Package org.springframework.beans.factory.support

Class RootBeanDefinition

java.lang.Object

org.springframework.core.AttributeAccessorSupport

org.springframework.beans.BeanMetadataAttributeAccessor

org.springframework.beans.factory.support.AbstractBeanDefinition

org.springframework.beans.factory.support.RootBeanDefinition

All Implemented Interfaces:

Serializable, Cloneable, BeanMetadataElement, BeanDefinition, AttributeAccessor

public class RootBeanDefinition
extends AbstractBeanDefinition

A root bean definition represents the merged bean definition at runtime that backs a specific bean in a Spring BeanFactory. It might have been created from multiple original bean definitions that inherit from each other, for example, GenericBeanDefinitions from XML declarations. A root bean definition is essentially the 'unified' bean definition view at runtime.

Root bean definitions may also be used for registering individual bean definitions in the configuration phase. This is particularly applicable for programmatic definitions derived from factory methods (for example, @Bean methods) and instance suppliers (for example, lambda expressions) which come with extra type metadata (see setTargetType(ResolvableType)/setResolvedFactoryMethod(Method)).

Note: The preferred choice for bean definitions derived from declarative sources (for example, XML definitions) is the flexible GenericBeanDefinition variant. GenericBeanDefinition comes with the advantage that it allows for dynamically defining parent dependencies, not 'hard-coding' the role as a root bean definition, even supporting parent relationship changes in the bean post-processor phase.

Author:

Rod Johnson, Juergen Hoeller, Sam Brannen

See Also:

• GenericBeanDefinition
• ChildBeanDefinition
• Serialized Form

Field Summary

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

AUTOWIRE_AUTODETECT, AUTOWIRE_BY_NAME, AUTOWIRE_BY_TYPE, AUTOWIRE_CONSTRUCTOR, AUTOWIRE_NO, DEPENDENCY_CHECK_ALL, DEPENDENCY_CHECK_NONE, DEPENDENCY_CHECK_OBJECTS, DEPENDENCY_CHECK_SIMPLE, INFER_METHOD, ORDER_ATTRIBUTE, PREFERRED_CONSTRUCTORS_ATTRIBUTE, SCOPE_DEFAULT

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

ROLE_APPLICATION, ROLE_INFRASTRUCTURE, ROLE_SUPPORT, SCOPE_PROTOTYPE, SCOPE_SINGLETON

Constructor Summary

Constructors

Constructor	Description
RootBeanDefinition()	Create a new RootBeanDefinition, to be configured through its bean properties and configuration methods.
RootBeanDefinition(Class<?> beanClass)	Create a new RootBeanDefinition for a singleton.
RootBeanDefinition(Class<?> beanClass, int autowireMode, boolean dependencyCheck)	Create a new RootBeanDefinition for a singleton, using the given autowire mode.
RootBeanDefinition(Class<?> beanClass, ConstructorArgumentValues cargs, MutablePropertyValues pvs)	Create a new RootBeanDefinition for a singleton, providing constructor arguments and property values.
RootBeanDefinition(Class<T> beanClass, String scope, Supplier<T> instanceSupplier)	Create a new RootBeanDefinition for a scoped bean, constructing each instance through calling the given supplier (possibly a lambda or method reference).
RootBeanDefinition(Class<T> beanClass, Supplier<T> instanceSupplier)	Create a new RootBeanDefinition for a singleton bean, constructing each instance through calling the given supplier (possibly a lambda or method reference).
RootBeanDefinition(String beanClassName)	Create a new RootBeanDefinition for a singleton, providing constructor arguments and property values.
RootBeanDefinition(String beanClassName, ConstructorArgumentValues cargs, MutablePropertyValues pvs)	Create a new RootBeanDefinition for a singleton, providing constructor arguments and property values.
RootBeanDefinition(RootBeanDefinition original)	Create a new RootBeanDefinition as deep copy of the given bean definition.
RootBeanDefinition(ResolvableType beanType)	Deprecated. as of 6.0.11, in favor of an extra setTargetType(ResolvableType) call

