Unable to find generic type of class... for an interface

[yukchan]

Hi,

SchemaParserBuilder throws IllegalStateException "Unable to find generic type of class ..." when it is trying to load an interface method from parent. I guess the function relativeToPotentialParent should be revised to handle the case for interface:

fun relativeToPotentialParent(declaringType: JavaType): RelativeTo {
    if(declaringType !is Class<*> || declaringType.isInterface) {
        return relativeToType(declaringType)
    }

    val type = getGenericSuperType(mostSpecificType, declaringType)
    if(type == null) {
        error("Unable to find generic type of class ${TypeUtils.toString(declaringType)} relative to ${TypeUtils.toString(mostSpecificType)}")
    } else {
        return relativeToType(type)
    }
}

Regards,
Alex

[yukchan]

https://docs.oracle.com/javase/7/docs/api/java/lang/Class.html#getGenericSuperclass()

... If this Class represents either the Object class, an interface, a primitive type, or void, then null is returned. If this object represents an array class then the Class object representing the Object class is returned.

[liangjacky]

@yukchan @oliemansm is there any workarounds for this issue? I'm running into it as well.

[oliemansm]

@liangjacky Can you share an example what you're running into exactly? Ideally a small unit test to reproduce the issue? The fix suggested in the issue is already implemented for a while, but apparently that doesn't have the desired result.

[yukchan]

I branched out locally with the change mentioned and that fixed my issues. I will try to get the latest version later though as this is already incorporated

[yukchan]

oh, sad that the other one is not yet fixed in 5.4.0
#188

[oliemansm]

@yukchan Do you already have a fix for that one available you could submit a PR for?

[oliemansm]

Fix will be available in 5.4.1.