org.springframework.beans.factory.config

Interface AutowireCapableBeanFactory

All Superinterfaces:

BeanFactory

All Known Subinterfaces:

ConfigurableListableBeanFactory

All Known Implementing Classes:

AbstractAutowireCapableBeanFactory, DefaultListableBeanFactory, XmlBeanFactory

public interface AutowireCapableBeanFactory
extends BeanFactory

Extension of the BeanFactory interface to be implemented by bean factories that are capable of autowiring, provided that they want to expose this functionality for existing bean instances.

This subinterface of BeanFactory is not meant to be used in normal application code: stick to BeanFactory or ListableBeanFactory for typical use cases.

Integration code for other frameworks can leverage this interface to wire and populate existing bean instances that Spring does not control the lifecycle of. This is particularly useful for WebWork Actions and Tapestry Page objects, for example.

Note that this interface is not implemented by org.springframework.context.ApplicationContext facades, as it is hardly ever used by application code. That said, it is available from an application context too, accessible through ApplicationContext's org.springframework.context.ApplicationContext#getAutowireCapableBeanFactory() method.

You may also implement the BeanFactoryAware interface, which exposes the internal BeanFactory even when running in an ApplicationContext, to get access to an AutowireCapableBeanFactory: simply cast the passed-in BeanFactory to AutowireCapableBeanFactory.

Since:

04.12.2003

Author:

Juergen Hoeller

See Also:

BeanFactoryAware, ConfigurableListableBeanFactory, org.springframework.context.ApplicationContext#getAutowireCapableBeanFactory()

Field Summary

Fields

Modifier and Type	Field and Description
static int	AUTOWIRE_AUTODETECT Deprecated. as of Spring 3.0: If you are using mixed autowiring strategies, prefer annotation-based autowiring for clearer demarcation of autowiring needs.
static int	AUTOWIRE_BY_NAME Constant that indicates autowiring bean properties by name (applying to all bean property setters).
static int	AUTOWIRE_BY_TYPE Constant that indicates autowiring bean properties by type (applying to all bean property setters).
static int	AUTOWIRE_CONSTRUCTOR Constant that indicates autowiring the greediest constructor that can be satisfied (involves resolving the appropriate constructor).
static int	AUTOWIRE_NO Constant that indicates no externally defined autowiring.

Fields inherited from interface org.springframework.beans.factory.BeanFactory

FACTORY_BEAN_PREFIX

Method Summary

Modifier and Type	Method and Description
java.lang.Object	applyBeanPostProcessorsAfterInitialization(java.lang.Object existingBean, java.lang.String beanName) Apply BeanPostProcessors to the given existing bean instance, invoking their postProcessAfterInitialization methods.
java.lang.Object	applyBeanPostProcessorsBeforeInitialization(java.lang.Object existingBean, java.lang.String beanName) Apply BeanPostProcessors to the given existing bean instance, invoking their postProcessBeforeInitialization methods.
void	applyBeanPropertyValues(java.lang.Object existingBean, java.lang.String beanName) Apply the property values of the bean definition with the given name to the given bean instance.
java.lang.Object	autowire(java.lang.Class<?> beanClass, int autowireMode, boolean dependencyCheck) Instantiate a new bean instance of the given class with the specified autowire strategy.
void	autowireBean(java.lang.Object existingBean) Populate the given bean instance through applying after-instantiation callbacks and bean property post-processing (e.g.
void	autowireBeanProperties(java.lang.Object existingBean, int autowireMode, boolean dependencyCheck) Autowire the bean properties of the given bean instance by name or type.
java.lang.Object	configureBean(java.lang.Object existingBean, java.lang.String beanName) Configure the given raw bean: autowiring bean properties, applying bean property values, applying factory callbacks such as setBeanName and setBeanFactory, and also applying all bean post processors (including ones which might wrap the given raw bean).
java.lang.Object	createBean(java.lang.Class<?> beanClass, int autowireMode, boolean dependencyCheck) Fully create a new bean instance of the given class with the specified autowire strategy.
<T> T	createBean(java.lang.Class<T> beanClass) Fully create a new bean instance of the given class.
void	destroyBean(java.lang.Object existingBean) Destroy the given bean instance (typically coming from createBean(java.lang.Class<T>)), applying the DisposableBean contract as well as registered DestructionAwareBeanPostProcessors.
java.lang.Object	initializeBean(java.lang.Object existingBean, java.lang.String beanName) Initialize the given raw bean, applying factory callbacks such as setBeanName and setBeanFactory, also applying all bean post processors (including ones which might wrap the given raw bean).
java.lang.Object	resolveDependency(DependencyDescriptor descriptor, java.lang.String requestingBeanName) Resolve the specified dependency against the beans defined in this factory.
java.lang.Object	resolveDependency(DependencyDescriptor descriptor, java.lang.String requestingBeanName, java.util.Set<java.lang.String> autowiredBeanNames, TypeConverter typeConverter) Resolve the specified dependency against the beans defined in this factory.
<T> NamedBeanHolder<T>	resolveNamedBean(java.lang.Class<T> requiredType) Resolve the bean instance that uniquely matches the given object type, if any, including its bean name.

