io.micronaut.inject

Interface BeanDefinitionReference<T>

Type Parameters:

T - The bean type

All Superinterfaces:

AnnotationMetadataProvider, AnnotationSource, BeanContextConditional, BeanType<T>

All Known Implementing Classes:

AbstractBeanDefinitionReference

@Internal
public interface BeanDefinitionReference<T>
extends BeanType<T>

A bean definition reference provides a reference to a BeanDefinition thus allowing for soft loading of bean definitions without loading the actual types.

This interface implements AnnotationMetadataProvider thus allowing the bean metadata to be introspected safely without loading the class or the annotations themselves.

The actual bean will be loaded upon calling the load() method. Note that consumers of this interface should call isPresent() prior to loading to ensure an error does not occur

The class can also decide whether to abort loading the definition by returning null

This interface extends the BeanType interface which is shared between BeanDefinition and this type. In addition a reference can be enabled or disabled (see BeanContextConditional.isEnabled(BeanContext))

Since:

1.0

Author:

Graeme Rocher

See Also:

BeanType, BeanDefinition, BeanContextConditional

Field Summary

Fields inherited from interface io.micronaut.core.annotation.AnnotationSource

EMPTY

Method Summary

Modifier and Type	Method and Description
String	getBeanDefinitionName()
boolean	isContextScope()
boolean	isPresent()
BeanDefinition<T>	load() Loads the bean definition.
BeanDefinition<T>	load(BeanContext context) Loads the bean definition for the current BeanContext.

Methods inherited from interface io.micronaut.inject.BeanType

getBeanType, getName, isPrimary, requiresMethodProcessing

Methods inherited from interface io.micronaut.core.annotation.AnnotationMetadataProvider

findAnnotation, findAnnotation, findDeclaredAnnotation, findDeclaredAnnotation, getAnnotationMetadata, isAnnotationPresent, isDeclaredAnnotationPresent, synthesize, synthesizeAll, synthesizeAnnotationsByType, synthesizeDeclared, synthesizeDeclared, synthesizeDeclaredAnnotationsByType

Methods inherited from interface io.micronaut.core.annotation.AnnotationSource

getAnnotation, getAnnotation, getDeclaredAnnotation, getDeclaredAnnotation

Methods inherited from interface io.micronaut.inject.BeanContextConditional

isEnabled

Method Detail

getBeanDefinitionName

String getBeanDefinitionName()

Returns:

The class name of the backing BeanDefinition

load

BeanDefinition<T> load()

Loads the bean definition.

Returns:

The loaded component definition or null if it shouldn't be loaded

load

BeanDefinition<T> load(BeanContext context)

Loads the bean definition for the current BeanContext.

Parameters:

context - The bean context

Returns:

The loaded bean definition or null if it shouldn't be loaded

isContextScope

boolean isContextScope()

Returns:

Is this class context scope

isPresent

boolean isPresent()

Returns:

Is the underlying bean type present on the classpath