org.springframework.beans.factory.support

Class AbstractBeanFactory

java.lang.Object

org.springframework.core.SimpleAliasRegistry

org.springframework.beans.factory.support.DefaultSingletonBeanRegistry

org.springframework.beans.factory.support.FactoryBeanRegistrySupport

org.springframework.beans.factory.support.AbstractBeanFactory

All Implemented Interfaces:

BeanFactory, ConfigurableBeanFactory, SingletonBeanRegistry, HierarchicalBeanFactory, org.springframework.core.AliasRegistry

Direct Known Subclasses:

AbstractAutowireCapableBeanFactory

public abstract class AbstractBeanFactory
extends FactoryBeanRegistrySupport
implements ConfigurableBeanFactory

Abstract base class for BeanFactory implementations, providing the full capabilities of the ConfigurableBeanFactory SPI. Does not assume a listable bean factory: can therefore also be used as base class for bean factory implementations which obtain bean definitions from some backend resource (where bean definition access is an expensive operation).

This class provides a singleton cache (through its base class DefaultSingletonBeanRegistry, singleton/prototype determination, FactoryBean handling, aliases, bean definition merging for child bean definitions, and bean destruction (DisposableBean interface, custom destroy methods). Furthermore, it can manage a bean factory hierarchy (delegating to the parent in case of an unknown bean), through implementing the HierarchicalBeanFactory interface.

The main template methods to be implemented by subclasses are getBeanDefinition(java.lang.String) and createBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[]), retrieving a bean definition for a given bean name and creating a bean instance for a given bean definition, respectively. Default implementations of those operations can be found in DefaultListableBeanFactory and AbstractAutowireCapableBeanFactory.

Since:

15 April 2001

Author:

Rod Johnson, Juergen Hoeller, Costin Leau, Chris Beams

See Also:

getBeanDefinition(java.lang.String), createBean(java.lang.String, org.springframework.beans.factory.support.RootBeanDefinition, java.lang.Object[]), AbstractAutowireCapableBeanFactory.createBean(java.lang.Class<T>), DefaultListableBeanFactory.getBeanDefinition(java.lang.String)

Field Summary

Fields inherited from class org.springframework.beans.factory.support.DefaultSingletonBeanRegistry

logger, NULL_OBJECT

Fields inherited from interface org.springframework.beans.factory.config.ConfigurableBeanFactory

SCOPE_PROTOTYPE, SCOPE_SINGLETON

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

FACTORY_BEAN_PREFIX

Constructor Summary

Constructors

Constructor and Description
AbstractBeanFactory() Create a new AbstractBeanFactory.
AbstractBeanFactory(BeanFactory parentBeanFactory) Create a new AbstractBeanFactory with the given parent.