Methods inherited from interface org.springframework.beans.factory.BeanFactory

containsBean, getAliases, getBean, getBean, getBean, getBean, getBean, getType, isPrototype, isSingleton, isTypeMatch, isTypeMatch

Field Detail

AUTOWIRE_NO

static final int AUTOWIRE_NO

Constant that indicates no externally defined autowiring. Note that BeanFactoryAware etc and annotation-driven injection will still be applied.

See Also:

createBean(java.lang.Class<T>), autowire(java.lang.Class<?>, int, boolean), autowireBeanProperties(java.lang.Object, int, boolean), Constant Field Values

AUTOWIRE_BY_NAME

static final int AUTOWIRE_BY_NAME

Constant that indicates autowiring bean properties by name (applying to all bean property setters).

See Also:

createBean(java.lang.Class<T>), autowire(java.lang.Class<?>, int, boolean), autowireBeanProperties(java.lang.Object, int, boolean), Constant Field Values

AUTOWIRE_BY_TYPE

static final int AUTOWIRE_BY_TYPE

Constant that indicates autowiring bean properties by type (applying to all bean property setters).

See Also:

createBean(java.lang.Class<T>), autowire(java.lang.Class<?>, int, boolean), autowireBeanProperties(java.lang.Object, int, boolean), Constant Field Values

AUTOWIRE_CONSTRUCTOR

static final int AUTOWIRE_CONSTRUCTOR

Constant that indicates autowiring the greediest constructor that can be satisfied (involves resolving the appropriate constructor).

See Also:

createBean(java.lang.Class<T>), autowire(java.lang.Class<?>, int, boolean), Constant Field Values

AUTOWIRE_AUTODETECT

@Deprecated
static final int AUTOWIRE_AUTODETECT

Deprecated. as of Spring 3.0: If you are using mixed autowiring strategies, prefer annotation-based autowiring for clearer demarcation of autowiring needs.

Constant that indicates determining an appropriate autowire strategy through introspection of the bean class.

See Also:

createBean(java.lang.Class<T>), autowire(java.lang.Class<?>, int, boolean), Constant Field Values

Method Detail

createBean

<T> T createBean(java.lang.Class<T> beanClass)
          throws BeansException

Fully create a new bean instance of the given class.

Performs full initialization of the bean, including all applicable BeanPostProcessors.

Note: This is intended for creating a fresh instance, populating annotated fields and methods as well as applying all standard bean initialization callbacks. It does not imply traditional by-name or by-type autowiring of properties; use createBean(Class, int, boolean) for those purposes.

Parameters:

beanClass - the class of the bean to create

Returns:

the new bean instance

Throws:

BeansException - if instantiation or wiring failed

autowireBean

void autowireBean(java.lang.Object existingBean)
           throws BeansException

Populate the given bean instance through applying after-instantiation callbacks and bean property post-processing (e.g. for annotation-driven injection).

Note: This is essentially intended for (re-)populating annotated fields and methods, either for new instances or for deserialized instances. It does not imply traditional by-name or by-type autowiring of properties; use autowireBeanProperties(java.lang.Object, int, boolean) for those purposes.

Parameters:

existingBean - the existing bean instance

Throws:

BeansException - if wiring failed

configureBean

java.lang.Object configureBean(java.lang.Object existingBean,
                               java.lang.String beanName)
                        throws BeansException

Configure the given raw bean: autowiring bean properties, applying bean property values, applying factory callbacks such as setBeanName and setBeanFactory, and also applying all bean post processors (including ones which might wrap the given raw bean).

