groovy.lang
Annotation Type Singleton

java.lang.Object
  groovy.lang.Singleton

@Retention(RetentionPolicy.SOURCE)
@Target({ElementType.TYPE})
@GroovyASTTransformationClass("org.codehaus.groovy.transform.SingletonASTTransformation")
@interface Singleton

Class annotation to make class singleton. Singleton can be initialized in static initialization of the class or lazily (on first access) To make singleton lazy it is enough to use @Singleton(lazy=true) Lazy singletons implemented with double check locking and volatile field

author:

Alex Tkachman

lazy

boolean lazy

return:

if this singleton should be lazy

default:

false

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