![]() But since the type information is accessible only in runtime, compiler wonât be able to use it. You can get java class from string using Class.forName (.) method and then use Java Class::cast (documentation here) to perform safe cast. ![]() In a transaction, you can add the object to the realm if the realms schema includes the object. It is possible to cast an object to a type derived from its name at runtime. In other words, weâve declared the three variables in the raw type.įor simplicity, weâll use unit test assertions to verify if we get the expected type. Instantiate Realm objects as you would any other object. Itâs worth mentioning that Kotlinâs Any is pretty similar to Javaâs Object, which means itâs the supertype of all other classes. We should note that weâve declared the three variables using the same type: Any. Learn what to look out for when using ObjectBox with Kotlin, how to use the built-in Kotlin extension functions. As always, code snippets can be found over on over on GitHub. Companion objects then take this even further, allowing for cleaner code that is easier to maintain and work with. Private val myPlayer: Any = Player("Jackson", 42, 100)Īs we can see, weâve created three variables: one Int, one String, and one Player. Kotlin Support ObjectBox fully supports Kotlin for Android. Objects in Kotlin add a whole extra layer that we can use, further streamlining our code and making it easier to develop. Private val myString: Any = "I am a string" Next, letâs create some variables: private val myInt: Any = 42 It differs to Javaâs Object in 2 main things: In Java, primitives types arenât type of the hierarchy and you need to box them implicitly, while in Kotlin Any is a super type of all types. Implementations must fulfil the following requirements: open operator fun equals(other: Any): Boolean Common JVM JS Native 1.0 hashCode Returns a hash code value for the object. () Functions Common JVM JS Native 1.0 equals Indicates whether some other object is 'equal to' this one.![]() Moreover, the Player class inherits the Person class and implements the Ranking interface. In Kotlin the Any type represents the super type of all non-nullable types. Every Kotlin class has Any as a superclass. Open class Person(val name: String, val age: Int)Ĭlass Player(name: String, age: Int, val numberOfWins: Int) : Person(name, age), RankingĪs the code above shows, in the package, weâve defined a Person class, a Ranking interface, and a Player class. ![]()
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