This is effectively a superset of what initializeBean(java.lang.Object, java.lang.String) provides, fully applying the configuration specified by the corresponding bean definition. Note: This method requires a bean definition for the given name!

Parameters:

existingBean - the existing bean instance

beanName - the name of the bean, to be passed to it if necessary (a bean definition of that name has to be available)

Returns:

the bean instance to use, either the original or a wrapped one

Throws:

NoSuchBeanDefinitionException - if there is no bean definition with the given name

BeansException - if the initialization failed

See Also:

initializeBean(java.lang.Object, java.lang.String)

createBean

java.lang.Object createBean(java.lang.Class<?> beanClass,
                            int autowireMode,
                            boolean dependencyCheck)
                     throws BeansException

Fully create a new bean instance of the given class with the specified autowire strategy. All constants defined in this interface are supported here.

Performs full initialization of the bean, including all applicable BeanPostProcessors. This is effectively a superset of what autowire(java.lang.Class<?>, int, boolean) provides, adding initializeBean(java.lang.Object, java.lang.String) behavior.

Parameters:

beanClass - the class of the bean to create

autowireMode - by name or type, using the constants in this interface

dependencyCheck - whether to perform a dependency check for objects (not applicable to autowiring a constructor, thus ignored there)

Returns:

the new bean instance

Throws:

BeansException - if instantiation or wiring failed

See Also:

AUTOWIRE_NO, AUTOWIRE_BY_NAME, AUTOWIRE_BY_TYPE, AUTOWIRE_CONSTRUCTOR

autowire

java.lang.Object autowire(java.lang.Class<?> beanClass,
                          int autowireMode,
                          boolean dependencyCheck)
                   throws BeansException

Instantiate a new bean instance of the given class with the specified autowire strategy. All constants defined in this interface are supported here. Can also be invoked with AUTOWIRE_NO in order to just apply before-instantiation callbacks (e.g. for annotation-driven injection).

Does not apply standard BeanPostProcessors callbacks or perform any further initialization of the bean. This interface offers distinct, fine-grained operations for those purposes, for example initializeBean(java.lang.Object, java.lang.String). However, InstantiationAwareBeanPostProcessor callbacks are applied, if applicable to the construction of the instance.

Parameters:

beanClass - the class of the bean to instantiate

autowireMode - by name or type, using the constants in this interface

dependencyCheck - whether to perform a dependency check for object references in the bean instance (not applicable to autowiring a constructor, thus ignored there)

Returns:

the new bean instance

Throws:

BeansException - if instantiation or wiring failed

See Also:

AUTOWIRE_NO, AUTOWIRE_BY_NAME, AUTOWIRE_BY_TYPE, AUTOWIRE_CONSTRUCTOR, AUTOWIRE_AUTODETECT, initializeBean(java.lang.Object, java.lang.String), applyBeanPostProcessorsBeforeInitialization(java.lang.Object, java.lang.String), applyBeanPostProcessorsAfterInitialization(java.lang.Object, java.lang.String)

autowireBeanProperties

void autowireBeanProperties(java.lang.Object existingBean,
                            int autowireMode,
                            boolean dependencyCheck)
                     throws BeansException

Autowire the bean properties of the given bean instance by name or type. Can also be invoked with AUTOWIRE_NO in order to just apply after-instantiation callbacks (e.g. for annotation-driven injection).

Does not apply standard BeanPostProcessors callbacks or perform any further initialization of the bean. This interface offers distinct, fine-grained operations for those purposes, for example initializeBean(java.lang.Object, java.lang.String). However, InstantiationAwareBeanPostProcessor callbacks are applied, if applicable to the configuration of the instance.

Parameters:

existingBean - the existing bean instance

autowireMode - by name or type, using the constants in this interface

dependencyCheck - whether to perform a dependency check for object references in the bean instance

Throws:

BeansException - if wiring failed

See Also:

AUTOWIRE_BY_NAME, AUTOWIRE_BY_TYPE, AUTOWIRE_NO

applyBeanPropertyValues

void applyBeanPropertyValues(java.lang.Object existingBean,
                             java.lang.String beanName)
                      throws BeansException

Apply the property values of the bean definition with the given name to the given bean instance. The bean definition can either define a fully self-contained bean, reusing its property values, or just property values meant to be used for existing bean instances.

