public class QualifierAnnotationAutowireCandidateResolver extends Object implements AutowireCandidateResolver, BeanFactoryAware
AutowireCandidateResolver implementation that matches bean definition qualifiers
against qualifier annotations on the field or parameter to be autowired.
Also supports suggested expression values through a value annotation.
Also supports JSR-330's Qualifier annotation, if available.
AutowireCandidateQualifier,
Qualifier,
Value| Constructor and Description |
|---|
QualifierAnnotationAutowireCandidateResolver()
Create a new QualifierAnnotationAutowireCandidateResolver
for Spring's standard
Qualifier annotation. |
QualifierAnnotationAutowireCandidateResolver(Class<? extends Annotation> qualifierType)
Create a new QualifierAnnotationAutowireCandidateResolver
for the given qualifier annotation type.
|
QualifierAnnotationAutowireCandidateResolver(Set<Class<? extends Annotation>> qualifierTypes)
Create a new QualifierAnnotationAutowireCandidateResolver
for the given qualifier annotation types.
|
| Modifier and Type | Method and Description |
|---|---|
void |
addQualifierType(Class<? extends Annotation> qualifierType)
Register the given type to be used as a qualifier when autowiring.
|
protected boolean |
checkQualifier(BeanDefinitionHolder bdHolder,
Annotation annotation,
TypeConverter typeConverter)
Match the given qualifier annotation against the candidate bean definition.
|
protected boolean |
checkQualifiers(BeanDefinitionHolder bdHolder,
Annotation[] annotationsToSearch)
Match the given qualifier annotations against the candidate bean definition.
|
protected Object |
extractValue(Annotation valueAnnotation)
Extract the value attribute from the given annotation.
|
protected Object |
findValue(Annotation[] annotationsToSearch)
Determine a suggested value from any of the given candidate annotations.
|
protected Annotation |
getFactoryMethodAnnotation(RootBeanDefinition bd,
Class<? extends Annotation> type) |
protected RootBeanDefinition |
getResolvedDecoratedDefinition(RootBeanDefinition rbd) |
Object |
getSuggestedValue(DependencyDescriptor descriptor)
Determine whether the given dependency carries a value annotation.
|
boolean |
isAutowireCandidate(BeanDefinitionHolder bdHolder,
DependencyDescriptor descriptor)
Determine whether the provided bean definition is an autowire candidate.
|
protected boolean |
isQualifier(Class<? extends Annotation> annotationType)
Checks whether the given annotation type is a recognized qualifier type.
|
void |
setBeanFactory(BeanFactory beanFactory)
Callback that supplies the owning factory to a bean instance.
|
void |
setValueAnnotationType(Class<? extends Annotation> valueAnnotationType)
Set the 'value' annotation type, to be used on fields, method parameters
and constructor parameters.
|
public QualifierAnnotationAutowireCandidateResolver()
public QualifierAnnotationAutowireCandidateResolver(Class<? extends Annotation> qualifierType)
qualifierType - the qualifier annotation to look forpublic QualifierAnnotationAutowireCandidateResolver(Set<Class<? extends Annotation>> qualifierTypes)
qualifierTypes - the qualifier annotations to look forpublic void addQualifierType(Class<? extends Annotation> qualifierType)
This identifies qualifier annotations for direct use (on fields, method parameters and constructor parameters) as well as meta annotations that in turn identify actual qualifier annotations.
This implementation only supports annotations as qualifier types.
The default is Spring's Qualifier annotation which serves
as a qualifier for direct use and also as a meta annotation.
qualifierType - the annotation type to registerpublic void setValueAnnotationType(Class<? extends Annotation> valueAnnotationType)
The default value annotation type is the Spring-provided
Value annotation.
This setter property exists so that developers can provide their own (non-Spring-specific) annotation type to indicate a default value expression for a specific argument.
public void setBeanFactory(BeanFactory beanFactory)
BeanFactoryAwareInvoked after the population of normal bean properties
but before an initialization callback such as
InitializingBean.afterPropertiesSet() or a custom init-method.
setBeanFactory in interface BeanFactoryAwarebeanFactory - owning BeanFactory (never null).
The bean can immediately call methods on the factory.BeanInitializationExceptionpublic boolean isAutowireCandidate(BeanDefinitionHolder bdHolder, DependencyDescriptor descriptor)
To be considered a candidate the bean's autowire-candidate attribute must not have been set to 'false'. Also, if an annotation on the field or parameter to be autowired is recognized by this bean factory as a qualifier, the bean must 'match' against the annotation as well as any attributes it may contain. The bean definition must contain the same qualifier or match by meta attributes. A "value" attribute will fallback to match against the bean name or an alias if a qualifier or attribute does not match.
isAutowireCandidate in interface AutowireCandidateResolverbdHolder - the bean definition including bean name and aliasesdescriptor - the descriptor for the target method parameter or fieldQualifierprotected boolean checkQualifiers(BeanDefinitionHolder bdHolder, Annotation[] annotationsToSearch)
protected boolean isQualifier(Class<? extends Annotation> annotationType)
protected boolean checkQualifier(BeanDefinitionHolder bdHolder, Annotation annotation, TypeConverter typeConverter)
protected RootBeanDefinition getResolvedDecoratedDefinition(RootBeanDefinition rbd)
protected Annotation getFactoryMethodAnnotation(RootBeanDefinition bd, Class<? extends Annotation> type)
public Object getSuggestedValue(DependencyDescriptor descriptor)
getSuggestedValue in interface AutowireCandidateResolverdescriptor - the descriptor for the target method parameter or fieldnull if none foundValueprotected Object findValue(Annotation[] annotationsToSearch)
protected Object extractValue(Annotation valueAnnotation)