Method Summary

Methods

Modifier and Type	Method and Description
void	addBeanPostProcessor(BeanPostProcessor beanPostProcessor) Add a new BeanPostProcessor that will get applied to beans created by this factory.
void	addEmbeddedValueResolver(org.springframework.util.StringValueResolver valueResolver) Add a String resolver for embedded values such as annotation attributes.
void	addPropertyEditorRegistrar(PropertyEditorRegistrar registrar) Add a PropertyEditorRegistrar to be applied to all bean creation processes.
protected void	afterPrototypeCreation(String beanName) Callback after prototype creation.
protected void	beforePrototypeCreation(String beanName) Callback before prototype creation.
protected void	checkMergedBeanDefinition(RootBeanDefinition mbd, String beanName, Object[] args) Check the given merged bean definition, potentially throwing validation exceptions.
protected void	clearMergedBeanDefinition(String beanName) Remove the merged bean definition for the specified bean, recreating it on next access.
boolean	containsBean(String name) Does this bean factory contain a bean definition or externally registered singleton instance with the given name?
protected abstract boolean	containsBeanDefinition(String beanName) Check if this bean factory contains a bean definition with the given name.
boolean	containsLocalBean(String name) Return whether the local bean factory contains a bean of the given name, ignoring beans defined in ancestor contexts.
void	copyConfigurationFrom(ConfigurableBeanFactory otherFactory) Copy all relevant configuration from the given other factory.
void	copyRegisteredEditorsTo(PropertyEditorRegistry registry) Initialize the given PropertyEditorRegistry with the custom editors that have been registered with this BeanFactory.
protected abstract Object	createBean(String beanName, RootBeanDefinition mbd, Object[] args) Create a bean instance for the given bean definition.
void	destroyBean(String beanName, Object beanInstance) Destroy the given bean instance (usually a prototype instance obtained from this factory) according to its bean definition.
protected void	destroyBean(String beanName, Object beanInstance, RootBeanDefinition mbd) Destroy the given bean instance (usually a prototype instance obtained from this factory) according to the given bean definition.
void	destroyScopedBean(String beanName) Destroy the specified scoped bean in the current target scope, if any.
protected <T> T	doGetBean(String name, Class<T> requiredType, Object[] args, boolean typeCheckOnly) Return an instance, which may be shared or independent, of the specified bean.
protected Object	evaluateBeanDefinitionString(String value, BeanDefinition beanDefinition) Evaluate the given String as contained in a bean definition, potentially resolving it as an expression.
AccessControlContext	getAccessControlContext() Delegate the creation of the access control context to the SecurityContextProvider.
String[]	getAliases(String name) Return the aliases for the given bean name, if any.
Object	getBean(String name) Return an instance, which may be shared or independent, of the specified bean.
<T> T	getBean(String name, Class<T> requiredType) Return an instance, which may be shared or independent, of the specified bean.
<T> T	getBean(String name, Class<T> requiredType, Object... args) Return an instance, which may be shared or independent, of the specified bean.
Object	getBean(String name, Object... args) Return an instance, which may be shared or independent, of the specified bean.
ClassLoader	getBeanClassLoader() Return this factory's class loader for loading bean classes.
protected abstract BeanDefinition	getBeanDefinition(String beanName) Return the bean definition for the given bean name.
BeanExpressionResolver	getBeanExpressionResolver() Return the resolution strategy for expressions in bean definition values.
int	getBeanPostProcessorCount() Return the current number of registered BeanPostProcessors, if any.
List<BeanPostProcessor>	getBeanPostProcessors() Return the list of BeanPostProcessors that will get applied to beans created with this factory.
org.springframework.core.convert.ConversionService	getConversionService() Return the associated ConversionService, if any.
Map<Class<?>,Class<? extends PropertyEditor>>	getCustomEditors() Return the map of custom editors, with Classes as keys and PropertyEditor classes as values.
protected TypeConverter	getCustomTypeConverter() Return the custom TypeConverter to use, if any.
BeanDefinition	getMergedBeanDefinition(String name) Return a 'merged' BeanDefinition for the given bean name, merging a child bean definition with its parent if necessary.
protected RootBeanDefinition	getMergedBeanDefinition(String beanName, BeanDefinition bd) Return a RootBeanDefinition for the given top-level bean, by merging with the parent if the given bean's definition is a child bean definition.
protected RootBeanDefinition	getMergedBeanDefinition(String beanName, BeanDefinition bd, BeanDefinition containingBd) Return a RootBeanDefinition for the given bean, by merging with the parent if the given bean's definition is a child bean definition.
protected RootBeanDefinition	getMergedLocalBeanDefinition(String beanName) Return a merged RootBeanDefinition, traversing the parent bean definition if the specified bean corresponds to a child bean definition.
protected Object	getObjectForBeanInstance(Object beanInstance, String name, String beanName, RootBeanDefinition mbd) Get the object for the given bean instance, either the bean instance itself or its created object in case of a FactoryBean.
BeanFactory	getParentBeanFactory() Return the parent bean factory, or null if there is none.
Set<PropertyEditorRegistrar>	getPropertyEditorRegistrars() Return the set of PropertyEditorRegistrars.
Scope	getRegisteredScope(String scopeName) Return the Scope implementation for the given scope name, if any.
String[]	getRegisteredScopeNames() Return the names of all currently registered scopes.
ClassLoader	getTempClassLoader() Return the temporary ClassLoader to use for type matching purposes, if any.
Class<?>	getType(String name) Determine the type of the bean with the given name.
TypeConverter	getTypeConverter() Obtain a type converter as used by this BeanFactory.
protected Class<?>	getTypeForFactoryBean(String beanName, RootBeanDefinition mbd) Determine the bean type for the given FactoryBean definition, as far as possible.
protected boolean	hasDestructionAwareBeanPostProcessors() Return whether this factory holds a DestructionAwareBeanPostProcessor that will get applied to singleton beans on shutdown.
protected boolean	hasInstantiationAwareBeanPostProcessors() Return whether this factory holds a InstantiationAwareBeanPostProcessor that will get applied to singleton beans on shutdown.
protected void	initBeanWrapper(BeanWrapper bw) Initialize the given BeanWrapper with the custom editors registered with this factory.
boolean	isActuallyInCreation(String beanName)
protected boolean	isBeanEligibleForMetadataCaching(String beanName) Determine whether the specified bean is eligible for having its bean definition metadata cached.
boolean	isBeanNameInUse(String beanName) Determine whether the given bean name is already in use within this factory, i.e.
boolean	isCacheBeanMetadata() Return whether to cache bean metadata such as given bean definitions (in merged fashion) and resolved bean classes.
boolean	isFactoryBean(String name) Determine whether the bean with the given name is a FactoryBean.
protected boolean	isFactoryBean(String beanName, RootBeanDefinition mbd) Check whether the given bean is defined as a FactoryBean.
boolean	isPrototype(String name) Is this bean a prototype? That is, will BeanFactory.getBean(java.lang.String) always return independent instances?
protected boolean	isPrototypeCurrentlyInCreation(String beanName) Return whether the specified prototype bean is currently in creation (within the current thread).
boolean	isSingleton(String name) Is this bean a shared singleton? That is, will BeanFactory.getBean(java.lang.String) always return the same instance?
boolean	isTypeMatch(String name, Class<?> targetType) Check whether the bean with the given name matches the specified type.
protected void	markBeanAsCreated(String beanName) Mark the specified bean as already created (or about to be created).
protected String	originalBeanName(String name) Determine the original bean name, resolving locally defined aliases to canonical names.
protected Class<?>	predictBeanType(String beanName, RootBeanDefinition mbd, Class<?>... typesToMatch) Predict the eventual bean type (of the processed bean instance) for the specified bean.
void	registerCustomEditor(Class<?> requiredType, Class<? extends PropertyEditor> propertyEditorClass) Register the given custom property editor for all properties of the given type.
protected void	registerCustomEditors(PropertyEditorRegistry registry) Initialize the given PropertyEditorRegistry with the custom editors that have been registered with this BeanFactory.
protected void	registerDisposableBeanIfNecessary(String beanName, Object bean, RootBeanDefinition mbd) Add the given bean to the list of disposable beans in this factory, registering its DisposableBean interface and/or the given destroy method to be called on factory shutdown (if applicable).
void	registerScope(String scopeName, Scope scope) Register the given scope, backed by the given Scope implementation.
protected boolean	removeSingletonIfCreatedForTypeCheckOnly(String beanName) Remove the singleton instance (if any) for the given bean name, but only if it hasn't been used for other purposes than type checking.
protected boolean	requiresDestruction(Object bean, RootBeanDefinition mbd) Determine whether the given bean requires destruction on shutdown.
protected Class<?>	resolveBeanClass(RootBeanDefinition mbd, String beanName, Class<?>... typesToMatch) Resolve the bean class for the specified bean definition, resolving a bean class name into a Class reference (if necessary) and storing the resolved Class in the bean definition for further use.
String	resolveEmbeddedValue(String value) Resolve the given embedded value, e.g.
void	setBeanClassLoader(ClassLoader beanClassLoader) Set the class loader to use for loading bean classes.
void	setBeanExpressionResolver(BeanExpressionResolver resolver) Specify the resolution strategy for expressions in bean definition values.
void	setCacheBeanMetadata(boolean cacheBeanMetadata) Set whether to cache bean metadata such as given bean definitions (in merged fashion) and resolved bean classes.
void	setConversionService(org.springframework.core.convert.ConversionService conversionService) Specify a Spring 3.0 ConversionService to use for converting property values, as an alternative to JavaBeans PropertyEditors.
void	setParentBeanFactory(BeanFactory parentBeanFactory) Set the parent of this bean factory.
void	setSecurityContextProvider(SecurityContextProvider securityProvider) Set the security context provider for this bean factory.
void	setTempClassLoader(ClassLoader tempClassLoader) Specify a temporary ClassLoader to use for type matching purposes.
void	setTypeConverter(TypeConverter typeConverter) Set a custom type converter that this BeanFactory should use for converting bean property values, constructor argument values, etc.
protected String	transformedBeanName(String name) Return the bean name, stripping out the factory dereference prefix if necessary, and resolving aliases to canonical names.

