![]() Multiple rules apply to a composite key, one of which is that a composite key is required to be serializable. Kotlin serialization consists of a compiler plugin, that generates visitor code for serializable classes, runtime library with core serialization API and. The kotlin language has many default classes, methods, variables, and other keywords used to implement the mobile-based. The 0.1 case is what I’m dealing with now, I need a leading number character, which Kotlin (like all languages I know of) doesn’t allow in an enum. Primary keys can be primitive (single persistent field) or composite. I use Kotlon class enums with Spring/Hibernate and 99.9 of the time they do what I want when these values are serialized into a JSON. ![]() The specification requires that fields of an entity may be Java primitives, Java serializable types, or user-defined serializable types.Īn entity class must also have a primary key. In practice, if our object is to leave the domain of the JVM, it'll require serialization.Įach entity class consists of persistent fields and properties. Serializable value class Color(val rgb: Int) Value classes are stored (and serialized) directly as their underlying type. If an entity instance is to be passed by value as a detached object (e.g., through a remote interface), the entity class must implement the Serializable interface. Just like other Kotlin classes, we just have to annotate a value class with Serializable. ![]()
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