Question

我正在使用Realm库开发iOS应用，效果很好。
但是，当我尝试保存一个模型时，会引发如下错误。

由于未捕获的异常“ RLMException”而终止应用程序，原因： “目标表行索引超出范围

这里是代码。

....
do {
    try realm?.write {
        let newPatientImage = PatientImage()
        newPatientImage.path = imageName
        if let flap = flap {
            newPatientImage.setStronglyTypedFlap(flap)
        }
        newPatientImage.hasPhoto = hasPhoto
        newPatientImage.flap?.flapLocationRaw = flapLocation.rawValue
        newPatientImage.id = newPatientImage.incrementalID()
            patient.patientImages.append(newPatientImage)
            realm?.add(newPatientImage)
            realm?.add(patient, update: true)
    }
} catch {

}
...

这里是newPatientImage对象。

PatientImage {
    id = 22;
    hasPhoto = 0;
    isPostOp = 0;
    path = 4426699712;
    date = 2019-04-26 11:32:15 +0000;
    flap = RhomboidAFlap {
        id = 1;
        name = Rhomboid A;
        adjustables = List<Adjustable> <0x280b5c120> (
            [0] Adjustable {
                value = 60;
                defaultValue = 60;
                name = A;
                isDegrees = 1;
            },
            [1] Adjustable {
                value = 60;
                defaultValue = 60;
                name = B;
                isDegrees = 1;
            },
            [2] Adjustable {
                value = 200;
                defaultValue = 200;
                name = C;
                isDegrees = 0;
            },
            [3] Adjustable {
                value = 200;
                defaultValue = 200;
                name = E;
                isDegrees = 0;
            }
        );
        a = 0.6491648060943035;
        b = 0;
        c = 0;
        d = 0.6491648060943035;
        tx = -195.6666717529297;
        ty = -144.5;
        xOffset = -44.99840983089462;
        yOffset = 30.7939660691552;
        width = 650;
        height = 1000;
        centerX = 429.5;
        centerY = 499.9999999999999;
        calibrationSettings = CalibrationSettings {
            measurementUnitRaw = px;
            conversionRatio = 1;
            measuredLength = 0;
            startX = 0;
            startY = 0;
            endX = 0;
            endY = 0;
        };
        flapLocationRaw = ;
    };
    ohPlastyFlap = (null);
    curvelinearFlap = (null);
    rhomboidAFlap = RhomboidAFlap {
        id = 1;
        name = Rhomboid A;
        adjustables = List<Adjustable> <0x280b5c120> (
            [0] Adjustable {
                value = 60;
                defaultValue = 60;
                name = A;
                isDegrees = 1;
            },
            [1] Adjustable {
                value = 60;
                defaultValue = 60;
                name = B;
                isDegrees = 1;
            },
            [2] Adjustable {
                value = 200;
                defaultValue = 200;
                name = C;
                isDegrees = 0;
            },
            [3] Adjustable {
                value = 200;
                defaultValue = 200;
                name = E;
                isDegrees = 0;
            }
        );
        a = 0.6491648060943035;
        b = 0;
        c = 0;
        d = 0.6491648060943035;
        tx = -195.6666717529297;
        ty = -144.5;
        xOffset = -44.99840983089462;
        yOffset = 30.7939660691552;
        width = 650;
        height = 1000;
        centerX = 429.5;
        centerY = 499.9999999999999;
        calibrationSettings = CalibrationSettings {
            measurementUnitRaw = px;
            conversionRatio = 1;
            measuredLength = 0;
            startX = 0;
            startY = 0;
            endX = 0;
            endY = 0;
        };
        flapLocationRaw = ;
    };
    rhomboidBFlap = (null);
    noteFlap = (null);
    vyPlastyFlap = (null);
    bilobedFlap = (null);
    circularZFlap = (null);
    atPlastyFlap = (null);
    ouPlastyAFlap = (null);
    ouPlastyBFlap = (null);
    simpleEllipseFlap = (null);
}

这是耐心的对象。

    Patient {
    id = 1;
    firstName = Gg;
    lastName = ;
    email = ;
    phone = ;
    address1 = ;
    address2 = ;
    city = ;
    state = ;
    dateOfBirth = 2019-04-03 21:24:28 +0000;
    medicalRedcordNumber = ;
    imageUrl = avatar_1;
    patientImages = List<PatientImage> <0x2834a5200> (
        [0] PatientImage {
            id = 1;
            hasPhoto = 1;
            isPostOp = 0;
            path = 4489901936;
            date = 2019-04-08 16:21:54 +0000;
            flap = (null);
            ohPlastyFlap = (null);
            curvelinearFlap = (null);
            rhomboidAFlap = (null);
            rhomboidBFlap = (null);
            noteFlap = (null);
            vyPlastyFlap = (null);
            bilobedFlap = (null);
            circularZFlap = (null);
            atPlastyFlap = (null);
            ouPlastyAFlap = (null);
            ouPlastyBFlap = (null);
            simpleEllipseFlap = (null);
        }
}

任何人都可以帮助我解决此问题吗？在更新iOS版本和Realm版本之前不会发生此问题。

谢谢。

Answer 1

这是因为每个Flap类（如ohPlastyFlap，curvelinearFlap ...）都会覆盖Flap类，而Realm无法识别Flap类型。

我通过正确设置襟翼类型来修复它。

Answer 2

您需要像这样在写事务中操作领域：

open System

open LiteDB
open LiteDB.FSharp

[<StructuredFormatDisplay("Article #{Id}: {Name}")>]
type Article( Id: int, Name: string) as self =
    let fullName  = (string Id) + " " + Name
    member val Id = Id //Read Only
    member val Name = Name with get, set //Mutable
    //[<BsonIgnore>]
    member this.FullName with get() = fullName 
    //[<BsonIgnore>]
    member this.FullName2 = (string Id) + " " + Name

[<EntryPoint>]
let main argv =

    let mapper = FSharpBsonMapper()
    use db = new LiteDatabase("simple.db", mapper)

    let articles = db.GetCollection<Article>("articles")
    let id = BsonValue(2)

    // Insert
    let art2 = new Article(2, "First Name")
    printfn "%A" art2
    printfn "fn: %s" art2.FullName
    articles.Insert(art2) |> ignore
    printfn "==="


    // Find
    let result = articles.FindById(id)
    printfn "%A" result
    printfn "fn: %s" result.FullName
    printfn "==="

    // Modify
    result.Name <- "New Name"
    printfn "%A" result
    printfn "fn: %s" result.FullName //<- No Modified!
    printfn "fn2: %s" result.FullName2 //<- No Modified!
    printfn "==="

    // Update Modified Changes
    articles.Update(result) |> ignore
    let result = articles.FindById(id)
    // printfn "%%O %O" result //.ToString()
    printfn "%A" result 
    printfn "fn: %s" result.FullName


    0 // return an integer exit code

Answer 3

“患者”对象缺少相应的初始化，仍然为零。

之前

patient.patientImages.append(newPatientImage)

尝试为“患者”创建。

尝试添加和保存对象时，Realm引发错误

3 个答案: