org.springframework.beans.factory.annotation

Class BeanFactoryAnnotationUtils

java.lang.Object

org.springframework.beans.factory.annotation.BeanFactoryAnnotationUtils

public class BeanFactoryAnnotationUtils
extends java.lang.Object

Convenience methods performing bean lookups related to annotations, for example Spring's @Qualifier annotation.

Since:

3.1.2

Author:

Chris Beams

See Also:

BeanFactoryUtils

Constructor Summary

Constructors

Constructor and Description
BeanFactoryAnnotationUtils()

Method Summary

Modifier and Type	Method and Description
private static boolean	isQualifierMatch(java.lang.String qualifier, java.lang.String beanName, ConfigurableListableBeanFactory bf) Check whether the named bean declares a qualifier of the given name.
static <T> T	qualifiedBeanOfType(BeanFactory beanFactory, java.lang.Class<T> beanType, java.lang.String qualifier) Obtain a bean of type T from the given BeanFactory declaring a qualifier (e.g.
private static <T> T	qualifiedBeanOfType(ConfigurableListableBeanFactory bf, java.lang.Class<T> beanType, java.lang.String qualifier) Obtain a bean of type T from the given BeanFactory declaring a qualifier (e.g.

Methods inherited from class java.lang.Object

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

Constructor Detail

BeanFactoryAnnotationUtils

public BeanFactoryAnnotationUtils()

Method Detail

qualifiedBeanOfType

public static <T> T qualifiedBeanOfType(BeanFactory beanFactory,
                                        java.lang.Class<T> beanType,
                                        java.lang.String qualifier)

Obtain a bean of type T from the given BeanFactory declaring a qualifier (e.g. via <qualifier> or @Qualifier) matching the given qualifier, or having a bean name matching the given qualifier.

Parameters:

beanFactory - the BeanFactory to get the target bean from

beanType - the type of bean to retrieve

qualifier - the qualifier for selecting between multiple bean matches

Returns:

the matching bean of type T (never null)

Throws:

NoSuchBeanDefinitionException - if no matching bean of type T found

qualifiedBeanOfType

private static <T> T qualifiedBeanOfType(ConfigurableListableBeanFactory bf,
                                         java.lang.Class<T> beanType,
                                         java.lang.String qualifier)

Obtain a bean of type T from the given BeanFactory declaring a qualifier (e.g. <qualifier> or @Qualifier) matching the given qualifier).

Parameters:

bf - the BeanFactory to get the target bean from

beanType - the type of bean to retrieve

qualifier - the qualifier for selecting between multiple bean matches

Returns:

the matching bean of type T (never null)

Throws:

NoSuchBeanDefinitionException - if no matching bean of type T found

isQualifierMatch

private static boolean isQualifierMatch(java.lang.String qualifier,
                                        java.lang.String beanName,
                                        ConfigurableListableBeanFactory bf)

Check whether the named bean declares a qualifier of the given name.

Parameters:

qualifier - the qualifier to match

beanName - the name of the candidate bean

bf - the BeanFactory from which to retrieve the named bean

Returns:

true if either the bean definition (in the XML case) or the bean's factory method (in the @Bean case) defines a matching qualifier value (through <qualifier> or @Qualifier)