Method Summary

Modifier and Type	Method	Description
RootBeanDefinition	cloneBeanDefinition()	Clone this bean definition.
boolean	equals(Object other)
BeanDefinitionHolder	getDecoratedDefinition()	Return the target definition that is being decorated by this bean definition, if any.
Set<Member>	getExternallyManagedConfigMembers()	Get all externally managed configuration methods and fields (as an immutable Set).
Set<String>	getExternallyManagedDestroyMethods()	Get all externally managed destruction methods (as an immutable Set).
Set<String>	getExternallyManagedInitMethods()	Get all externally managed initialization methods (as an immutable Set).
String	getParentName()	Return the name of the parent definition of this bean definition, if any.
Constructor<?>[]	getPreferredConstructors()	Determine preferred constructors to use for default construction, if any.
AnnotatedElement	getQualifiedElement()	Return the AnnotatedElement defining qualifiers, if any.
ResolvableType	getResolvableType()	Return a ResolvableType for this bean definition, either from runtime-cached type information or from configuration-time setTargetType(ResolvableType) or AbstractBeanDefinition.setBeanClass(Class), also considering resolved factory method definitions.
Method	getResolvedFactoryMethod()	Return the resolved factory method as a Java Method object, if available.
Class<?>	getTargetType()	Return the target type of this bean definition, if known (either specified in advance or resolved on first instantiation).
boolean	isExternallyManagedConfigMember(Member configMember)	Determine if the given method or field is an externally managed configuration member.
boolean	isExternallyManagedDestroyMethod(String destroyMethod)	Determine if the given method name indicates an externally managed destruction method.
boolean	isExternallyManagedInitMethod(String initMethod)	Determine if the given method name indicates an externally managed initialization method.
boolean	isFactoryMethod(Method candidate)	Check whether the given candidate qualifies as a factory method.
void	markAsPostProcessed()	Mark this bean definition as post-processed, i.e.
void	registerExternallyManagedConfigMember(Member configMember)	Register an externally managed configuration method or field.
void	registerExternallyManagedDestroyMethod(String destroyMethod)	Register an externally managed configuration destruction method — for example, a method annotated with JSR-250's PreDestroy annotation.
void	registerExternallyManagedInitMethod(String initMethod)	Register an externally managed configuration initialization method — for example, a method annotated with JSR-250's javax.annotation.PostConstruct or Jakarta's PostConstruct annotation.
void	resolveDestroyMethodIfNecessary()	Resolve the inferred destroy method if necessary.
void	setDecoratedDefinition(BeanDefinitionHolder decoratedDefinition)	Register a target definition that is being decorated by this bean definition.
void	setNonUniqueFactoryMethodName(String name)	Specify a factory method name that refers to an overloaded method.
void	setParentName(String parentName)	Set the name of the parent definition of this bean definition, if any.
void	setQualifiedElement(AnnotatedElement qualifiedElement)	Specify the AnnotatedElement defining qualifiers, to be used instead of the target class or factory method.
void	setResolvedFactoryMethod(Method method)	Set a resolved Java Method for the factory method on this bean definition.
void	setTargetType(Class<?> targetType)	Specify the target type of this bean definition, if known in advance.
void	setTargetType(ResolvableType targetType)	Specify a generics-containing target type of this bean definition, if known in advance.
void	setUniqueFactoryMethodName(String name)	Specify a factory method name that refers to a non-overloaded method.
String	toString()

