Class DefaultListableBeanFactory

All Implemented Interfaces:
Serializable, BeanFactory, AutowireCapableBeanFactory, ConfigurableBeanFactory, ConfigurableListableBeanFactory, SingletonBeanRegistry, HierarchicalBeanFactory, ListableBeanFactory, BeanDefinitionRegistry, org.springframework.core.AliasRegistry

Spring's default implementation of the ConfigurableListableBeanFactory and BeanDefinitionRegistry interfaces: a full-fledged bean factory based on bean definition metadata, extensible through post-processors.

Typical usage is registering all bean definitions first (possibly read from a bean definition file), before accessing beans. Bean lookup by name is therefore an inexpensive operation in a local bean definition table, operating on pre-resolved bean definition metadata objects.

Note that readers for specific bean definition formats are typically implemented separately rather than as bean factory subclasses: see for example XmlBeanDefinitionReader.

For an alternative implementation of the ListableBeanFactory interface, have a look at StaticListableBeanFactory, which manages existing bean instances rather than creating new ones based on bean definitions.

Since:
16 April 2001
Author:
Rod Johnson, Juergen Hoeller, Sam Brannen, Costin Leau, Chris Beams, Phillip Webb, Stephane Nicoll, Sebastien Deleuze
See Also:
  • Constructor Details

    • DefaultListableBeanFactory

      public DefaultListableBeanFactory()
      Create a new DefaultListableBeanFactory.
    • DefaultListableBeanFactory

      public DefaultListableBeanFactory(@Nullable BeanFactory parentBeanFactory)
      Create a new DefaultListableBeanFactory with the given parent.
      Parameters:
      parentBeanFactory - the parent BeanFactory
  • Method Details

    • setSerializationId

      public void setSerializationId(@Nullable String serializationId)
      Specify an id for serialization purposes, allowing this BeanFactory to be deserialized from this id back into the BeanFactory object, if needed.
    • getSerializationId

      @Nullable public String getSerializationId()
      Return an id for serialization purposes, if specified, allowing this BeanFactory to be deserialized from this id back into the BeanFactory object, if needed.
      Since:
      4.1.2
    • setAllowBeanDefinitionOverriding

      public void setAllowBeanDefinitionOverriding(boolean allowBeanDefinitionOverriding)
      Set whether it should be allowed to override bean definitions by registering a different definition with the same name, automatically replacing the former. If not, an exception will be thrown. This also applies to overriding aliases.

      Default is "true".

      See Also:
    • isAllowBeanDefinitionOverriding

      public boolean isAllowBeanDefinitionOverriding()
      Return whether it should be allowed to override bean definitions by registering a different definition with the same name, automatically replacing the former.
      Since:
      4.1.2
    • setAllowEagerClassLoading

      public void setAllowEagerClassLoading(boolean allowEagerClassLoading)
      Set whether the factory is allowed to eagerly load bean classes even for bean definitions that are marked as "lazy-init".

      Default is "true". Turn this flag off to suppress class loading for lazy-init beans unless such a bean is explicitly requested. In particular, by-type lookups will then simply ignore bean definitions without resolved class name, instead of loading the bean classes on demand just to perform a type check.

      See Also:
    • isAllowEagerClassLoading

      public boolean isAllowEagerClassLoading()
      Return whether the factory is allowed to eagerly load bean classes even for bean definitions that are marked as "lazy-init".
      Since:
      4.1.2
    • setDependencyComparator

      public void setDependencyComparator(@Nullable Comparator<Object> dependencyComparator)
      Set a Comparator for dependency Lists and arrays.
      Since:
      4.0
      See Also:
      • OrderComparator
      • AnnotationAwareOrderComparator
    • getDependencyComparator

      @Nullable public Comparator<Object> getDependencyComparator()
      Return the dependency comparator for this BeanFactory (may be null).
      Since:
      4.0
    • setAutowireCandidateResolver

      public void setAutowireCandidateResolver(AutowireCandidateResolver autowireCandidateResolver)
      Set a custom autowire candidate resolver for this BeanFactory to use when deciding whether a bean definition should be considered as a candidate for autowiring.
    • getAutowireCandidateResolver

      public AutowireCandidateResolver getAutowireCandidateResolver()
      Return the autowire candidate resolver for this BeanFactory (never null).
    • copyConfigurationFrom

      public void copyConfigurationFrom(ConfigurableBeanFactory otherFactory)
      Description copied from interface: ConfigurableBeanFactory
      Copy all relevant configuration from the given other factory.

      Should include all standard configuration settings as well as BeanPostProcessors, Scopes, and factory-specific internal settings. Should not include any metadata of actual bean definitions, such as BeanDefinition objects and bean name aliases.

      Specified by:
      copyConfigurationFrom in interface ConfigurableBeanFactory
      Overrides:
      copyConfigurationFrom in class AbstractAutowireCapableBeanFactory
      Parameters:
      otherFactory - the other BeanFactory to copy from
    • getBean

      public <T> T getBean(Class<T> requiredType) throws BeansException
      Description copied from interface: BeanFactory
      Return the bean instance that uniquely matches the given object type, if any.

      This method goes into ListableBeanFactory by-type lookup territory but may also be translated into a conventional by-name lookup based on the name of the given type. For more extensive retrieval operations across sets of beans, use ListableBeanFactory and/or BeanFactoryUtils.

