org.springframework.context.annotation

Class Jsr330ScopeMetadataResolver

java.lang.Object

org.springframework.context.annotation.Jsr330ScopeMetadataResolver

All Implemented Interfaces:

ScopeMetadataResolver

public class Jsr330ScopeMetadataResolver
extends Object
implements ScopeMetadataResolver

Simple ScopeMetadataResolver implementation that follows JSR-330 scoping rules: defaulting to prototype scope unless Singleton is present.

This scope resolver can be used with ClassPathBeanDefinitionScanner and AnnotatedBeanDefinitionReader for standard JSR-330 compliance. However, in practice, you will typically use Spring's rich default scoping instead - or extend this resolver with custom scoping annotations that point to extended Spring scopes.

Since:

3.0

Author:

Juergen Hoeller

See Also:

registerScope(java.lang.Class<?>, java.lang.String), resolveScopeName(java.lang.String), ClassPathBeanDefinitionScanner.setScopeMetadataResolver(org.springframework.context.annotation.ScopeMetadataResolver), AnnotatedBeanDefinitionReader.setScopeMetadataResolver(org.springframework.context.annotation.ScopeMetadataResolver)

Constructor Summary

Constructors

Constructor and Description
Jsr330ScopeMetadataResolver()

Method Summary

Modifier and Type	Method and Description
void	registerScope(Class<?> annotationType, String scopeName) Register an extended JSR-330 scope annotation, mapping it onto a specific Spring scope by name.
void	registerScope(String annotationType, String scopeName) Register an extended JSR-330 scope annotation, mapping it onto a specific Spring scope by name.
ScopeMetadata	resolveScopeMetadata(BeanDefinition definition) Resolve the ScopeMetadata appropriate to the supplied bean definition.
protected String	resolveScopeName(String annotationType) Resolve the given annotation type into a named Spring scope.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Jsr330ScopeMetadataResolver

public Jsr330ScopeMetadataResolver()

Method Detail

registerScope

public final void registerScope(Class<?> annotationType,
                                String scopeName)

Register an extended JSR-330 scope annotation, mapping it onto a specific Spring scope by name.

Parameters:

annotationType - the JSR-330 annotation type as a Class

scopeName - the Spring scope name

registerScope

public final void registerScope(String annotationType,
                                String scopeName)

Register an extended JSR-330 scope annotation, mapping it onto a specific Spring scope by name.

Parameters:

annotationType - the JSR-330 annotation type by name

scopeName - the Spring scope name

resolveScopeName

@Nullable
protected String resolveScopeName(String annotationType)

Resolve the given annotation type into a named Spring scope.

The default implementation simply checks against registered scopes. Can be overridden for custom mapping rules, e.g. naming conventions.

Parameters:

annotationType - the JSR-330 annotation type

Returns:

the Spring scope name

resolveScopeMetadata

public ScopeMetadata resolveScopeMetadata(BeanDefinition definition)

Description copied from interface: ScopeMetadataResolver

Resolve the ScopeMetadata appropriate to the supplied bean definition.

Implementations can of course use any strategy they like to determine the scope metadata, but some implementations that spring immediately to mind might be to use source level annotations present on the class of the supplied definition, or to use metadata present in the AttributeAccessor.attributeNames() of the supplied definition.

Specified by:

resolveScopeMetadata in interface ScopeMetadataResolver

Parameters:

definition - the target bean definition

Returns:

the relevant scope metadata; never null