Methods inherited from class org.springframework.beans.factory.support.FactoryBeanRegistrySupport

getCachedObjectForFactoryBean, getFactoryBean, getObjectFromFactoryBean, getTypeForFactoryBean, postProcessObjectFromFactoryBean, removeSingleton

Methods inherited from class org.springframework.beans.factory.support.DefaultSingletonBeanRegistry

addSingleton, addSingletonFactory, afterSingletonCreation, beforeSingletonCreation, containsSingleton, destroyBean, destroySingleton, destroySingletons, getDependenciesForBean, getDependentBeans, getSingleton, getSingleton, getSingleton, getSingletonCount, getSingletonMutex, getSingletonNames, hasDependentBean, isCurrentlyInCreation, isSingletonCurrentlyInCreation, onSuppressedException, registerContainedBean, registerDependentBean, registerDisposableBean, registerSingleton, setCurrentlyInCreation

Methods inherited from class org.springframework.core.SimpleAliasRegistry

allowAliasOverriding, canonicalName, checkForAliasCircle, isAlias, registerAlias, removeAlias, resolveAliases

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.beans.factory.config.ConfigurableBeanFactory

destroySingletons, getDependenciesForBean, getDependentBeans, isCurrentlyInCreation, registerAlias, registerDependentBean, resolveAliases, setCurrentlyInCreation

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

getBean

Methods inherited from interface org.springframework.beans.factory.config.SingletonBeanRegistry

containsSingleton, getSingleton, getSingletonCount, getSingletonNames, registerSingleton

Constructor Detail

AbstractBeanFactory

public AbstractBeanFactory()

Create a new AbstractBeanFactory.

AbstractBeanFactory

public AbstractBeanFactory(BeanFactory parentBeanFactory)

Create a new AbstractBeanFactory with the given parent.

Parameters:

parentBeanFactory - parent bean factory, or null if none

See Also:

getBean(java.lang.String)

Method Detail

getBean

public Object getBean(String name)
               throws BeansException

Description copied from interface: BeanFactory

Return an instance, which may be shared or independent, of the specified bean.

This method allows a Spring BeanFactory to be used as a replacement for the Singleton or Prototype design pattern. Callers may retain references to returned objects in the case of Singleton beans.

Translates aliases back to the corresponding canonical bean name. Will ask the parent factory if the bean cannot be found in this factory instance.

Specified by:

getBean in interface BeanFactory

Parameters:

name - the name of the bean to retrieve

Returns:

an instance of the bean

Throws:

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

BeansException - if the bean could not be obtained

getBean

public <T> T getBean(String name,
            Class<T> requiredType)
          throws BeansException

Description copied from interface: BeanFactory

Return an instance, which may be shared or independent, of the specified bean.

Behaves the same as BeanFactory.getBean(String), but provides a measure of type safety by throwing a BeanNotOfRequiredTypeException if the bean is not of the required type. This means that ClassCastException can't be thrown on casting the result correctly, as can happen with BeanFactory.getBean(String).

Translates aliases back to the corresponding canonical bean name. Will ask the parent factory if the bean cannot be found in this factory instance.

Specified by:

getBean in interface BeanFactory

Parameters:

name - the name of the bean to retrieve

requiredType - type the bean must match. Can be an interface or superclass of the actual class, or null for any match. For example, if the value is Object.class, this method will succeed whatever the class of the returned instance.

Returns:

an instance of the bean

Throws:

NoSuchBeanDefinitionException - if there is no such bean definition

BeanNotOfRequiredTypeException - if the bean is not of the required type

BeansException - if the bean could not be created

getBean

public Object getBean(String name,
             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.

Specified by:

getBean in interface BeanFactory

Parameters:

name - the name of the bean to retrieve

args - arguments to use if creating a prototype using explicit arguments to a static factory method. It is invalid to use a non-null args value in any other case.

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

getBean

public <T> T getBean(String name,
            Class<T> requiredType,
            Object... args)
          throws BeansException

Return an instance, which may be shared or independent, of the specified bean.

Parameters:

name - the name of the bean to retrieve

requiredType - the required type of the bean to retrieve

args - arguments to use if creating a prototype using explicit arguments to a static factory method. It is invalid to use a non-null args value in any other case.

Returns:

an instance of the bean

Throws:

BeansException - if the bean could not be created

doGetBean

protected <T> T doGetBean(String name,
              Class<T> requiredType,
              Object[] args,
              boolean typeCheckOnly)
               throws BeansException

Return an instance, which may be shared or independent, of the specified bean.

Parameters:

name - the name of the bean to retrieve

requiredType - the required type of the bean to retrieve

args - arguments to use if creating a prototype using explicit arguments to a static factory method. It is invalid to use a non-null args value in any other case.

typeCheckOnly - whether the instance is obtained for a type check, not for actual use

Returns:

an instance of the bean

Throws:

BeansException - if the bean could not be created

containsBean

public boolean containsBean(String name)

Description copied from interface: BeanFactory

Does this bean factory contain a bean definition or externally registered singleton instance with the given name?

If the given name is an alias, it will be translated back to the corresponding canonical bean name.

If this factory is hierarchical, will ask any parent factory if the bean cannot be found in this factory instance.

If a bean definition or singleton instance matching the given name is found, this method will return true whether the named bean definition is concrete or abstract, lazy or eager, in scope or not. Therefore, note that a true return value from this method does not necessarily indicate that BeanFactory.getBean(java.lang.String) will be able to obtain an instance for the same name.

Specified by:

containsBean in interface BeanFactory

Parameters:

name - the name of the bean to query

Returns:

whether a bean with the given name is present

isSingleton

public boolean isSingleton(String name)
                    throws NoSuchBeanDefinitionException

Description copied from interface: BeanFactory

Is this bean a shared singleton? That is, will BeanFactory.getBean(java.lang.String) always return the same instance?

Note: This method returning false does not clearly indicate independent instances. It indicates non-singleton instances, which may correspond to a scoped bean as well. Use the BeanFactory.isPrototype(java.lang.String) operation to explicitly check for independent instances.

Translates aliases back to the corresponding canonical bean name. Will ask the parent factory if the bean cannot be found in this factory instance.

Specified by:

isSingleton in interface BeanFactory

Parameters:

name - the name of the bean to query

Returns:

whether this bean corresponds to a singleton instance

Throws:

NoSuchBeanDefinitionException - if there is no bean with the given name

See Also:

BeanFactory.getBean(java.lang.String), BeanFactory.isPrototype(java.lang.String)

isPrototype

public boolean isPrototype(String name)
                    throws NoSuchBeanDefinitionException

Description copied from interface: BeanFactory

Is this bean a prototype? That is, will BeanFactory.getBean(java.lang.String) always return independent instances?

Note: This method returning false does not clearly indicate a singleton object. It indicates non-independent instances, which may correspond to a scoped bean as well. Use the BeanFactory.isSingleton(java.lang.String) operation to explicitly check for a shared singleton instance.

Translates aliases back to the corresponding canonical bean name. Will ask the parent factory if the bean cannot be found in this factory instance.

Specified by:

isPrototype in interface BeanFactory

Parameters:

name - the name of the bean to query

Returns:

whether this bean will always deliver independent instances

Throws:

NoSuchBeanDefinitionException - if there is no bean with the given name

See Also:

BeanFactory.getBean(java.lang.String), BeanFactory.isSingleton(java.lang.String)

isTypeMatch

public boolean isTypeMatch(String name,
                  Class<?> targetType)
                    throws NoSuchBeanDefinitionException

Description copied from interface: BeanFactory

Check whether the bean with the given name matches the specified type. More specifically, check whether a BeanFactory.getBean(java.lang.String) call for the given name would return an object that is assignable to the specified target type.

Translates aliases back to the corresponding canonical bean name. Will ask the parent factory if the bean cannot be found in this factory instance.

Specified by:

isTypeMatch in interface BeanFactory

Parameters:

name - the name of the bean to query

targetType - the type to match against

Returns:

true if the bean type matches, false if it doesn't match or cannot be determined yet

Throws:

NoSuchBeanDefinitionException - if there is no bean with the given name

See Also:

BeanFactory.getBean(java.lang.String), BeanFactory.getType(java.lang.String)

getType

public Class<?> getType(String name)
                 throws NoSuchBeanDefinitionException

Description copied from interface: BeanFactory

Determine the type of the bean with the given name. More specifically, determine the type of object that BeanFactory.getBean(java.lang.String) would return for the given name.

For a FactoryBean, return the type of object that the FactoryBean creates, as exposed by FactoryBean.getObjectType().

Translates aliases back to the corresponding canonical bean name. Will ask the parent factory if the bean cannot be found in this factory instance.

Specified by:

getType in interface BeanFactory

Parameters:

name - the name of the bean to query

Returns:

the type of the bean, or null if not determinable

Throws:

NoSuchBeanDefinitionException - if there is no bean with the given name

See Also:

BeanFactory.getBean(java.lang.String), BeanFactory.isTypeMatch(java.lang.String, java.lang.Class<?>)

getAliases

public String[] getAliases(String name)

Description copied from interface: BeanFactory

Return the aliases for the given bean name, if any. All of those aliases point to the same bean when used in a BeanFactory.getBean(java.lang.String) call.

If the given name is an alias, the corresponding original bean name and other aliases (if any) will be returned, with the original bean name being the first element in the array.

Will ask the parent factory if the bean cannot be found in this factory instance.

Specified by:

getAliases in interface BeanFactory

Specified by:

getAliases in interface org.springframework.core.AliasRegistry

Overrides:

getAliases in class org.springframework.core.SimpleAliasRegistry

Parameters:

name - the bean name to check for aliases

Returns:

the aliases, or an empty array if none

See Also:

BeanFactory.getBean(java.lang.String)

getParentBeanFactory

public BeanFactory getParentBeanFactory()

Description copied from interface: HierarchicalBeanFactory

Return the parent bean factory, or null if there is none.

Specified by:

getParentBeanFactory in interface HierarchicalBeanFactory

containsLocalBean

public boolean containsLocalBean(String name)

Description copied from interface: HierarchicalBeanFactory

Return whether the local bean factory contains a bean of the given name, ignoring beans defined in ancestor contexts.

This is an alternative to containsBean, ignoring a bean of the given name from an ancestor bean factory.

Specified by:

containsLocalBean in interface HierarchicalBeanFactory

Parameters:

name - the name of the bean to query

Returns:

whether a bean with the given name is defined in the local factory

See Also:

BeanFactory.containsBean(java.lang.String)

setParentBeanFactory

public void setParentBeanFactory(BeanFactory parentBeanFactory)

Description copied from interface: ConfigurableBeanFactory

Set the parent of this bean factory.

Note that the parent cannot be changed: It should only be set outside a constructor if it isn't available at the time of factory instantiation.

Specified by:

setParentBeanFactory in interface ConfigurableBeanFactory

Parameters:

parentBeanFactory - the parent BeanFactory

See Also:

HierarchicalBeanFactory.getParentBeanFactory()

setBeanClassLoader

public void setBeanClassLoader(ClassLoader beanClassLoader)

Description copied from interface: ConfigurableBeanFactory

Set the class loader to use for loading bean classes. Default is the thread context class loader.

Note that this class loader will only apply to bean definitions that do not carry a resolved bean class yet. This is the case as of Spring 2.0 by default: Bean definitions only carry bean class names, to be resolved once the factory processes the bean definition.

Specified by:

setBeanClassLoader in interface ConfigurableBeanFactory

Parameters:

beanClassLoader - the class loader to use, or null to suggest the default class loader

getBeanClassLoader

public ClassLoader getBeanClassLoader()

Description copied from interface: ConfigurableBeanFactory

Return this factory's class loader for loading bean classes.

Specified by:

getBeanClassLoader in interface ConfigurableBeanFactory

setTempClassLoader

public void setTempClassLoader(ClassLoader tempClassLoader)

Description copied from interface: ConfigurableBeanFactory

Specify a temporary ClassLoader to use for type matching purposes. Default is none, simply using the standard bean ClassLoader.

A temporary ClassLoader is usually just specified if load-time weaving is involved, to make sure that actual bean classes are loaded as lazily as possible. The temporary loader is then removed once the BeanFactory completes its bootstrap phase.

Specified by:

setTempClassLoader in interface ConfigurableBeanFactory

getTempClassLoader

public ClassLoader getTempClassLoader()

Description copied from interface: ConfigurableBeanFactory

Return the temporary ClassLoader to use for type matching purposes, if any.

Specified by:

getTempClassLoader in interface ConfigurableBeanFactory

setCacheBeanMetadata

public void setCacheBeanMetadata(boolean cacheBeanMetadata)

Description copied from interface: ConfigurableBeanFactory

Set whether to cache bean metadata such as given bean definitions (in merged fashion) and resolved bean classes. Default is on.

Turn this flag off to enable hot-refreshing of bean definition objects and in particular bean classes. If this flag is off, any creation of a bean instance will re-query the bean class loader for newly resolved classes.

Specified by:

setCacheBeanMetadata in interface ConfigurableBeanFactory

isCacheBeanMetadata

public boolean isCacheBeanMetadata()

Description copied from interface: ConfigurableBeanFactory

Return whether to cache bean metadata such as given bean definitions (in merged fashion) and resolved bean classes.

Specified by:

isCacheBeanMetadata in interface ConfigurableBeanFactory

setBeanExpressionResolver

public void setBeanExpressionResolver(BeanExpressionResolver resolver)

Description copied from interface: ConfigurableBeanFactory

Specify the resolution strategy for expressions in bean definition values.

There is no expression support active in a BeanFactory by default. An ApplicationContext will typically set a standard expression strategy here, supporting "#{...}" expressions in a Unified EL compatible style.

Specified by:

setBeanExpressionResolver in interface ConfigurableBeanFactory

getBeanExpressionResolver

public BeanExpressionResolver getBeanExpressionResolver()

Description copied from interface: ConfigurableBeanFactory

Return the resolution strategy for expressions in bean definition values.

Specified by:

getBeanExpressionResolver in interface ConfigurableBeanFactory

setConversionService

public void setConversionService(org.springframework.core.convert.ConversionService conversionService)

Description copied from interface: ConfigurableBeanFactory

Specify a Spring 3.0 ConversionService to use for converting property values, as an alternative to JavaBeans PropertyEditors.

Specified by:

setConversionService in interface ConfigurableBeanFactory

getConversionService

public org.springframework.core.convert.ConversionService getConversionService()

Description copied from interface: ConfigurableBeanFactory

Return the associated ConversionService, if any.

Specified by:

getConversionService in interface ConfigurableBeanFactory

addPropertyEditorRegistrar

public void addPropertyEditorRegistrar(PropertyEditorRegistrar registrar)

Description copied from interface: ConfigurableBeanFactory

Add a PropertyEditorRegistrar to be applied to all bean creation processes.

Such a registrar creates new PropertyEditor instances and registers them on the given registry, fresh for each bean creation attempt. This avoids the need for synchronization on custom editors; hence, it is generally preferable to use this method instead of ConfigurableBeanFactory.registerCustomEditor(java.lang.Class<?>, java.lang.Class<? extends java.beans.PropertyEditor>).

Specified by:

addPropertyEditorRegistrar in interface ConfigurableBeanFactory

Parameters:

registrar - the PropertyEditorRegistrar to register

getPropertyEditorRegistrars

public Set<PropertyEditorRegistrar> getPropertyEditorRegistrars()

Return the set of PropertyEditorRegistrars.

registerCustomEditor

public void registerCustomEditor(Class<?> requiredType,
                        Class<? extends PropertyEditor> propertyEditorClass)

Description copied from interface: ConfigurableBeanFactory

Register the given custom property editor for all properties of the given type. To be invoked during factory configuration.

Note that this method will register a shared custom editor instance; access to that instance will be synchronized for thread-safety. It is generally preferable to use ConfigurableBeanFactory.addPropertyEditorRegistrar(org.springframework.beans.PropertyEditorRegistrar) instead of this method, to avoid for the need for synchronization on custom editors.

Specified by:

registerCustomEditor in interface ConfigurableBeanFactory

Parameters:

requiredType - type of the property

propertyEditorClass - the PropertyEditor class to register

copyRegisteredEditorsTo

public void copyRegisteredEditorsTo(PropertyEditorRegistry registry)

Description copied from interface: ConfigurableBeanFactory

Initialize the given PropertyEditorRegistry with the custom editors that have been registered with this BeanFactory.

Specified by:

copyRegisteredEditorsTo in interface ConfigurableBeanFactory

Parameters:

registry - the PropertyEditorRegistry to initialize

getCustomEditors

public Map<Class<?>,Class<? extends PropertyEditor>> getCustomEditors()

Return the map of custom editors, with Classes as keys and PropertyEditor classes as values.

setTypeConverter

public void setTypeConverter(TypeConverter typeConverter)

Description copied from interface: ConfigurableBeanFactory

Set a custom type converter that this BeanFactory should use for converting bean property values, constructor argument values, etc.

This will override the default PropertyEditor mechanism and hence make any custom editors or custom editor registrars irrelevant.

Specified by:

setTypeConverter in interface ConfigurableBeanFactory

See Also:

ConfigurableBeanFactory.addPropertyEditorRegistrar(org.springframework.beans.PropertyEditorRegistrar), ConfigurableBeanFactory.registerCustomEditor(java.lang.Class<?>, java.lang.Class<? extends java.beans.PropertyEditor>)

getCustomTypeConverter

protected TypeConverter getCustomTypeConverter()

Return the custom TypeConverter to use, if any.

