I have a method that accepts java.lang.reflect.Met...

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[wjur]

I have a method that accepts java.lang.reflect.Method and I'm trying to check whether the method is returning a nullable type or not (via 'kotlinFunction.returnType.isMarkedNullable').

However, for data classes, there are the componentX() methods and the corresponding getter methods, getXXX(). Interestingly for getter functions there is no kotlinFunction.

[diesieben07]

wjur: Kotlin does not really see those as functions, they are part of the property. So they are a KProperty, not a KFunction.

[wjur]

I see. Anyway I need to link a getter with a property 😞

[wjur]

I'm writing a module for jackson.

[wjur]

The JsonProperty annotation has a required property, which defaults to false.

[diesieben07]

Not sure I am following you, what do you mean by "link"?

[wjur]

In Kotlin and data classes, this makes a little sense, because it is isMarkedNullable that defines whether the property is required or not.

[wjur]

Consider a sample json model:

[wjur]

data class Model(
    @JsonProperty("name")
    val name: String
)

[wjur]

The property says that name is an optional field

[wjur]

while the field is required because is of a non nullable type

[diesieben07]

Ok, so, you want to go from the java.lang.reflect.Method for the getter to the corresponding KProperty?

[wjur]

Yes

[diesieben07]

Since there is only a way to go from Kotlin reflection to Java reflection you have to get all the properties in the class and search through them until property.getter.javaMethod == yourMethod

[wjur]

It's working!

[wjur]

You saved The World!

[wjur]

Thank you so much!