Questions tagged [kotlin-reflect]
121 questions
1
vote
0 answers
How to check if a Kotlin type (KClass) is basic (primitive), or not, at runtime (e.g. Reflection API)?
Kotlin specification states basic types as "Some types can have a special internal representation - for example, numbers, characters and booleans can be represented as primitive values at runtime". https://kotlinlang.org/docs/basic-types.html
Yet, I…
Miguel Gamboa
- 8,855
- 7
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1
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1 answer
How to find the KClass of the owner of a companion object?
I'm trying to get the class that owns a companion object so I can create loggers with inline technique inside a companion object but referencing the main class that is being logged and not the companion object.
The problem is that I can't find a way…
Polyana Fontes
- 3,156
- 1
- 27
- 41
1
vote
1 answer
Kotlin - Merge two data class
Data class
data class A(
var data: List
) {
data class Data(
var key: String,
var count: Long = 0,
var sub: List? = null
)
}
A class data values expressed in json.
[
{
"data": [
{
…
nkhcode
- 87
- 1
- 8
1
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0 answers
How can I unit test a function using the same obfuscated files as in my release build?
In my app I’ve recently updated Kotlin from 1.5.31 to 1.6.10. Since then a specific function that uses reflection (kotlin-reflect) stopped working as expected. It works perfectly fine in 1.5.31.
Now, when I run the debug build, the function works…
MatJB
- 106
- 2
- 8
1
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1 answer
Kotlin is it possible to delegate function or function parameters?
I want to have for example:
class Foo {
fun doSomething(arg1: String, arg2: String, arg3: Boolean)
}
class FooDelegate {
//different fun name
fun execute by Foo::doSomething
}
Either with reflection or other way.
What I currently have…
htafoya
- 18,261
- 11
- 80
- 104
1
vote
2 answers
Listing all the properties in a Kotlin class excluding the ones with custom getters
Is there a simple method I can use to list all of the properties in a class that don't implement a custom getter?
For example:
class Person(val name: String, val age: Int) {
val signature: String get() = "$name - $age"
val uuid =…
Andrzej Zabost
- 1,387
- 11
- 26
1
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0 answers
Why am I getting `java.lang.AssertionError: Built-in class kotlin.Any is not found` when using `copy` in TeamCity DSL?
Background
I'm trying to create some Teamcity configuration using Kotlin. I'm using a Maven in Intellij when testing the generation of the Teamcity, although I get the same result by using the command line.
Problem
A minimum example:…
MrSpaceman
- 404
- 6
- 19
1
vote
1 answer
Deserialize map of field names and values to data class based on KClass (Reflection)
I'd like to construct an object from an instance of KClass and a Map where I map fieldnames to values.
An example would be:
val testVal = mapOf("title" to "Foo", "description" to "bar")
data class Article(val title: String, val…
godzsa
- 2,105
- 4
- 34
- 56
1
vote
1 answer
Distinguish overloaded methods in Kotlin reflection
I have two methods:
class Example {
fun method(name: String): String {}
fun method(name: String, length: Int): String {}
}
And at some point in my code I need to use the second version of method via reflection, like so:
val func =…
wouldnotliketo
- 153
- 1
- 10
1
vote
1 answer
Kotlin | Find param of a function which returns a lambda using the lambda
Say I have a function haveFun which takes in a Method (from java.lang.reflect package) as a param and returns a lambda as below
typealias AnyFun = (o: Any?) -> Any?
fun haveFun(method: Method): AnyFun {
return { o -> method.invoke(o) }
}
data…
Madhu Bhat
- 13,559
- 2
- 38
- 54
1
vote
2 answers
Set property by string in Kotlin using reflection?
I have an object:
class User {
var id: String? = null
var name: String? = null
}
and list of pairs:
val fieldsToChange = listOf>(Pair("name", "foo"), Pair("id", "bar"))
I would like to iterate trough list of pairs and set…
pixel
- 24,905
- 36
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1
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1 answer
Kotlin - Performant and scalable way to get class instance property value by id or by string
I would like to make the properties of a class and it's child classes available at runtime for read and write via by integer id or by the name of the property with performance as close to that of a regular compiled read or write as feasible. There…
Dean
- 73
- 6
1
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1 answer
Compare values of common properties of objects in kotlin
I'm trying to write a method that will compare the 'common properties' (sharing the same name/type) of two objects in Kotlin. Its intended to be used in tests, for comparing 'expected' with 'actual' objects that aren't of the same type.
This is a…
Morgan
- 303
- 2
- 15
1
vote
2 answers
Reflecting the name of 'this' in a Kotlin extension function
Is there a way to get the name of 'this' in an extension function?
fun Boolean?.persist() {
if (this == null) return // Do Nothing
val nameOfVariable:String = //get the name of the variable?
// Persist variable
…
Crocodile
- 5,724
- 11
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- 67
1
vote
3 answers
Kotlin Reflection: How to know if a Kotlin class is marked with "internal" visibility modifier
I'm autogenerating code with KotlinPoet and Auto Service. I didn't find any way to know if an annotated class has "internal" modifier so I can create another class with same modifier. For example:
@MyAnnotation
internal class Car
So I thought using…
Juan Saravia
- 7,661
- 6
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