程序包 cn.taketoday.context.annotation

Annotation Interface MissingBean

@ConditionalOnMissingBean
@Retention(RUNTIME)
@Target({TYPE,METHOD})
public @interface MissingBean

Context will create a bean definition when current context were missing

从以下版本开始:

2019-01-31 14:36

作者:

Harry Yang

可选元素概要

可选元素

修饰符和类型	可选元素	说明
Class<? extends Annotation>[]	annotation	The annotation type decorating a bean that should be checked.
Class<?>[]	ignored	The class types of beans that should be ignored when identifying matching beans.
String[]	ignoredType	The class type names of beans that should be ignored when identifying matching beans.
String[]	name	Missing bean name
Class<?>[]	parameterizedContainer	Additional classes that may contain the specified bean types within their generic parameters.
SearchStrategy	search	Strategy to decide if the application context hierarchy (parent contexts) should be considered.
String[]	type	The class type names of beans that should be checked.
Class<?>[]	value	The class types of beans that should be checked.

元素详细资料

value

@AliasFor(annotation=ConditionalOnMissingBean.class,
          attribute="value")
Class<?>[] value

The class types of beans that should be checked. The condition matches when no bean of each class specified is contained in the BeanFactory.

返回:

the class types of beans to check

默认值:

{}

name

@AliasFor(annotation=ConditionalOnMissingBean.class,
          attribute="name")
String[] name

Missing bean name

this attr determine the bean definition

when its declare on a method default bean name is method-name

默认值:

{}

type

@AliasFor(annotation=ConditionalOnMissingBean.class,
          attribute="type")
String[] type

The class type names of beans that should be checked. The condition matches when no bean of each class specified is contained in the BeanFactory.

返回:

the class type names of beans to check

默认值:

{}

ignored

@AliasFor(annotation=ConditionalOnMissingBean.class,
          attribute="ignored")
Class<?>[] ignored

The class types of beans that should be ignored when identifying matching beans.

返回:

the class types of beans to ignore

默认值:

{}

ignoredType

@AliasFor(annotation=ConditionalOnMissingBean.class,
          attribute="ignoredType")
String[] ignoredType

The class type names of beans that should be ignored when identifying matching beans.

返回:

the class type names of beans to ignore

默认值:

{}

annotation

@AliasFor(annotation=ConditionalOnMissingBean.class,
          attribute="annotation")
Class<? extends Annotation>[] annotation

The annotation type decorating a bean that should be checked. The condition matches when each annotation specified is missing from all beans in the BeanFactory.

返回:

the class-level annotation types to check

默认值:

{}

search

@AliasFor(annotation=ConditionalOnMissingBean.class,
          attribute="search")
SearchStrategy search

Strategy to decide if the application context hierarchy (parent contexts) should be considered.

返回:

the search strategy

默认值:

ALL

parameterizedContainer

@AliasFor(annotation=ConditionalOnMissingBean.class,
          attribute="parameterizedContainer")
Class<?>[] parameterizedContainer

Additional classes that may contain the specified bean types within their generic parameters. For example, an annotation declaring value=Name.class and parameterizedContainer=NameRegistration.class would detect both Name and NameRegistration<Name>.

返回:

the container types

默认值:

{}