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

addQualifier, applyDefaults, clone, copyQualifiersFrom, getAutowireMode, getBeanClass, getBeanClassName, getConstructorArgumentValues, getDependencyCheck, getDependsOn, getDescription, getDestroyMethodName, getDestroyMethodNames, getFactoryBeanName, getFactoryMethodName, getInitMethodName, getInitMethodNames, getInstanceSupplier, getLazyInit, getMethodOverrides, getOriginatingBeanDefinition, getPropertyValues, getQualifier, getQualifiers, getResolvedAutowireMode, getResource, getResourceDescription, getRole, getScope, hasBeanClass, hasConstructorArgumentValues, hashCode, hasMethodOverrides, hasPropertyValues, hasQualifier, isAbstract, isAutowireCandidate, isBackgroundInit, isDefaultCandidate, isEnforceDestroyMethod, isEnforceInitMethod, isFallback, isLazyInit, isLenientConstructorResolution, isNonPublicAccessAllowed, isPrimary, isPrototype, isSingleton, isSynthetic, overrideFrom, prepareMethodOverride, prepareMethodOverrides, resolveBeanClass, setAbstract, setAutowireCandidate, setAutowireMode, setBackgroundInit, setBeanClass, setBeanClassName, setConstructorArgumentValues, setDefaultCandidate, setDependencyCheck, setDependsOn, setDescription, setDestroyMethodName, setDestroyMethodNames, setEnforceDestroyMethod, setEnforceInitMethod, setFactoryBeanName, setFactoryMethodName, setFallback, setInitMethodName, setInitMethodNames, setInstanceSupplier, setLazyInit, setLenientConstructorResolution, setMethodOverrides, setNonPublicAccessAllowed, setOriginatingBeanDefinition, setPrimary, setPropertyValues, setResource, setResourceDescription, setRole, setScope, setSynthetic, validate

Methods inherited from class org.springframework.beans.BeanMetadataAttributeAccessor

addMetadataAttribute, getAttribute, getMetadataAttribute, getSource, removeAttribute, setAttribute, setSource

Methods inherited from class org.springframework.core.AttributeAccessorSupport

attributeNames, computeAttribute, copyAttributesFrom, hasAttribute

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.springframework.core.AttributeAccessor

attributeNames, computeAttribute, getAttribute, hasAttribute, removeAttribute, setAttribute

Methods inherited from interface org.springframework.beans.BeanMetadataElement

getSource

Constructor Details

RootBeanDefinition

public RootBeanDefinition()

Create a new RootBeanDefinition, to be configured through its bean properties and configuration methods.

See Also:

• AbstractBeanDefinition.setBeanClass(java.lang.Class<?>)
• AbstractBeanDefinition.setScope(java.lang.String)
• AbstractBeanDefinition.setConstructorArgumentValues(org.springframework.beans.factory.config.ConstructorArgumentValues)
• AbstractBeanDefinition.setPropertyValues(org.springframework.beans.MutablePropertyValues)

RootBeanDefinition

public RootBeanDefinition(@Nullable
 Class<?> beanClass)

Create a new RootBeanDefinition for a singleton.

Parameters:

beanClass - the class of the bean to instantiate

See Also:

• AbstractBeanDefinition.setBeanClass(java.lang.Class<?>)

RootBeanDefinition

@Deprecated(since="6.0.11")
public RootBeanDefinition(@Nullable
 ResolvableType beanType)

Deprecated.

as of 6.0.11, in favor of an extra setTargetType(ResolvableType) call

Create a new RootBeanDefinition for a singleton.

Parameters:

beanType - the type of bean to instantiate

Since:

6.0

See Also:

• setTargetType(ResolvableType)

RootBeanDefinition

public RootBeanDefinition(@Nullable
 Class<T> beanClass,
 @Nullable
 Supplier<T> instanceSupplier)

Create a new RootBeanDefinition for a singleton bean, constructing each instance through calling the given supplier (possibly a lambda or method reference).

Parameters:

beanClass - the class of the bean to instantiate

instanceSupplier - the supplier to construct a bean instance, as an alternative to a declaratively specified factory method

Since:

5.0

See Also:

• AbstractBeanDefinition.setInstanceSupplier(java.util.function.Supplier<?>)

RootBeanDefinition

public RootBeanDefinition(@Nullable
 Class<T> beanClass,
 String scope,
 @Nullable
 Supplier<T> instanceSupplier)

Create a new RootBeanDefinition for a scoped bean, constructing each instance through calling the given supplier (possibly a lambda or method reference).

Parameters:

beanClass - the class of the bean to instantiate

scope - the name of the corresponding scope

instanceSupplier - the supplier to construct a bean instance, as an alternative to a declaratively specified factory method

Since:

5.0

See Also:

• AbstractBeanDefinition.setInstanceSupplier(java.util.function.Supplier<?>)

RootBeanDefinition

public RootBeanDefinition(@Nullable
 Class<?> beanClass,
 int autowireMode,
 boolean dependencyCheck)

Create a new RootBeanDefinition for a singleton, using the given autowire mode.