This method does not autowire bean properties; it just applies explicitly defined property values. Use the autowireBeanProperties(java.lang.Object, int, boolean) method to autowire an existing bean instance. Note: This method requires a bean definition for the given name!

Does not apply standard BeanPostProcessors callbacks or perform any further initialization of the bean. This interface offers distinct, fine-grained operations for those purposes, for example initializeBean(java.lang.Object, java.lang.String). However, InstantiationAwareBeanPostProcessor callbacks are applied, if applicable to the configuration of the instance.

Parameters:

existingBean - the existing bean instance

beanName - the name of the bean definition in the bean factory (a bean definition of that name has to be available)

Throws:

NoSuchBeanDefinitionException - if there is no bean definition with the given name

BeansException - if applying the property values failed

See Also:

autowireBeanProperties(java.lang.Object, int, boolean)

initializeBean

java.lang.Object initializeBean(java.lang.Object existingBean,
                                java.lang.String beanName)
                         throws BeansException

Initialize the given raw bean, applying factory callbacks such as setBeanName and setBeanFactory, also applying all bean post processors (including ones which might wrap the given raw bean).

Note that no bean definition of the given name has to exist in the bean factory. The passed-in bean name will simply be used for callbacks but not checked against the registered bean definitions.

Parameters:

existingBean - the existing bean instance

beanName - the name of the bean, to be passed to it if necessary (only passed to BeanPostProcessors)

Returns:

the bean instance to use, either the original or a wrapped one

Throws:

BeansException - if the initialization failed

applyBeanPostProcessorsBeforeInitialization

java.lang.Object applyBeanPostProcessorsBeforeInitialization(java.lang.Object existingBean,
                                                             java.lang.String beanName)
                                                      throws BeansException

Apply BeanPostProcessors to the given existing bean instance, invoking their postProcessBeforeInitialization methods. The returned bean instance may be a wrapper around the original.

Parameters:

existingBean - the new bean instance

beanName - the name of the bean

Returns:

the bean instance to use, either the original or a wrapped one

Throws:

BeansException - if any post-processing failed

See Also:

BeanPostProcessor.postProcessBeforeInitialization(java.lang.Object, java.lang.String)

applyBeanPostProcessorsAfterInitialization

java.lang.Object applyBeanPostProcessorsAfterInitialization(java.lang.Object existingBean,
                                                            java.lang.String beanName)
                                                     throws BeansException

Apply BeanPostProcessors to the given existing bean instance, invoking their postProcessAfterInitialization methods. The returned bean instance may be a wrapper around the original.

Parameters:

existingBean - the new bean instance

beanName - the name of the bean

Returns:

the bean instance to use, either the original or a wrapped one

Throws:

BeansException - if any post-processing failed

See Also:

BeanPostProcessor.postProcessAfterInitialization(java.lang.Object, java.lang.String)

destroyBean

void destroyBean(java.lang.Object existingBean)

Destroy the given bean instance (typically coming from createBean(java.lang.Class<T>)), applying the DisposableBean contract as well as registered DestructionAwareBeanPostProcessors.

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

Parameters:

existingBean - the bean instance to destroy

resolveNamedBean

<T> NamedBeanHolder<T> resolveNamedBean(java.lang.Class<T> requiredType)
                                 throws BeansException

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.

Parameters:

requiredType - type the bean must match; can be an interface or superclass. null is disallowed.

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

Since:

4.3.3

See Also:

BeanFactory.getBean(Class)

resolveDependency

java.lang.Object resolveDependency(DependencyDescriptor descriptor,
                                   java.lang.String requestingBeanName)
                            throws BeansException

Resolve the specified dependency against the beans defined in this factory.

Parameters:

descriptor - the descriptor for the dependency (field/method/constructor)

requestingBeanName - the name of the bean which declares the given dependency

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

Since:

2.5

See Also:

resolveDependency(DependencyDescriptor, String, Set, TypeConverter)

resolveDependency

java.lang.Object resolveDependency(DependencyDescriptor descriptor,
                                   java.lang.String requestingBeanName,
                                   java.util.Set<java.lang.String> autowiredBeanNames,
                                   TypeConverter typeConverter)
                            throws BeansException

Resolve the specified dependency against the beans defined in this factory.

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

Since:

2.5

See Also:

DependencyDescriptor