      Specified by:
      getBean in interface BeanFactory
      Parameters:
      requiredType - type the bean must match; can be an interface or superclass
      Returns:
      an instance of the single bean matching the required type
      Throws:
      NoSuchBeanDefinitionException - if no bean of the given type was found
      NoUniqueBeanDefinitionException - if more than one bean of the given type was found
      BeansException - if the bean could not be created
      See Also:
    • getBean

      public <T> T getBean(Class<T> requiredType, @Nullable Object... args) throws BeansException
      Description copied from interface: BeanFactory
      Return an instance, which may be shared or independent, of the specified bean.

      Allows for specifying explicit constructor arguments / factory method arguments, overriding the specified default arguments (if any) in the bean definition. Note that the provided arguments need to match a specific candidate constructor / factory method in the order of declared parameters.

      This method goes into ListableBeanFactory by-type lookup territory but may also be translated into a conventional by-name lookup based on the name of the given type. For more extensive retrieval operations across sets of beans, use ListableBeanFactory and/or BeanFactoryUtils.

      Specified by:
      getBean in interface BeanFactory
      Parameters:
      requiredType - type the bean must match; can be an interface or superclass
      args - arguments to use when creating a bean instance using explicit arguments (only applied when creating a new instance as opposed to retrieving an existing one)
      Returns:
      an instance of the bean
      Throws:
      NoSuchBeanDefinitionException - if there is no such bean definition
      BeanDefinitionStoreException - if arguments have been given but the affected bean isn't a prototype
      BeansException - if the bean could not be created
    • getBeanProvider

      public <T> ObjectProvider<T> getBeanProvider(Class<T> requiredType)
      Description copied from interface: BeanFactory
      Return a provider for the specified bean, allowing for lazy on-demand retrieval of instances, including availability and uniqueness options.

      For matching a generic type, consider BeanFactory.getBeanProvider(ResolvableType).

      Specified by:
      getBeanProvider in interface BeanFactory
      Parameters:
      requiredType - type the bean must match; can be an interface or superclass
      Returns:
      a corresponding provider handle
      See Also:
    • getBeanProvider

      public <T> ObjectProvider<T> getBeanProvider(org.springframework.core.ResolvableType requiredType)
      Description copied from interface: BeanFactory
      Return a provider for the specified bean, allowing for lazy on-demand retrieval of instances, including availability and uniqueness options. This variant allows for specifying a generic type to match, similar to reflective injection points with generic type declarations in method/constructor parameters.

      Note that collections of beans are not supported here, in contrast to reflective injection points. For programmatically retrieving a list of beans matching a specific type, specify the actual bean type as an argument here and subsequently use ObjectProvider.orderedStream() or its lazy streaming/iteration options.

      Also, generics matching is strict here, as per the Java assignment rules. For lenient fallback matching with unchecked semantics (similar to the ´unchecked´ Java compiler warning), consider calling BeanFactory.getBeanProvider(Class) with the raw type as a second step if no full generic match is available with this variant.

      Specified by:
      getBeanProvider in interface BeanFactory
      Parameters:
      requiredType - type the bean must match; can be a generic type declaration
      Returns:
      a corresponding provider handle
      See Also:
    • containsBeanDefinition

      public boolean containsBeanDefinition(String beanName)
      Description copied from class: AbstractBeanFactory
      Check if this bean factory contains a bean definition with the given name. Does not consider any hierarchy this factory may participate in. Invoked by containsBean when no cached singleton instance is found.

      Depending on the nature of the concrete bean factory implementation, this operation might be expensive (for example, because of directory lookups in external registries). However, for listable bean factories, this usually just amounts to a local hash lookup: The operation is therefore part of the public interface there. The same implementation can serve for both this template method and the public interface method in that case.

      Specified by:
      containsBeanDefinition in interface BeanDefinitionRegistry
      Specified by:
      containsBeanDefinition in interface ListableBeanFactory
      Specified by:
      containsBeanDefinition in class AbstractBeanFactory
      Parameters:
      beanName - the name of the bean to look for
      Returns:
      if this bean factory contains a bean definition with the given name
      See Also:
    • getBeanDefinitionCount

      public int getBeanDefinitionCount()
      Description copied from interface: ListableBeanFactory
      Return the number of beans defined in the factory.

      Does not consider any hierarchy this factory may participate in, and ignores any singleton beans that have been registered by other means than bean definitions.

      Specified by:
      getBeanDefinitionCount in interface BeanDefinitionRegistry
      Specified by:
      getBeanDefinitionCount in interface ListableBeanFactory
      Returns:
      the number of beans defined in the factory
    • getBeanDefinitionNames

      public String[] getBeanDefinitionNames()
      Description copied from interface: ListableBeanFactory
      Return the names of all beans defined in this factory.

      Does not consider any hierarchy this factory may participate in, and ignores any singleton beans that have been registered by other means than bean definitions.