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 objects (not applicable to autowiring a constructor, thus ignored there)

RootBeanDefinition

public RootBeanDefinition(@Nullable
 Class<?> beanClass,
 @Nullable
 ConstructorArgumentValues cargs,
 @Nullable
 MutablePropertyValues pvs)

Create a new RootBeanDefinition for a singleton, providing constructor arguments and property values.

Parameters:

beanClass - the class of the bean to instantiate

cargs - the constructor argument values to apply

pvs - the property values to apply

RootBeanDefinition

public RootBeanDefinition(String beanClassName)

Create a new RootBeanDefinition for a singleton, providing constructor arguments and property values.

Takes a bean class name to avoid eager loading of the bean class.

Parameters:

beanClassName - the name of the class to instantiate

RootBeanDefinition

public RootBeanDefinition(String beanClassName,
 ConstructorArgumentValues cargs,
 MutablePropertyValues pvs)

Create a new RootBeanDefinition for a singleton, providing constructor arguments and property values.

Takes a bean class name to avoid eager loading of the bean class.

Parameters:

beanClassName - the name of the class to instantiate

cargs - the constructor argument values to apply

pvs - the property values to apply

RootBeanDefinition

public RootBeanDefinition(RootBeanDefinition original)

Create a new RootBeanDefinition as deep copy of the given bean definition.

Parameters:

original - the original bean definition to copy from

Method Details

getParentName

@Nullable
public String getParentName()

Description copied from interface: BeanDefinition

Return the name of the parent definition of this bean definition, if any.

setParentName

public void setParentName(@Nullable
 String parentName)

Description copied from interface: BeanDefinition

Set the name of the parent definition of this bean definition, if any.

setDecoratedDefinition

public void setDecoratedDefinition(@Nullable
 BeanDefinitionHolder decoratedDefinition)

Register a target definition that is being decorated by this bean definition.

getDecoratedDefinition

@Nullable
public BeanDefinitionHolder getDecoratedDefinition()

Return the target definition that is being decorated by this bean definition, if any.

setQualifiedElement

public void setQualifiedElement(@Nullable
 AnnotatedElement qualifiedElement)

Specify the AnnotatedElement defining qualifiers, to be used instead of the target class or factory method.

Since:

4.3.3

See Also:

• setTargetType(ResolvableType)
• getResolvedFactoryMethod()

getQualifiedElement

@Nullable
public AnnotatedElement getQualifiedElement()

Return the AnnotatedElement defining qualifiers, if any. Otherwise, the factory method and target class will be checked.

Since:

4.3.3

setTargetType

public void setTargetType(@Nullable
 ResolvableType targetType)

Specify a generics-containing target type of this bean definition, if known in advance.

Since:

4.3.3

setTargetType

public void setTargetType(@Nullable
 Class<?> targetType)

Specify the target type of this bean definition, if known in advance.

Since:

3.2.2

getTargetType

@Nullable
public Class<?> getTargetType()

Return the target type of this bean definition, if known (either specified in advance or resolved on first instantiation).

Since:

3.2.2

getResolvableType

public ResolvableType getResolvableType()

Return a ResolvableType for this bean definition, either from runtime-cached type information or from configuration-time setTargetType(ResolvableType) or AbstractBeanDefinition.setBeanClass(Class), also considering resolved factory method definitions.

Specified by:

getResolvableType in interface BeanDefinition

Overrides:

getResolvableType in class AbstractBeanDefinition

Returns:

the resolvable type (potentially ResolvableType.NONE)

Since:

5.1

See Also:

• setTargetType(ResolvableType)
• AbstractBeanDefinition.setBeanClass(Class)
• setResolvedFactoryMethod(Method)

getPreferredConstructors

@Nullable
public Constructor<?>[] getPreferredConstructors()

Determine preferred constructors to use for default construction, if any. Constructor arguments will be autowired if necessary.

As of 6.1, the default implementation of this method takes the AbstractBeanDefinition.PREFERRED_CONSTRUCTORS_ATTRIBUTE attribute into account. Subclasses are encouraged to preserve this through a super call, either before or after their own preferred constructor determination.

