public final class ParameterResolutionDelegate extends Object
isAutowirable(java.lang.reflect.Parameter, int), 
resolveDependency(java.lang.reflect.Parameter, int, java.lang.Class<?>, org.springframework.beans.factory.config.AutowireCapableBeanFactory)| Modifier and Type | Method and Description | 
|---|---|
| static boolean | isAutowirable(Parameter parameter,
             int parameterIndex)Determine if the supplied  Parametercan potentially be
 autowired from anAutowireCapableBeanFactory. | 
| static Object | resolveDependency(Parameter parameter,
                 int parameterIndex,
                 Class<?> containingClass,
                 AutowireCapableBeanFactory beanFactory)Resolve the dependency for the supplied  Parameterfrom the
 suppliedAutowireCapableBeanFactory. | 
public static boolean isAutowirable(Parameter parameter, int parameterIndex)
Parameter can potentially be
 autowired from an AutowireCapableBeanFactory.
 Returns true if the supplied parameter is annotated or
 meta-annotated with @Autowired,
 @Qualifier, or @Value.
 
Note that resolveDependency(java.lang.reflect.Parameter, int, java.lang.Class<?>, org.springframework.beans.factory.config.AutowireCapableBeanFactory) may still be able to resolve the
 dependency for the supplied parameter even if this method returns false.
parameter - the parameter whose dependency should be autowired
 (must not be null)parameterIndex - the index of the parameter in the constructor or method
 that declares the parameterresolveDependency(java.lang.reflect.Parameter, int, java.lang.Class<?>, org.springframework.beans.factory.config.AutowireCapableBeanFactory)@Nullable public static Object resolveDependency(Parameter parameter, int parameterIndex, Class<?> containingClass, AutowireCapableBeanFactory beanFactory) throws BeansException
Parameter from the
 supplied AutowireCapableBeanFactory.
 Provides comprehensive autowiring support for individual method parameters
 on par with Spring's dependency injection facilities for autowired fields and
 methods, including support for @Autowired,
 @Qualifier, and @Value with support for property
 placeholders and SpEL expressions in @Value declarations.
 
The dependency is required unless the parameter is annotated or meta-annotated
 with @Autowired with the required
 flag set to false.
 
If an explicit qualifier is not declared, the name of the parameter will be used as the qualifier for resolving ambiguities.
parameter - the parameter whose dependency should be resolved (must not be
 null)parameterIndex - the index of the parameter in the constructor or method
 that declares the parametercontainingClass - the concrete class that contains the parameter; this may
 differ from the class that declares the parameter in that it may be a subclass
 thereof, potentially substituting type variables (must not be null)beanFactory - the AutowireCapableBeanFactory from which to resolve
 the dependency (must not be null)null if none foundBeansException - if dependency resolution failedisAutowirable(java.lang.reflect.Parameter, int), 
Autowired.required(), 
SynthesizingMethodParameter.forExecutable(Executable, int), 
AutowireCapableBeanFactory.resolveDependency(DependencyDescriptor, String)