      Specified by:
      getBeanDefinitionNames in interface BeanDefinitionRegistry
      Specified by:
      getBeanDefinitionNames in interface ListableBeanFactory
      Returns:
      the names of all beans defined in this factory, or an empty array if none defined
    • getBeanProvider

      public <T> ObjectProvider<T> getBeanProvider(Class<T> requiredType, boolean allowEagerInit)
      Description copied from interface: ListableBeanFactory
      Return a provider for the specified bean, allowing for lazy on-demand retrieval of instances, including availability and uniqueness options.
      Specified by:
      getBeanProvider in interface ListableBeanFactory
      Parameters:
      requiredType - type the bean must match; can be an interface or superclass
      allowEagerInit - whether stream-based access may initialize lazy-init singletons and objects created by FactoryBeans (or by factory methods with a "factory-bean" reference) for the type check
      Returns:
      a corresponding provider handle
      See Also:
    • getBeanProvider

      public <T> ObjectProvider<T> getBeanProvider(org.springframework.core.ResolvableType requiredType, boolean allowEagerInit)
      Description copied from interface: ListableBeanFactory
      Return a provider for the specified bean, allowing for lazy on-demand retrieval of instances, including availability and uniqueness options.
      Specified by:
      getBeanProvider in interface ListableBeanFactory
      Parameters:
      requiredType - type the bean must match; can be a generic type declaration. Note that collection types are not supported here, in contrast to reflective injection points. For programmatically retrieving a list of beans matching a specific type, specify the actual bean type as an argument here and subsequently use ObjectProvider.orderedStream() or its lazy streaming/iteration options.
      allowEagerInit - whether stream-based access may initialize lazy-init singletons and objects created by FactoryBeans (or by factory methods with a "factory-bean" reference) for the type check
      Returns:
      a corresponding provider handle
      See Also:
    • getBeanNamesForType

      public String[] getBeanNamesForType(org.springframework.core.ResolvableType type)
      Description copied from interface: ListableBeanFactory
      Return the names of beans matching the given type (including subclasses), judging from either bean definitions or the value of getObjectType in the case of FactoryBeans.

      NOTE: This method introspects top-level beans only. It does not check nested beans which might match the specified type as well.

      Does consider objects created by FactoryBeans, which means that FactoryBeans will get initialized. If the object created by the FactoryBean doesn't match, the raw FactoryBean itself will be matched against the type.

      Does not consider any hierarchy this factory may participate in. Use BeanFactoryUtils' beanNamesForTypeIncludingAncestors to include beans in ancestor factories too.

      Note: Does not ignore singleton beans that have been registered by other means than bean definitions.

      This version of getBeanNamesForType matches all kinds of beans, be it singletons, prototypes, or FactoryBeans. In most implementations, the result will be the same as for getBeanNamesForType(type, true, true).

      Bean names returned by this method should always return bean names in the order of definition in the backend configuration, as far as possible.

      Specified by:
      getBeanNamesForType in interface ListableBeanFactory
      Parameters:
      type - the generically typed class or interface to match
      Returns:
      the names of beans (or objects created by FactoryBeans) matching the given object type (including subclasses), or an empty array if none
      See Also:
    • getBeanNamesForType

      public String[] getBeanNamesForType(org.springframework.core.ResolvableType type, boolean includeNonSingletons, boolean allowEagerInit)
      Description copied from interface: ListableBeanFactory
      Return the names of beans matching the given type (including subclasses), judging from either bean definitions or the value of getObjectType in the case of FactoryBeans.

      NOTE: This method introspects top-level beans only. It does not check nested beans which might match the specified type as well.

      Does consider objects created by FactoryBeans if the "allowEagerInit" flag is set, which means that FactoryBeans will get initialized. If the object created by the FactoryBean doesn't match, the raw FactoryBean itself will be matched against the type. If "allowEagerInit" is not set, only raw FactoryBeans will be checked (which doesn't require initialization of each FactoryBean).

      Does not consider any hierarchy this factory may participate in. Use BeanFactoryUtils' beanNamesForTypeIncludingAncestors to include beans in ancestor factories too.

      Note: Does not ignore singleton beans that have been registered by other means than bean definitions.

      Bean names returned by this method should always return bean names in the order of definition in the backend configuration, as far as possible.

      Specified by:
      getBeanNamesForType in interface ListableBeanFactory
      Parameters:
      type - the generically typed class or interface to match
      includeNonSingletons - whether to include prototype or scoped beans too or just singletons (also applies to FactoryBeans)
      allowEagerInit - whether to initialize lazy-init singletons and objects created by FactoryBeans (or by factory methods with a "factory-bean" reference) for the type check. Note that FactoryBeans need to be eagerly initialized to determine their type: So be aware that passing in "true" for this flag will initialize FactoryBeans and "factory-bean" references.
      Returns:
      the names of beans (or objects created by FactoryBeans) matching the given object type (including subclasses), or an empty array if none
      See Also:
    • getBeanNamesForType

      public String[] getBeanNamesForType(@Nullable Class<?> type)
      Description copied from interface: ListableBeanFactory
      Return the names of beans matching the given type (including subclasses), judging from either bean definitions or the value of getObjectType in the case of FactoryBeans.

      NOTE: This method introspects top-level beans only. It does not check nested beans which might match the specified type as well.

      Does consider objects created by FactoryBeans, which means that FactoryBeans will get initialized. If the object created by the FactoryBean doesn't match, the raw FactoryBean itself will be matched against the type.

      Does not consider any hierarchy this factory may participate in. Use BeanFactoryUtils' beanNamesForTypeIncludingAncestors to include beans in ancestor factories too.

      Note: Does not ignore singleton beans that have been registered by other means than bean definitions.

      This version of getBeanNamesForType matches all kinds of beans, be it singletons, prototypes, or FactoryBeans. In most implementations, the result will be the same as for getBeanNamesForType(type, true, true).

