In Kotlin, how can I work around the inherited declarations clash when an enum class implements an interface?

问题:

I define an enum class that implements Neo4j's RelationshipType:

enum class MyRelationshipType : RelationshipType {     // ... } 

I get the following error:

Inherited platform declarations clash: The following declarations have the same JVM signature (name()Ljava/lang/String;): fun <get-name>(): String fun name(): String

I understand that both the name() method from the Enum class and the name() method from the RelationshipType interface have the same signature. This is not a problem in Java though, so why is it an error in Kotlin, and how can I work around it?

回答1:

it is a

kotlin bug-KT-14115 even if you makes the enum class implements the interface which contains a name() function is denied.

interface Name {     fun name(): String; }   enum class Color : Name;        //   ^--- the same error reported 

BUT you can simulate a enum class by using a sealed class, for example:

interface Name {     fun name(): String; }   sealed class Color(val ordinal: Int) : Name {     fun ordinal()=ordinal;     override fun name(): String {         return this.javaClass.simpleName;     }     //todo: simulate other methods ... };  object RED : Color(0); object GREEN : Color(1); object BLUE : Color(2); 

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