org.springframework.context.annotation

Annotation Type Scope

@Target(value={TYPE,METHOD})
 @Retention(value=RUNTIME)
 @Documented
public @interface Scope

When used as a type-level annotation in conjunction with @Component, @Scope indicates the name of a scope to use for instances of the annotated type.

When used as a method-level annotation in conjunction with @Bean, @Scope indicates the name of a scope to use for the instance returned from the method.

NOTE: @Scope annotations are only introspected on the concrete bean class (for annotated components) or the factory method (for @Bean methods). In contrast to XML bean definitions, there is no notion of bean definition inheritance, and inheritance hierarchies at the class level are irrelevant for metadata purposes.

In this context, scope means the lifecycle of an instance, such as singleton, prototype, and so forth. Scopes provided out of the box in Spring may be referred to using the SCOPE_* constants available in the ConfigurableBeanFactory and WebApplicationContext interfaces.

To register additional custom scopes, see CustomScopeConfigurer.

Since:

2.5

Author:

Mark Fisher, Chris Beams, Sam Brannen

See Also:

Component, Bean

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element and Description
ScopedProxyMode	proxyMode Specifies whether a component should be configured as a scoped proxy and if so, whether the proxy should be interface-based or subclass-based.
String	scopeName Specifies the name of the scope to use for the annotated component/bean.
String	value Alias for scopeName().

Element Detail

value

@AliasFor(value="scopeName")
public abstract String value

Alias for scopeName().

See Also:

scopeName()

Default:

""

scopeName

@AliasFor(value="value")
public abstract String scopeName

Specifies the name of the scope to use for the annotated component/bean.

Defaults to an empty string ("") which implies SCOPE_SINGLETON.

Since:

4.2

See Also:

ConfigurableBeanFactory.SCOPE_PROTOTYPE, ConfigurableBeanFactory.SCOPE_SINGLETON, WebApplicationContext.SCOPE_REQUEST, WebApplicationContext.SCOPE_SESSION, value()

Default:

""

proxyMode

public abstract ScopedProxyMode proxyMode

Specifies whether a component should be configured as a scoped proxy and if so, whether the proxy should be interface-based or subclass-based.

Defaults to ScopedProxyMode.DEFAULT, which typically indicates that no scoped proxy should be created unless a different default has been configured at the component-scan instruction level.

Analogous to <aop:scoped-proxy/> support in Spring XML.

See Also:

ScopedProxyMode

Default:

org.springframework.context.annotation.ScopedProxyMode.DEFAULT