Returns:

the custom TypeConverter, or null if none specified

getTypeConverter

public TypeConverter getTypeConverter()

Description copied from interface: ConfigurableBeanFactory

Obtain a type converter as used by this BeanFactory. This may be a fresh instance for each call, since TypeConverters are usually not thread-safe.

If the default PropertyEditor mechanism is active, the returned TypeConverter will be aware of all custom editors that have been registered.

Specified by:

getTypeConverter in interface ConfigurableBeanFactory

addEmbeddedValueResolver

public void addEmbeddedValueResolver(org.springframework.util.StringValueResolver valueResolver)

Description copied from interface: ConfigurableBeanFactory

Add a String resolver for embedded values such as annotation attributes.

Specified by:

addEmbeddedValueResolver in interface ConfigurableBeanFactory

Parameters:

valueResolver - the String resolver to apply to embedded values

resolveEmbeddedValue

public String resolveEmbeddedValue(String value)

Description copied from interface: ConfigurableBeanFactory

Resolve the given embedded value, e.g. an annotation attribute.

Specified by:

resolveEmbeddedValue in interface ConfigurableBeanFactory

Parameters:

value - the value to resolve

Returns:

the resolved value (may be the original value as-is)

addBeanPostProcessor

public void addBeanPostProcessor(BeanPostProcessor beanPostProcessor)

Description copied from interface: ConfigurableBeanFactory

Add a new BeanPostProcessor that will get applied to beans created by this factory. To be invoked during factory configuration.

Note: Post-processors submitted here will be applied in the order of registration; any ordering semantics expressed through implementing the Ordered interface will be ignored. Note that autodetected post-processors (e.g. as beans in an ApplicationContext) will always be applied after programmatically registered ones.

Specified by:

addBeanPostProcessor in interface ConfigurableBeanFactory

Parameters:

beanPostProcessor - the post-processor to register

getBeanPostProcessorCount

public int getBeanPostProcessorCount()

Description copied from interface: ConfigurableBeanFactory

Return the current number of registered BeanPostProcessors, if any.

Specified by:

getBeanPostProcessorCount in interface ConfigurableBeanFactory

getBeanPostProcessors

public List<BeanPostProcessor> getBeanPostProcessors()

Return the list of BeanPostProcessors that will get applied to beans created with this factory.

hasInstantiationAwareBeanPostProcessors

protected boolean hasInstantiationAwareBeanPostProcessors()

Return whether this factory holds a InstantiationAwareBeanPostProcessor that will get applied to singleton beans on shutdown.

See Also:

addBeanPostProcessor(org.springframework.beans.factory.config.BeanPostProcessor), InstantiationAwareBeanPostProcessor

hasDestructionAwareBeanPostProcessors

protected boolean hasDestructionAwareBeanPostProcessors()

Return whether this factory holds a DestructionAwareBeanPostProcessor that will get applied to singleton beans on shutdown.

See Also:

addBeanPostProcessor(org.springframework.beans.factory.config.BeanPostProcessor), DestructionAwareBeanPostProcessor

registerScope

public void registerScope(String scopeName,
                 Scope scope)

Description copied from interface: ConfigurableBeanFactory

Register the given scope, backed by the given Scope implementation.

Specified by:

registerScope in interface ConfigurableBeanFactory

Parameters:

scopeName - the scope identifier

scope - the backing Scope implementation

getRegisteredScopeNames

public String[] getRegisteredScopeNames()

Description copied from interface: ConfigurableBeanFactory

Return the names of all currently registered scopes.

This will only return the names of explicitly registered scopes. Built-in scopes such as "singleton" and "prototype" won't be exposed.

Specified by:

getRegisteredScopeNames in interface ConfigurableBeanFactory

Returns:

the array of scope names, or an empty array if none

See Also:

ConfigurableBeanFactory.registerScope(java.lang.String, org.springframework.beans.factory.config.Scope)

getRegisteredScope

public Scope getRegisteredScope(String scopeName)

Description copied from interface: ConfigurableBeanFactory

Return the Scope implementation for the given scope name, if any.

This will only return explicitly registered scopes. Built-in scopes such as "singleton" and "prototype" won't be exposed.

Specified by:

getRegisteredScope in interface ConfigurableBeanFactory

Parameters:

scopeName - the name of the scope

Returns:

the registered Scope implementation, or null if none

See Also:

ConfigurableBeanFactory.registerScope(java.lang.String, org.springframework.beans.factory.config.Scope)

setSecurityContextProvider

public void setSecurityContextProvider(SecurityContextProvider securityProvider)

Set the security context provider for this bean factory. If a security manager is set, interaction with the user code will be executed using the privileged of the provided security context.

getAccessControlContext

public AccessControlContext getAccessControlContext()

Delegate the creation of the access control context to the SecurityContextProvider.

Specified by:

getAccessControlContext in interface ConfigurableBeanFactory

Overrides:

getAccessControlContext in class FactoryBeanRegistrySupport

Returns:

the applicable AccessControlContext (never null)

See Also:

AccessController.getContext()

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

Parameters:

otherFactory - the other BeanFactory to copy from

getMergedBeanDefinition

public BeanDefinition getMergedBeanDefinition(String name)
                                       throws BeansException

Return a 'merged' BeanDefinition for the given bean name, merging a child bean definition with its parent if necessary.

This getMergedBeanDefinition considers bean definition in ancestors as well.

Specified by:

getMergedBeanDefinition in interface ConfigurableBeanFactory

Parameters:

name - the name of the bean to retrieve the merged definition for (may be an alias)

Returns:

a (potentially merged) RootBeanDefinition for the given bean

Throws:

NoSuchBeanDefinitionException - if there is no bean with the given name

BeanDefinitionStoreException - in case of an invalid bean definition

BeansException

isFactoryBean

public boolean isFactoryBean(String name)
                      throws NoSuchBeanDefinitionException

Description copied from interface: ConfigurableBeanFactory

Determine whether the bean with the given name is a FactoryBean.

