io.objectbox.annotation

Annotation Type Id

@Retention(value=CLASS)
 @Target(value=FIELD)
public @interface Id

Marks the ID property of an @Entity. The property must be of type long (or Long in Kotlin) and have not-private visibility (or a not-private getter and setter method).

ID properties are unique and indexed by default.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
boolean	assignable Allows IDs of new entities to be assigned manually.

Element Detail

assignable

public abstract boolean assignable

Allows IDs of new entities to be assigned manually. Warning: This has side effects, check the online documentation on self-assigned object IDs for details.

This may allow re-use of IDs assigned elsewhere, e.g. by a server.

Default:

false