核心數據謂詞SQL無法解析

我一直在敲我的腦袋，讓我的過濾語句正常工作。我嘗試了一堆東西（正如你在我的評論代碼中看到的那樣）。我試圖做的是在用戶輸入時進行搜索 - 搜索customerObject.firstName，customerObject.lastName和標題 - 如果短語在其中任何一箇中顯示這些結果。 .lastName和.firstName是customerObject的屬性。核心數據謂詞SQL無法解析

class func searchContainsPredicateEstimateInvoice(searchString: String, existingPredicate: NSPredicate? = nil) -> NSPredicate 
    { 
     var words = searchString.componentsSeparatedByString(" ") 
     var predicateList = [NSPredicate]() 
     for word in words 
     { 
      if count(word) > 0 
      { 
       var str = NSString(format: "SUBQUERY(%@, $f, $f.%@ CONTAINS[cd] %@) OR SUBQUERY(%@, $l, $l.%@ CONTAINS[cd] %@) OR (%@ CONTAINS[cd] %@)", "\(CUSTOMER_OBJECT_KEY)","\(USER_FIRST_NAME_LOCAL_KEY)" ,word, "\(CUSTOMER_OBJECT_KEY)", "\(USER_LAST_NAME_LOCAL_KEY)", word, ESTIMATE_NAME_KEY, word) 
       println(str) 
       var pred = NSPredicate(format: "SUBQUERY(%@, $f, $f.%@ CONTAINS[cd] %@) OR SUBQUERY(%@, $l, $l.%@ CONTAINS[cd] %@) OR (%@ CONTAINS[cd] %@)", "\(CUSTOMER_OBJECT_KEY)","\(USER_FIRST_NAME_LOCAL_KEY)" ,word, "\(CUSTOMER_OBJECT_KEY)", "\(USER_LAST_NAME_LOCAL_KEY)", word, ESTIMATE_NAME_KEY, word) 

       //var pred = NSPredicate(format: "SUBQUERY(customerObject, $f, $f.firstName CONTAINS[cd] W)[email protected] > 0") 
       //var pred = NSPredicate(format: "SUBQUERY(customerObject, $g, $g.firstName CONTAINS[cd] %@)[email protected] > 0", word) 
       //var str = NSString(format: "SUBQUERY(%@, $f, $f.%@ CONTAINS[cd] %@) OR SUBQUERY(%@, $l, $l.%@ CONTAINS[cd] %@) OR (%@ CONTAINS[cd] %@)", "\(CUSTOMER_OBJECT_KEY)","\(USER_FIRST_NAME_LOCAL_KEY)" ,word, "\(CUSTOMER_OBJECT_KEY)", "\(USER_LAST_NAME_LOCAL_KEY)", word, ESTIMATE_NAME_KEY, word) 
       predicateList.append(pred) 
      } 
     } 

     if existingPredicate != nil 
     { 
      predicateList.append(existingPredicate!) 
     } 

     return NSCompoundPredicate(type: .AndPredicateType, subpredicates: predicateList) 

    } 
    //var pred = NSPredicate(format: "SUBQUERY(%K, $f, $f.%K CONTAINS[cd] %@) OR SUBQUERY(%K, $l, $l.%K CONTAINS[cd] %@) OR (%K CONTAINS[cd] %@)", "\(CUSTOMER_OBJECT_KEY)","\(USER_FIRST_NAME_LOCAL_KEY)" ,word, "\(CUSTOMER_OBJECT_KEY)", "\(USER_LAST_NAME_LOCAL_KEY)", word, ESTIMATE_NAME_KEY, word)

這是對日誌顯示的內容與實際值：

SUBQUERY(customerObject, $f, $f.firstName CONTAINS[cd] W) OR SUBQUERY(customerObject, $l, $l.lastName CONTAINS[cd] W) OR (name CONTAINS[cd] W)

數據模型： enter image description here

來源

2015-04-29 Spentak

「customerObject」是否是您實體中的關係？一對一還是多對一？核心數據模型的屏幕截圖可能很有用。 –

沒有意識到查詢的關係。所以是的 - customerObject是一個不同的核心數據實體，一個估計有一個引用。 – Spentak

，我們在您謂語創作一些問題：

SUBQUERY僅用於與多對多關係（甚至是然後不總是需要）。
從不使用NSString(format:)來創建謂詞。字符串格式字符串和謂詞格式字符串之間的轉義和引用規則太不同了。
使用%K進行關鍵路徑替換，而不是%@。因此

謂詞應該類似

let pred = NSPredicate(format: "%K.%K CONTAINS[c] %@ OR %K.%K CONTAINS[c] %@", 
    CUSTOMER_OBJECT_KEY, USER_FIRST_NAME_LOCAL_KEY, word, 
    CUSTOMER_OBJECT_KEY, USER_LAST_NAME_LOCAL_KEY, word)

假設CUSTOMER_OBJECT_KEY是對一的關係，和USER_FIRST_NAME_LOCAL_KEY/USER_LAST_NAME_LOCAL_KEY的名稱是屬性的目標實體的。

來源

2015-04-29 19:05:01

這樣做：'''let pred = NSPredicate（format：「％K.％K CONTAINS [c]％@ OR％K.％K CONTAINS [c]％@ OR％K CONTAINS [c]％@ ，CUSTOMER_OBJECT_KEY，USER_LAST_NAME_LOCAL_KEY，單詞，CUSTOMER_OBJECT_KEY，USER_FIRST_NAME_LOCAL_KEY，單詞，ESTIMATE_NAME_KEY，單詞）''' – Spentak

核心數據謂詞SQL無法解析

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