Specified by:

isFactoryBean in interface ConfigurableBeanFactory

Parameters:

name - the name of the bean to check

Returns:

whether the bean is a FactoryBean (false means the bean exists but is not a FactoryBean)

Throws:

NoSuchBeanDefinitionException - if there is no bean with the given name

isActuallyInCreation

public boolean isActuallyInCreation(String beanName)

Overrides:

isActuallyInCreation in class DefaultSingletonBeanRegistry

isPrototypeCurrentlyInCreation

protected boolean isPrototypeCurrentlyInCreation(String beanName)

Return whether the specified prototype bean is currently in creation (within the current thread).

Parameters:

beanName - the name of the bean

beforePrototypeCreation

protected void beforePrototypeCreation(String beanName)

Callback before prototype creation.

The default implementation register the prototype as currently in creation.

Parameters:

beanName - the name of the prototype about to be created

See Also:

isPrototypeCurrentlyInCreation(java.lang.String)

afterPrototypeCreation

protected void afterPrototypeCreation(String beanName)

Callback after prototype creation.

The default implementation marks the prototype as not in creation anymore.

Parameters:

beanName - the name of the prototype that has been created

See Also:

isPrototypeCurrentlyInCreation(java.lang.String)

destroyBean

public void destroyBean(String beanName,
               Object beanInstance)

Description copied from interface: ConfigurableBeanFactory

Destroy the given bean instance (usually a prototype instance obtained from this factory) according to its bean definition.

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

Specified by:

destroyBean in interface ConfigurableBeanFactory

Parameters:

beanName - the name of the bean definition

beanInstance - the bean instance to destroy

destroyBean

protected void destroyBean(String beanName,
               Object beanInstance,
               RootBeanDefinition mbd)

Destroy the given bean instance (usually a prototype instance obtained from this factory) according to the given bean definition.

Parameters:

beanName - the name of the bean definition

beanInstance - the bean instance to destroy

mbd - the merged bean definition

destroyScopedBean

public void destroyScopedBean(String beanName)

Description copied from interface: ConfigurableBeanFactory

Destroy the specified scoped bean in the current target scope, if any.

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

Specified by:

destroyScopedBean in interface ConfigurableBeanFactory

Parameters:

beanName - the name of the scoped bean

transformedBeanName

protected String transformedBeanName(String name)

Return the bean name, stripping out the factory dereference prefix if necessary, and resolving aliases to canonical names.

Parameters:

name - the user-specified name

Returns:

the transformed bean name

originalBeanName

protected String originalBeanName(String name)

Determine the original bean name, resolving locally defined aliases to canonical names.

Parameters:

name - the user-specified name

Returns:

the original bean name

initBeanWrapper

protected void initBeanWrapper(BeanWrapper bw)

Initialize the given BeanWrapper with the custom editors registered with this factory. To be called for BeanWrappers that will create and populate bean instances.

The default implementation delegates to registerCustomEditors(org.springframework.beans.PropertyEditorRegistry). Can be overridden in subclasses.

Parameters:

bw - the BeanWrapper to initialize

registerCustomEditors

protected void registerCustomEditors(PropertyEditorRegistry registry)

Initialize the given PropertyEditorRegistry with the custom editors that have been registered with this BeanFactory.

To be called for BeanWrappers that will create and populate bean instances, and for SimpleTypeConverter used for constructor argument and factory method type conversion.

Parameters:

registry - the PropertyEditorRegistry to initialize

getMergedLocalBeanDefinition

protected RootBeanDefinition getMergedLocalBeanDefinition(String beanName)
                                                   throws BeansException

Return a merged RootBeanDefinition, traversing the parent bean definition if the specified bean corresponds to a child bean definition.

Parameters:

beanName - the name of the bean to retrieve the merged definition for

Returns:

a (potentially merged) RootBeanDefinition for the given bean

Throws:

NoSuchBeanDefinitionException - if there is no bean with the given name

BeanDefinitionStoreException - in case of an invalid bean definition

BeansException

getMergedBeanDefinition

protected RootBeanDefinition getMergedBeanDefinition(String beanName,
                                         BeanDefinition bd)
                                              throws BeanDefinitionStoreException

Return a RootBeanDefinition for the given top-level bean, by merging with the parent if the given bean's definition is a child bean definition.

Parameters:

beanName - the name of the bean definition

bd - the original bean definition (Root/ChildBeanDefinition)

Returns:

a (potentially merged) RootBeanDefinition for the given bean

Throws:

BeanDefinitionStoreException - in case of an invalid bean definition

getMergedBeanDefinition

protected RootBeanDefinition getMergedBeanDefinition(String beanName,
                                         BeanDefinition bd,
                                         BeanDefinition containingBd)
                                              throws BeanDefinitionStoreException

Return a RootBeanDefinition for the given bean, by merging with the parent if the given bean's definition is a child bean definition.

Parameters:

beanName - the name of the bean definition

bd - the original bean definition (Root/ChildBeanDefinition)

containingBd - the containing bean definition in case of inner bean, or null in case of a top-level bean

Returns:

a (potentially merged) RootBeanDefinition for the given bean

Throws:

BeanDefinitionStoreException - in case of an invalid bean definition

checkMergedBeanDefinition

protected void checkMergedBeanDefinition(RootBeanDefinition mbd,
                             String beanName,
                             Object[] args)
                                  throws BeanDefinitionStoreException

Check the given merged bean definition, potentially throwing validation exceptions.

Parameters:

mbd - the merged bean definition to check

beanName - the name of the bean

args - the arguments for bean creation, if any

Throws:

BeanDefinitionStoreException - in case of validation failure

clearMergedBeanDefinition

protected void clearMergedBeanDefinition(String beanName)

Remove the merged bean definition for the specified bean, recreating it on next access.

Parameters:

beanName - the bean name to clear the merged definition for

resolveBeanClass

protected Class<?> resolveBeanClass(RootBeanDefinition mbd,
                        String beanName,
                        Class<?>... typesToMatch)
                             throws CannotLoadBeanClassException

Resolve the bean class for the specified bean definition, resolving a bean class name into a Class reference (if necessary) and storing the resolved Class in the bean definition for further use.

Parameters:

mbd - the merged bean definition to determine the class for

beanName - the name of the bean (for error handling purposes)

typesToMatch - the types to match in case of internal type matching purposes (also signals that the returned Class will never be exposed to application code)

Returns:

the resolved bean class (or null if none)

Throws:

CannotLoadBeanClassException - if we failed to load the class

evaluateBeanDefinitionString

protected Object evaluateBeanDefinitionString(String value,
                                  BeanDefinition beanDefinition)

Evaluate the given String as contained in a bean definition, potentially resolving it as an expression.