      Bean names returned by this method should always return bean names in the order of definition in the backend configuration, as far as possible.

      Specified by:
      getBeanNamesForType in interface ListableBeanFactory
      Parameters:
      type - the class or interface to match, or null for all bean names
      Returns:
      the names of beans (or objects created by FactoryBeans) matching the given object type (including subclasses), or an empty array if none
      See Also:
    • getBeanNamesForType

      public String[] getBeanNamesForType(@Nullable Class<?> type, boolean includeNonSingletons, boolean allowEagerInit)
      Description copied from interface: ListableBeanFactory
      Return the names of beans matching the given type (including subclasses), judging from either bean definitions or the value of getObjectType in the case of FactoryBeans.

      NOTE: This method introspects top-level beans only. It does not check nested beans which might match the specified type as well.

      Does consider objects created by FactoryBeans if the "allowEagerInit" flag is set, which means that FactoryBeans will get initialized. If the object created by the FactoryBean doesn't match, the raw FactoryBean itself will be matched against the type. If "allowEagerInit" is not set, only raw FactoryBeans will be checked (which doesn't require initialization of each FactoryBean).

      Does not consider any hierarchy this factory may participate in. Use BeanFactoryUtils' beanNamesForTypeIncludingAncestors to include beans in ancestor factories too.

      Note: Does not ignore singleton beans that have been registered by other means than bean definitions.

      Bean names returned by this method should always return bean names in the order of definition in the backend configuration, as far as possible.

      Specified by:
      getBeanNamesForType in interface ListableBeanFactory
      Parameters:
      type - the class or interface to match, or null for all bean names
      includeNonSingletons - whether to include prototype or scoped beans too or just singletons (also applies to FactoryBeans)
      allowEagerInit - whether to initialize lazy-init singletons and objects created by FactoryBeans (or by factory methods with a "factory-bean" reference) for the type check. Note that FactoryBeans need to be eagerly initialized to determine their type: So be aware that passing in "true" for this flag will initialize FactoryBeans and "factory-bean" references.
      Returns:
      the names of beans (or objects created by FactoryBeans) matching the given object type (including subclasses), or an empty array if none
      See Also:
    • getBeansOfType

      public <T> Map<String,T> getBeansOfType(@Nullable Class<T> type) throws BeansException
      Description copied from interface: ListableBeanFactory
      Return the bean instances that match the given object type (including subclasses), judging from either bean definitions or the value of getObjectType in the case of FactoryBeans.

      NOTE: This method introspects top-level beans only. It does not check nested beans which might match the specified type as well.

      Does consider objects created by FactoryBeans, which means that FactoryBeans will get initialized. If the object created by the FactoryBean doesn't match, the raw FactoryBean itself will be matched against the type.

      Does not consider any hierarchy this factory may participate in. Use BeanFactoryUtils' beansOfTypeIncludingAncestors to include beans in ancestor factories too.

      Note: Does not ignore singleton beans that have been registered by other means than bean definitions.

      This version of getBeansOfType matches all kinds of beans, be it singletons, prototypes, or FactoryBeans. In most implementations, the result will be the same as for getBeansOfType(type, true, true).

      The Map returned by this method should always return bean names and corresponding bean instances in the order of definition in the backend configuration, as far as possible.

      Specified by:
      getBeansOfType in interface ListableBeanFactory
      Parameters:
      type - the class or interface to match, or null for all concrete beans
      Returns:
      a Map with the matching beans, containing the bean names as keys and the corresponding bean instances as values
      Throws:
      BeansException - if a bean could not be created
      See Also:
    • getBeansOfType

      public <T> Map<String,T> getBeansOfType(@Nullable Class<T> type, boolean includeNonSingletons, boolean allowEagerInit) throws BeansException
      Description copied from interface: ListableBeanFactory
      Return the bean instances that match the given object type (including subclasses), judging from either bean definitions or the value of getObjectType in the case of FactoryBeans.

      NOTE: This method introspects top-level beans only. It does not check nested beans which might match the specified type as well.

      Does consider objects created by FactoryBeans if the "allowEagerInit" flag is set, which means that FactoryBeans will get initialized. If the object created by the FactoryBean doesn't match, the raw FactoryBean itself will be matched against the type. If "allowEagerInit" is not set, only raw FactoryBeans will be checked (which doesn't require initialization of each FactoryBean).

      Does not consider any hierarchy this factory may participate in. Use BeanFactoryUtils' beansOfTypeIncludingAncestors to include beans in ancestor factories too.

      Note: Does not ignore singleton beans that have been registered by other means than bean definitions.

      The Map returned by this method should always return bean names and corresponding bean instances in the order of definition in the backend configuration, as far as possible.

      Specified by:
      getBeansOfType in interface ListableBeanFactory
      Parameters:
      type - the class or interface to match, or null for all concrete beans
      includeNonSingletons - whether to include prototype or scoped beans too or just singletons (also applies to FactoryBeans)
      allowEagerInit - whether to initialize lazy-init singletons and objects created by FactoryBeans (or by factory methods with a "factory-bean" reference) for the type check. Note that FactoryBeans need to be eagerly initialized to determine their type: So be aware that passing in "true" for this flag will initialize FactoryBeans and "factory-bean" references.
      Returns:
      a Map with the matching beans, containing the bean names as keys and the corresponding bean instances as values
      Throws:
      BeansException - if a bean could not be created
      See Also:
    • getBeanNamesForAnnotation

      public String[] getBeanNamesForAnnotation(Class<? extends Annotation> annotationType)
      Description copied from interface: ListableBeanFactory
      Find all names of beans which are annotated with the supplied Annotation type, without creating corresponding bean instances yet.

