Package groovy.transform

Annotation Type ImmutableOptions

@Documented
@Retention(SOURCE)
@Target(TYPE)
public @interface ImmutableOptions

Class annotation used to assist in the creation of immutable classes. Defines any known immutable properties (or fields) or known immutable classes.

Since:

2.5.0

See Also:

Immutable, ImmutablePropertyHandler

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
Class[]	knownImmutableClasses	Allows you to provide @Immutable with a list of classes which are deemed immutable.
String[]	knownImmutables	Allows you to provide @Immutable with a list of property names which are deemed immutable.

Element Details

knownImmutableClasses

Class[] knownImmutableClasses

Allows you to provide @Immutable with a list of classes which are deemed immutable. By supplying a class in this list, you are vouching for its immutability and @Immutable will do no further checks. Example:

 import groovy.transform.*
 @Immutable(knownImmutableClasses = [Address])
 class Person {
     String first, last
     Address address
 }

 @TupleConstructor
 class Address {
     final String street
 }
 

Default:

{}

knownImmutables

String[] knownImmutables

Allows you to provide @Immutable with a list of property names which are deemed immutable. By supplying a property's name in this list, you are vouching for its immutability and @Immutable will do no further checks. Example:

 @groovy.transform.Immutable(knownImmutables = ['address'])
 class Person {
     String first, last
     Address address
 }
 ...
 

Default:

{}