Parameters:

value - the value to check

beanDefinition - the bean definition that the value comes from

Returns:

the resolved value

See Also:

setBeanExpressionResolver(org.springframework.beans.factory.config.BeanExpressionResolver)

predictBeanType

protected Class<?> predictBeanType(String beanName,
                       RootBeanDefinition mbd,
                       Class<?>... typesToMatch)

Predict the eventual bean type (of the processed bean instance) for the specified bean. Called by getType(java.lang.String) and isTypeMatch(java.lang.String, java.lang.Class<?>). Does not need to handle FactoryBeans specifically, since it is only supposed to operate on the raw bean type.

This implementation is simplistic in that it is not able to handle factory methods and InstantiationAwareBeanPostProcessors. It only predicts the bean type correctly for a standard bean. To be overridden in subclasses, applying more sophisticated type detection.

Parameters:

beanName - the name of the bean

mbd - the merged bean definition to determine the type for

typesToMatch - the types to match in case of internal type matching purposes (also signals that the returned Class will never be exposed to application code)

Returns:

the type of the bean, or null if not predictable

isFactoryBean

protected boolean isFactoryBean(String beanName,
                    RootBeanDefinition mbd)

Check whether the given bean is defined as a FactoryBean.

Parameters:

beanName - the name of the bean

mbd - the corresponding bean definition

getTypeForFactoryBean

protected Class<?> getTypeForFactoryBean(String beanName,
                             RootBeanDefinition mbd)

Determine the bean type for the given FactoryBean definition, as far as possible. Only called if there is no singleton instance registered for the target bean already.

The default implementation creates the FactoryBean via getBean to call its getObjectType method. Subclasses are encouraged to optimize this, typically by just instantiating the FactoryBean but not populating it yet, trying whether its getObjectType method already returns a type. If no type found, a full FactoryBean creation as performed by this implementation should be used as fallback.

Parameters:

beanName - the name of the bean

mbd - the merged bean definition for the bean

Returns:

the type for the bean if determinable, or null else

See Also:

FactoryBean.getObjectType(), getBean(String)

markBeanAsCreated

protected void markBeanAsCreated(String beanName)

Mark the specified bean as already created (or about to be created).

This allows the bean factory to optimize its caching for repeated creation of the specified bean.

Parameters:

beanName - the name of the bean

isBeanEligibleForMetadataCaching

protected boolean isBeanEligibleForMetadataCaching(String beanName)

Determine whether the specified bean is eligible for having its bean definition metadata cached.

Parameters:

beanName - the name of the bean

Returns:

true if the bean's metadata may be cached at this point already

removeSingletonIfCreatedForTypeCheckOnly

protected boolean removeSingletonIfCreatedForTypeCheckOnly(String beanName)

Remove the singleton instance (if any) for the given bean name, but only if it hasn't been used for other purposes than type checking.

Parameters:

beanName - the name of the bean

Returns:

true if actually removed, false otherwise

getObjectForBeanInstance

protected Object getObjectForBeanInstance(Object beanInstance,
                              String name,
                              String beanName,
                              RootBeanDefinition mbd)

Get the object for the given bean instance, either the bean instance itself or its created object in case of a FactoryBean.

Parameters:

beanInstance - the shared bean instance

name - name that may include factory dereference prefix

beanName - the canonical bean name

mbd - the merged bean definition

Returns:

the object to expose for the bean

isBeanNameInUse

public boolean isBeanNameInUse(String beanName)

Determine whether the given bean name is already in use within this factory, i.e. whether there is a local bean or alias registered under this name or an inner bean created with this name.

Parameters:

beanName - the name to check

requiresDestruction

protected boolean requiresDestruction(Object bean,
                          RootBeanDefinition mbd)

Determine whether the given bean requires destruction on shutdown.

The default implementation checks the DisposableBean interface as well as a specified destroy method and registered DestructionAwareBeanPostProcessors.

Parameters:

bean - the bean instance to check

mbd - the corresponding bean definition

See Also:

DisposableBean, AbstractBeanDefinition.getDestroyMethodName(), DestructionAwareBeanPostProcessor

registerDisposableBeanIfNecessary

protected void registerDisposableBeanIfNecessary(String beanName,
                                     Object bean,
                                     RootBeanDefinition mbd)

Add the given bean to the list of disposable beans in this factory, registering its DisposableBean interface and/or the given destroy method to be called on factory shutdown (if applicable). Only applies to singletons.

Parameters:

beanName - the name of the bean

bean - the bean instance

mbd - the bean definition for the bean

See Also:

AbstractBeanDefinition.isSingleton(), AbstractBeanDefinition.getDependsOn(), DefaultSingletonBeanRegistry.registerDisposableBean(java.lang.String, org.springframework.beans.factory.DisposableBean), DefaultSingletonBeanRegistry.registerDependentBean(java.lang.String, java.lang.String)

containsBeanDefinition

protected abstract boolean containsBeanDefinition(String beanName)

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.

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:

containsBean(java.lang.String), ListableBeanFactory.containsBeanDefinition(java.lang.String)

getBeanDefinition

protected abstract BeanDefinition getBeanDefinition(String beanName)
                                             throws BeansException

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.

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

BeansException - in case of errors

See Also:

RootBeanDefinition, ChildBeanDefinition, ConfigurableListableBeanFactory.getBeanDefinition(java.lang.String)

createBean

protected abstract Object createBean(String beanName,
                RootBeanDefinition mbd,
                Object[] args)
                              throws BeanCreationException

Create a bean instance for the given bean definition. The bean definition will already have been merged with the parent definition in case of a child definition.

All the other methods in this class invoke this method, although beans may be cached after being instantiated by this method. All bean instantiation within this class is performed by this method.

Parameters:

beanName - the name of the bean

mbd - the merged bean definition for the bean

args - arguments to use if creating a prototype using explicit arguments to a static factory method. This parameter must be null except in this case.

Returns:

a new instance of the bean

Throws:

BeanCreationException - if the bean could not be created