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 @Documented
@Retention(RetentionPolicy.SOURCE)
@Target({ElementType.TYPE})
@GroovyASTTransformationClass("org.codehaus.groovy.transform.SingletonASTTransformation")
public @interface Singleton Class annotation to make a singleton class. The singleton is obtained through normal property access using the singleton property (defaults to "instance").
 Such classes can be initialized during normal static initialization of the class or lazily (on first access).
 To make the singleton lazy use @Singleton(lazy=true).
 Lazy singletons are implemented with double-checked locking and a volatile backing field.
 By default, no explicit constructors are allowed. To create one or more explicit constructors
 use@Singleton(strict=false).
 This could be used to:
 
 - provide your own custom initialization logic in your own no-arg constructor - you
 will be responsible for the entire code (the @Singletonannotation becomes merely documentation)
- provide one or more constructors with arguments for a quasi-singleton - these constructors will be used
 to create instances that are independent of the singleton instance returned by the singleton property
 
 
    
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                    Element Summary
                    
                        Optional Element Summary 
                        
                            | Type | Name and Description |  
                            | boolean | lazy
 Returns:if this singleton should be lazy
 Default:false
 |  
                            | String | property
 Returns:the singleton property name
 Default:"instance"
 |  
                            | boolean | strict
 Returns:if this singleton should have strict semantics
 Default:true
 |  
 
 
 
            
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                    Inherited Methods Summary
 
 
    
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                    Element Detail
                            - 
                                public boolean lazy  - Returns:
- if this singleton should be lazy
 - Default:
- false
 
 
                            - 
                                public String property  - Returns:
- the singleton property name
 - Default:
- "instance"
 
 
                            - 
                                public boolean strict  - Returns:
- if this singleton should have strict semantics
 - Default:
- true
 
 
 
 
    
    
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