[英]Cannot bind a nullable property with tornadofx viewmodel
I'm trying to bind a nullable property (String?) from my domain model to a tornadofx view model.我正在尝试将域模型中的可为空属性(字符串?)绑定到 tornadofx 视图模型。 But I get a compiler error.但是我收到编译器错误。 The nullable properties are: idCard, phone, and discharge可为空的属性有:idCard、phone 和放电
My code:我的代码:
class Patient(id: EntityID<Int>) : IntEntity(id) {
companion object : IntEntityClass<Patient>(Patients)
var patientId: Int by Patients.patientId
var name: String by Patients.name
var lastName: String by Patients.lastName
var recordNumber: Int by Patients.recordNumber
var idCard: String? by Patients.idCard
var phone: String? by Patients.phone
var age: Int by Patients.age
var gender: Char by Patients.gender
var admission: DateTime by Patients.admission
var discharge: DateTime? by Patients.discharge
var specialty: String by Patients.specialty
}
class PatientViewModel(patient: Patient) : ViewModel() {
val patientId = bind { patient.observable(Patient::patientId) }
val name = bind { patient.observable(Patient::name)}
val lastName = bind { patient.observable(Patient::lastName) }
val recordNumber = bind { patient.observable(Patient::recordNumber) }
val idCard = bind { patient.observable(Patient::idCard) }
val phone = bind { patient.observable(Patient::phone)}
val age = bind { patient.observable(Patient::age) }
val gender = bind { patient.observable(Patient::gender) }
val admission = bind { patient.observable(Patient::admission) }
val discharge = bind { patient.observable(Patient::discharge) }
val specialty = bind { patient.observable(Patient::specialty) }
}
Compiler error:编译器错误:
e: D:\projects\manager\src\main\kotlin\manager\model\Patient.kt: (49, 18): Type inference failed: Cannot infer type parameter T in inline fun <reified PropertyType : Property<T>, reified T : Any, ResultType : PropertyType> bind(autocommit: Boolean = ..., forceObjectProperty: Boolean = ..., defaultValue: T? = ..., noinline propertyProducer: () -> PropertyType?): ResultType
None of the following substitutions
(Boolean,Boolean,String?,() -> Property<String?>?)
(Boolean,Boolean,Any?,() -> Property<String?>?)
can be applied to
(() -> ObjectProperty<String?>)
尝试使用您的模型绑定执行此操作:
val patientId = bind(Patient::patientId)
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