      Note that this method considers objects created by FactoryBeans, which means that FactoryBeans will get initialized in order to determine their object type.

      Specified by:
      getBeanNamesForAnnotation in interface ListableBeanFactory
      Parameters:
      annotationType - the type of annotation to look for (at class, interface or factory method level of the specified bean)
      Returns:
      the names of all matching beans
      See Also:
    • getBeansWithAnnotation

      public Map<String,Object> getBeansWithAnnotation(Class<? extends Annotation> annotationType)
      Description copied from interface: ListableBeanFactory
      Find all beans which are annotated with the supplied Annotation type, returning a Map of bean names with corresponding bean instances.

      Note that this method considers objects created by FactoryBeans, which means that FactoryBeans will get initialized in order to determine their object type.

      Specified by:
      getBeansWithAnnotation in interface ListableBeanFactory
      Parameters:
      annotationType - the type of annotation to look for (at class, interface or factory method level of the specified bean)
      Returns:
      a Map with the matching beans, containing the bean names as keys and the corresponding bean instances as values
      See Also:
    • findAnnotationOnBean

      @Nullable public <A extends Annotation> A findAnnotationOnBean(String beanName, Class<A> annotationType) throws NoSuchBeanDefinitionException
      Description copied from interface: ListableBeanFactory
      Find an Annotation of annotationType on the specified bean, traversing its interfaces and superclasses if no annotation can be found on the given class itself, as well as checking the bean's factory method (if any).
      Specified by:
      findAnnotationOnBean in interface ListableBeanFactory
      Parameters:
      beanName - the name of the bean to look for annotations on
      annotationType - the type of annotation to look for (at class, interface or factory method level of the specified bean)
      Returns:
      the annotation of the given type if found, or null otherwise
      Throws:
      NoSuchBeanDefinitionException - if there is no bean with the given name
      See Also:
    • findAnnotationOnBean

      @Nullable public <A extends Annotation> A findAnnotationOnBean(String beanName, Class<A> annotationType, boolean allowFactoryBeanInit) throws NoSuchBeanDefinitionException
      Description copied from interface: ListableBeanFactory
      Find an Annotation of annotationType on the specified bean, traversing its interfaces and superclasses if no annotation can be found on the given class itself, as well as checking the bean's factory method (if any).
      Specified by:
      findAnnotationOnBean in interface ListableBeanFactory
      Parameters:
      beanName - the name of the bean to look for annotations on
      annotationType - the type of annotation to look for (at class, interface or factory method level of the specified bean)
      allowFactoryBeanInit - whether a FactoryBean may get initialized just for the purpose of determining its object type
      Returns:
      the annotation of the given type if found, or null otherwise
      Throws:
      NoSuchBeanDefinitionException - if there is no bean with the given name
      See Also:
    • findAllAnnotationsOnBean

      public <A extends Annotation> Set<A> findAllAnnotationsOnBean(String beanName, Class<A> annotationType, boolean allowFactoryBeanInit) throws NoSuchBeanDefinitionException
      Description copied from interface: ListableBeanFactory
      Find all Annotation instances of annotationType on the specified bean, traversing its interfaces and superclasses if no annotation can be found on the given class itself, as well as checking the bean's factory method (if any).
      Specified by:
      findAllAnnotationsOnBean in interface ListableBeanFactory
      Parameters:
      beanName - the name of the bean to look for annotations on
      annotationType - the type of annotation to look for (at class, interface or factory method level of the specified bean)
      allowFactoryBeanInit - whether a FactoryBean may get initialized just for the purpose of determining its object type
      Returns:
      the set of annotations of the given type found (potentially empty)
      Throws:
      NoSuchBeanDefinitionException - if there is no bean with the given name
      See Also:
    • registerResolvableDependency

      public void registerResolvableDependency(Class<?> dependencyType, @Nullable Object autowiredValue)
      Description copied from interface: ConfigurableListableBeanFactory
      Register a special dependency type with corresponding autowired value.

      This is intended for factory/context references that are supposed to be autowirable but are not defined as beans in the factory: e.g. a dependency of type ApplicationContext resolved to the ApplicationContext instance that the bean is living in.

      Note: There are no such default types registered in a plain BeanFactory, not even for the BeanFactory interface itself.

      Specified by:
      registerResolvableDependency in interface ConfigurableListableBeanFactory
      Parameters:
      dependencyType - the dependency type to register. This will typically be a base interface such as BeanFactory, with extensions of it resolved as well if declared as an autowiring dependency (e.g. ListableBeanFactory), as long as the given value actually implements the extended interface.
      autowiredValue - the corresponding autowired value. This may also be an implementation of the ObjectFactory interface, which allows for lazy resolution of the actual target value.
    • isAutowireCandidate

      public boolean isAutowireCandidate(String beanName, DependencyDescriptor descriptor) throws NoSuchBeanDefinitionException
      Description copied from interface: ConfigurableListableBeanFactory
      Determine whether the specified bean qualifies as an autowire candidate, to be injected into other beans which declare a dependency of matching type.

      This method checks ancestor factories as well.