Returns:

one or more preferred constructors, or null if none (in which case the regular no-arg default constructor will be called)

Since:

5.1

setUniqueFactoryMethodName

public void setUniqueFactoryMethodName(String name)

Specify a factory method name that refers to a non-overloaded method.

setNonUniqueFactoryMethodName

public void setNonUniqueFactoryMethodName(String name)

Specify a factory method name that refers to an overloaded method.

Since:

5.2

isFactoryMethod

public boolean isFactoryMethod(Method candidate)

Check whether the given candidate qualifies as a factory method.

setResolvedFactoryMethod

public void setResolvedFactoryMethod(@Nullable
 Method method)

Set a resolved Java Method for the factory method on this bean definition.

Parameters:

method - the resolved factory method, or null to reset it

Since:

5.2

getResolvedFactoryMethod

@Nullable
public Method getResolvedFactoryMethod()

Return the resolved factory method as a Java Method object, if available.

Returns:

the factory method, or null if not found or not resolved yet

markAsPostProcessed

public void markAsPostProcessed()

Mark this bean definition as post-processed, i.e. processed by MergedBeanDefinitionPostProcessor.

Since:

6.0

registerExternallyManagedConfigMember

public void registerExternallyManagedConfigMember(Member configMember)

Register an externally managed configuration method or field.

isExternallyManagedConfigMember

public boolean isExternallyManagedConfigMember(Member configMember)

Determine if the given method or field is an externally managed configuration member.

getExternallyManagedConfigMembers

public Set<Member> getExternallyManagedConfigMembers()

Get all externally managed configuration methods and fields (as an immutable Set).

Since:

5.3.11

registerExternallyManagedInitMethod

public void registerExternallyManagedInitMethod(String initMethod)

Register an externally managed configuration initialization method — for example, a method annotated with JSR-250's javax.annotation.PostConstruct or Jakarta's PostConstruct annotation.

The supplied initMethod may be a simple method name or a qualified method name for package-private and private methods. A qualified name is necessary for package-private and private methods in order to disambiguate between multiple such methods with the same name within a type hierarchy.

isExternallyManagedInitMethod

public boolean isExternallyManagedInitMethod(String initMethod)

Determine if the given method name indicates an externally managed initialization method.

See registerExternallyManagedInitMethod(java.lang.String) for details regarding the format for the supplied initMethod.

getExternallyManagedInitMethods

public Set<String> getExternallyManagedInitMethods()

Get all externally managed initialization methods (as an immutable Set).

See registerExternallyManagedInitMethod(java.lang.String) for details regarding the format for the initialization methods in the returned set.

Since:

5.3.11

resolveDestroyMethodIfNecessary

public void resolveDestroyMethodIfNecessary()

Resolve the inferred destroy method if necessary.

Since:

6.0

registerExternallyManagedDestroyMethod

public void registerExternallyManagedDestroyMethod(String destroyMethod)

Register an externally managed configuration destruction method — for example, a method annotated with JSR-250's PreDestroy annotation.

The supplied destroyMethod may be the simple method name for non-private methods or the qualified method name for private methods. A qualified name is necessary for private methods in order to disambiguate between multiple private methods with the same name within a class hierarchy.

isExternallyManagedDestroyMethod

public boolean isExternallyManagedDestroyMethod(String destroyMethod)

Determine if the given method name indicates an externally managed destruction method.

See registerExternallyManagedDestroyMethod(java.lang.String) for details regarding the format for the supplied destroyMethod.

getExternallyManagedDestroyMethods

public Set<String> getExternallyManagedDestroyMethods()

Get all externally managed destruction methods (as an immutable Set).

See registerExternallyManagedDestroyMethod(java.lang.String) for details regarding the format for the destruction methods in the returned set.

Since:

5.3.11

cloneBeanDefinition

public RootBeanDefinition cloneBeanDefinition()

Description copied from class: AbstractBeanDefinition

Clone this bean definition. To be implemented by concrete subclasses.

Specified by:

cloneBeanDefinition in class AbstractBeanDefinition

Returns:

the cloned bean definition object

equals

public boolean equals(@Nullable
 Object other)

Overrides:

equals in class AbstractBeanDefinition

toString

public String toString()

Overrides:

toString in class AbstractBeanDefinition