       bookName:$.bkName, 
       bookDescription:$.bkDescription 
      } 
     } 
    }) 
}

輸出：

{ 
"books": [ 
{ 
    "bookAuthor": "abc", 
    "bookCategorys": [ 
    { 
     "bookCategory": "horror", 
     "listOfBooks": [ 
     { 
      "bookName": "gjh", 
      "bookDescription": "kjh" 
     }, 
     { 
      "bookName": "sfs", 
      "bookDescription": "kjh" 
     } 
     ] 
    }, 
    { 
     "bookCategory": "comedy", 
     "listOfBooks": [ 
     { 
      "bookName": "gjh", 
      "bookDescription": "kjh" 
     }, 
     { 
      "bookName": "sfs", 
      "bookDescription": "kjh" 
     } 
     ] 
    } 
    ] 
}, 
{ 
    "bookAuthor": "xyz", 
    "bookCategorys": [ 
    { 
     "bookCategory": "horror", 
     "listOfBooks": [ 
     { 
      "bookName": "gjh", 
      "bookDescription": "kjh" 
     }, 
     { 
      "bookName": "gjh", 
      "bookDescription": "kjh" 
     } 
     ] 
    }, 
    { 
     "bookCategory": "Fantacy", 
     "listOfBooks": [ 
     { 
      "bookName": "gjh", 
      "bookDescription": "kjh" 
     }, 
     { 
      "bookName": "gjh", 
      "bookDescription": "kjh" 
     } 
     ] 
    } 
    ] 
} 
] 
}

來源

2016-07-22 21:31:12 tortoise

如何在數據編織內重複多個列表

回答

相關問題