      Specified by:
      isAutowireCandidate in interface ConfigurableListableBeanFactory
      Parameters:
      beanName - the name of the bean to check
      descriptor - the descriptor of the dependency to resolve
      Returns:
      whether the bean should be considered as autowire candidate
      Throws:
      NoSuchBeanDefinitionException - if there is no bean with the given name
    • isAutowireCandidate

      protected boolean isAutowireCandidate(String beanName, DependencyDescriptor descriptor, AutowireCandidateResolver resolver) throws NoSuchBeanDefinitionException
      Determine whether the specified bean definition qualifies as an autowire candidate, to be injected into other beans which declare a dependency of matching type.
      Parameters:
      beanName - the name of the bean definition to check
      descriptor - the descriptor of the dependency to resolve
      resolver - the AutowireCandidateResolver to use for the actual resolution algorithm
      Returns:
      whether the bean should be considered as autowire candidate
      Throws:
      NoSuchBeanDefinitionException
    • isAutowireCandidate

      protected boolean isAutowireCandidate(String beanName, RootBeanDefinition mbd, DependencyDescriptor descriptor, AutowireCandidateResolver resolver)
      Determine whether the specified bean definition qualifies as an autowire candidate, to be injected into other beans which declare a dependency of matching type.
      Parameters:
      beanName - the name of the bean definition to check
      mbd - the merged bean definition to check
      descriptor - the descriptor of the dependency to resolve
      resolver - the AutowireCandidateResolver to use for the actual resolution algorithm
      Returns:
      whether the bean should be considered as autowire candidate
    • getBeanDefinition

      public BeanDefinition getBeanDefinition(String beanName) throws NoSuchBeanDefinitionException
      Description copied from class: AbstractBeanFactory
      Return the bean definition for the given bean name. Subclasses should normally implement caching, as this method is invoked by this class every time bean definition metadata is needed.

      Depending on the nature of the concrete bean factory implementation, this operation might be expensive (for example, because of directory lookups in external registries). However, for listable bean factories, this usually just amounts to a local hash lookup: The operation is therefore part of the public interface there. The same implementation can serve for both this template method and the public interface method in that case.

      Specified by:
      getBeanDefinition in interface BeanDefinitionRegistry
      Specified by:
      getBeanDefinition in interface ConfigurableListableBeanFactory
      Specified by:
      getBeanDefinition in class AbstractBeanFactory
      Parameters:
      beanName - the name of the bean to find a definition for
      Returns:
      the BeanDefinition for this prototype name (never null)
      Throws:
      NoSuchBeanDefinitionException - if the bean definition cannot be resolved
      See Also:
    • getBeanNamesIterator

      public Iterator<String> getBeanNamesIterator()
      Description copied from interface: ConfigurableListableBeanFactory
      Return a unified view over all bean names managed by this factory.

      Includes bean definition names as well as names of manually registered singleton instances, with bean definition names consistently coming first, analogous to how type/annotation specific retrieval of bean names works.

      Specified by:
      getBeanNamesIterator in interface ConfigurableListableBeanFactory
      Returns:
      the composite iterator for the bean names view
      See Also:
    • clearMergedBeanDefinition

      protected void clearMergedBeanDefinition(String beanName)
      Description copied from class: AbstractBeanFactory
      Remove the merged bean definition for the specified bean, recreating it on next access.
      Overrides:
      clearMergedBeanDefinition in class AbstractBeanFactory
      Parameters:
      beanName - the bean name to clear the merged definition for
    • clearMetadataCache

      public void clearMetadataCache()
      Description copied from class: AbstractBeanFactory
      Clear the merged bean definition cache, removing entries for beans which are not considered eligible for full metadata caching yet.

      Typically triggered after changes to the original bean definitions, e.g. after applying a BeanFactoryPostProcessor. Note that metadata for beans which have already been created at this point will be kept around.

      Specified by:
      clearMetadataCache in interface ConfigurableListableBeanFactory
      Overrides:
      clearMetadataCache in class AbstractBeanFactory
      See Also:
    • freezeConfiguration

      public void freezeConfiguration()
      Description copied from interface: ConfigurableListableBeanFactory
      Freeze all bean definitions, signalling that the registered bean definitions will not be modified or post-processed any further.

      This allows the factory to aggressively cache bean definition metadata going forward, after clearing the initial temporary metadata cache.

      Specified by:
      freezeConfiguration in interface ConfigurableListableBeanFactory
      See Also:
    • isConfigurationFrozen

      public boolean isConfigurationFrozen()
      Description copied from interface: ConfigurableListableBeanFactory
      Return whether this factory's bean definitions are frozen, i.e. are not supposed to be modified or post-processed any further.
      Specified by:
      isConfigurationFrozen in interface ConfigurableListableBeanFactory
      Returns:
      true if the factory's configuration is considered frozen
      See Also:
    • isBeanEligibleForMetadataCaching

      protected boolean isBeanEligibleForMetadataCaching(String beanName)
      Considers all beans as eligible for metadata caching if the factory's configuration has been marked as frozen.
      Overrides:
      isBeanEligibleForMetadataCaching in class AbstractBeanFactory
      Parameters:
      beanName - the name of the bean
      Returns:
      true if the bean's metadata may be cached at this point already
      See Also:
    • obtainInstanceFromSupplier

      @Nullable protected Object obtainInstanceFromSupplier(Supplier<?> supplier, String beanName, RootBeanDefinition mbd) throws Exception
      Description copied from class: AbstractAutowireCapableBeanFactory
      Obtain a bean instance from the given supplier.
      Overrides:
      obtainInstanceFromSupplier in class AbstractAutowireCapableBeanFactory
      Parameters:
      supplier - the configured supplier
      beanName - the corresponding bean name
      mbd - the bean definition for the bean
      Returns:
      the bean instance (possibly null)
      Throws:
      Exception
    • preInstantiateSingletons

      public void preInstantiateSingletons() throws BeansException
      Description copied from interface: ConfigurableListableBeanFactory
      Ensure that all non-lazy-init singletons are instantiated, also considering FactoryBeans. Typically invoked at the end of factory setup, if desired.
      Specified by:
      preInstantiateSingletons in interface ConfigurableListableBeanFactory
      Throws:
      BeansException - if one of the singleton beans could not be created. Note: This may have left the factory with some beans already initialized! Call ConfigurableBeanFactory.destroySingletons() for full cleanup in this case.
      See Also:
    • registerBeanDefinition

      public void registerBeanDefinition(String beanName, BeanDefinition beanDefinition) throws BeanDefinitionStoreException
      Description copied from interface: BeanDefinitionRegistry
      Register a new bean definition with this registry. Must support RootBeanDefinition and ChildBeanDefinition.
      Specified by:
      registerBeanDefinition in interface BeanDefinitionRegistry
      Parameters:
      beanName - the name of the bean instance to register
      beanDefinition - definition of the bean instance to register
      Throws:
      BeanDefinitionStoreException - if the BeanDefinition is invalid
      BeanDefinitionOverrideException - if there is already a BeanDefinition for the specified bean name and we are not allowed to override it
      See Also:
    • removeBeanDefinition

      public void removeBeanDefinition(String beanName) throws NoSuchBeanDefinitionException
      Description copied from interface: BeanDefinitionRegistry
      Remove the BeanDefinition for the given name.
      Specified by:
      removeBeanDefinition in interface BeanDefinitionRegistry
      Parameters:
      beanName - the name of the bean instance to register
      Throws:
      NoSuchBeanDefinitionException - if there is no such bean definition
    • resetBeanDefinition

      protected void resetBeanDefinition(String beanName)
      Reset all bean definition caches for the given bean, including the caches of beans that are derived from it.

      Called after an existing bean definition has been replaced or removed, triggering clearMergedBeanDefinition(java.lang.String), destroySingleton(java.lang.String) and MergedBeanDefinitionPostProcessor.resetBeanDefinition(java.lang.String) on the given bean and on all bean definitions that have the given bean as parent.

      Parameters:
      beanName - the name of the bean to reset
      See Also:
    • isBeanDefinitionOverridable

      public boolean isBeanDefinitionOverridable(String beanName)
      This implementation returns true if bean definition overriding is generally allowed.
      Specified by:
      isBeanDefinitionOverridable in interface BeanDefinitionRegistry
      Parameters:
      beanName - the name to check
      Returns:
      whether the definition for the given bean name is overridable
      See Also:
    • allowAliasOverriding

      protected boolean allowAliasOverriding()
      Only allows alias overriding if bean definition overriding is allowed.
      Overrides:
      allowAliasOverriding in class org.springframework.core.SimpleAliasRegistry
      See Also:
    • checkForAliasCircle

      protected void checkForAliasCircle(String name, String alias)
      Also checks for an alias overriding a bean definition of the same name.
      Overrides:
      checkForAliasCircle in class org.springframework.core.SimpleAliasRegistry
    • registerSingleton

      public void registerSingleton(String beanName, Object singletonObject) throws IllegalStateException
      Description copied from interface: SingletonBeanRegistry
      Register the given existing object as singleton in the bean registry, under the given bean name.

      The given instance is supposed to be fully initialized; the registry will not perform any initialization callbacks (in particular, it won't call InitializingBean's afterPropertiesSet method). The given instance will not receive any destruction callbacks (like DisposableBean's destroy method) either.

      When running within a full BeanFactory: Register a bean definition instead of an existing instance if your bean is supposed to receive initialization and/or destruction callbacks.

      Typically invoked during registry configuration, but can also be used for runtime registration of singletons. As a consequence, a registry implementation should synchronize singleton access; it will have to do this anyway if it supports a BeanFactory's lazy initialization of singletons.

      Specified by:
      registerSingleton in interface SingletonBeanRegistry
      Overrides:
      registerSingleton in class DefaultSingletonBeanRegistry
      Parameters:
      beanName - the name of the bean
      singletonObject - the existing singleton object
      Throws:
      IllegalStateException
      See Also:
    • destroySingletons

      public void destroySingletons()
      Description copied from interface: ConfigurableBeanFactory
      Destroy all singleton beans in this factory, including inner beans that have been registered as disposable. To be called on shutdown of a factory.

      Any exception that arises during destruction should be caught and logged instead of propagated to the caller of this method.

      Specified by:
      destroySingletons in interface ConfigurableBeanFactory
      Overrides:
      destroySingletons in class DefaultSingletonBeanRegistry
    • destroySingleton

      public void destroySingleton(String beanName)
      Description copied from class: DefaultSingletonBeanRegistry
      Destroy the given bean. Delegates to destroyBean if a corresponding disposable bean instance is found.
      Overrides:
      destroySingleton in class DefaultSingletonBeanRegistry
      Parameters:
      beanName - the name of the bean
      See Also:
    • resolveNamedBean

      public <T> NamedBeanHolder<T> resolveNamedBean(Class<T> requiredType) throws BeansException
      Description copied from interface: AutowireCapableBeanFactory
      Resolve the bean instance that uniquely matches the given object type, if any, including its bean name.

      This is effectively a variant of BeanFactory.getBean(Class) which preserves the bean name of the matching instance.

      Specified by:
      resolveNamedBean in interface AutowireCapableBeanFactory
      Parameters:
      requiredType - type the bean must match; can be an interface or superclass
      Returns:
      the bean name plus bean instance
      Throws:
      NoSuchBeanDefinitionException - if no matching bean was found
      NoUniqueBeanDefinitionException - if more than one matching bean was found
      BeansException - if the bean could not be created
      See Also:
    • resolveDependency

      @Nullable public Object resolveDependency(DependencyDescriptor descriptor, @Nullable String requestingBeanName, @Nullable Set<String> autowiredBeanNames, @Nullable TypeConverter typeConverter) throws BeansException
      Description copied from interface: AutowireCapableBeanFactory
      Resolve the specified dependency against the beans defined in this factory.
      Specified by:
      resolveDependency in interface AutowireCapableBeanFactory
      Parameters:
      descriptor - the descriptor for the dependency (field/method/constructor)
      requestingBeanName - the name of the bean which declares the given dependency
      autowiredBeanNames - a Set that all names of autowired beans (used for resolving the given dependency) are supposed to be added to
      typeConverter - the TypeConverter to use for populating arrays and collections
      Returns:
      the resolved object, or null if none found
      Throws:
      NoSuchBeanDefinitionException - if no matching bean was found
      NoUniqueBeanDefinitionException - if more than one matching bean was found
      BeansException - if dependency resolution failed for any other reason
      See Also:
    • doResolveDependency

      @Nullable public Object doResolveDependency(DependencyDescriptor descriptor, @Nullable String beanName, @Nullable Set<String> autowiredBeanNames, @Nullable TypeConverter typeConverter) throws BeansException
      Throws:
      BeansException
    • findAutowireCandidates

      protected Map<String,Object> findAutowireCandidates(@Nullable String beanName, Class<?> requiredType, DependencyDescriptor descriptor)
      Find bean instances that match the required type. Called during autowiring for the specified bean.
      Parameters:
      beanName - the name of the bean that is about to be wired
      requiredType - the actual type of bean to look for (may be an array component type or collection element type)
      descriptor - the descriptor of the dependency to resolve
      Returns:
      a Map of candidate names and candidate instances that match the required type (never null)
      Throws:
      BeansException - in case of errors
      See Also:
    • determineAutowireCandidate

      @Nullable protected String determineAutowireCandidate(Map<String,Object> candidates, DependencyDescriptor descriptor)
      Determine the autowire candidate in the given set of beans.

      Looks for @Primary and @Priority (in that order).

      Parameters:
      candidates - a Map of candidate names and candidate instances that match the required type, as returned by findAutowireCandidates(java.lang.String, java.lang.Class<?>, org.springframework.beans.factory.config.DependencyDescriptor)
      descriptor - the target dependency to match against
      Returns:
      the name of the autowire candidate, or null if none found
    • determinePrimaryCandidate

      @Nullable protected String determinePrimaryCandidate(Map<String,Object> candidates, Class<?> requiredType)
      Determine the primary candidate in the given set of beans.
      Parameters:
      candidates - a Map of candidate names and candidate instances (or candidate classes if not created yet) that match the required type
      requiredType - the target dependency type to match against
      Returns:
      the name of the primary candidate, or null if none found
      See Also:
    • determineHighestPriorityCandidate

      @Nullable protected String determineHighestPriorityCandidate(Map<String,Object> candidates, Class<?> requiredType)
      Determine the candidate with the highest priority in the given set of beans.

      Based on @jakarta.annotation.Priority. As defined by the related Ordered interface, the lowest value has the highest priority.

      Parameters:
      candidates - a Map of candidate names and candidate instances (or candidate classes if not created yet) that match the required type
      requiredType - the target dependency type to match against
      Returns:
      the name of the candidate with the highest priority, or null if none found
      See Also:
    • isPrimary

      protected boolean isPrimary(String beanName, Object beanInstance)
      Return whether the bean definition for the given bean name has been marked as a primary bean.
      Parameters:
      beanName - the name of the bean
      beanInstance - the corresponding bean instance (can be null)
      Returns:
      whether the given bean qualifies as primary
    • getPriority

      @Nullable protected Integer getPriority(Object beanInstance)
      Return the priority assigned for the given bean instance by the jakarta.annotation.Priority annotation.

      The default implementation delegates to the specified dependency comparator, checking its method if it is an extension of Spring's common OrderComparator - typically, an AnnotationAwareOrderComparator. If no such comparator is present, this implementation returns null.

      Parameters:
      beanInstance - the bean instance to check (can be null)
      Returns:
      the priority assigned to that bean or null if none is set
    • matchesBeanName

      protected boolean matchesBeanName(String beanName, @Nullable String candidateName)
      Determine whether the given candidate name matches the bean name or the aliases stored in this bean definition.
    • toString

      public String toString()
      Overrides:
      toString in class Object
    • writeReplace

      protected Object writeReplace() throws ObjectStreamException
      Throws:
      ObjectStreamException