Package org.springframework.beans.factory.support

Class SimpleInstantiationStrategy

java.lang.Object

org.springframework.beans.factory.support.SimpleInstantiationStrategy

All Implemented Interfaces:

InstantiationStrategy

Direct Known Subclasses:

CglibSubclassingInstantiationStrategy

public class SimpleInstantiationStrategy
extends Object
implements InstantiationStrategy

Simple object instantiation strategy for use in a BeanFactory.

Does not support Method Injection, although it provides hooks for subclasses to override to add Method Injection support, for example by overriding methods.

Since:

1.1

Author:

Rod Johnson, Juergen Hoeller

Constructor Summary

Constructors

Constructor	Description
SimpleInstantiationStrategy()

Method Summary

Modifier and Type	Method	Description
static Method	getCurrentlyInvokedFactoryMethod()	Return the factory method currently being invoked or null if none.
Object	instantiate(RootBeanDefinition bd, String beanName, BeanFactory owner)	Return an instance of the bean with the given name in this factory.
Object	instantiate(RootBeanDefinition bd, String beanName, BeanFactory owner, Object factoryBean, Method factoryMethod, Object... args)	Return an instance of the bean with the given name in this factory, creating it via the given factory method.
Object	instantiate(RootBeanDefinition bd, String beanName, BeanFactory owner, Constructor<?> ctor, Object... args)	Return an instance of the bean with the given name in this factory, creating it via the given constructor.
protected Object	instantiateWithMethodInjection(RootBeanDefinition bd, String beanName, BeanFactory owner)	Subclasses can override this method, which is implemented to throw UnsupportedOperationException, if they can instantiate an object with the Method Injection specified in the given RootBeanDefinition.
protected Object	instantiateWithMethodInjection(RootBeanDefinition bd, String beanName, BeanFactory owner, Constructor<?> ctor, Object... args)	Subclasses can override this method, which is implemented to throw UnsupportedOperationException, if they can instantiate an object with the Method Injection specified in the given RootBeanDefinition.

Methods inherited from class java.lang.Object

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

Constructor Details

SimpleInstantiationStrategy

public SimpleInstantiationStrategy()

Method Details

getCurrentlyInvokedFactoryMethod

@Nullable
public static Method getCurrentlyInvokedFactoryMethod()

Return the factory method currently being invoked or null if none.

Allows factory method implementations to determine whether the current caller is the container itself as opposed to user code.

instantiate

public Object instantiate(RootBeanDefinition bd,
 @Nullable
 String beanName,
 BeanFactory owner)

Description copied from interface: InstantiationStrategy

Return an instance of the bean with the given name in this factory.

Specified by:

instantiate in interface InstantiationStrategy

Parameters:

bd - the bean definition

beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.

owner - the owning BeanFactory

Returns:

a bean instance for this bean definition

instantiateWithMethodInjection

protected Object instantiateWithMethodInjection(RootBeanDefinition bd,
 @Nullable
 String beanName,
 BeanFactory owner)

Subclasses can override this method, which is implemented to throw UnsupportedOperationException, if they can instantiate an object with the Method Injection specified in the given RootBeanDefinition. Instantiation should use a no-arg constructor.

instantiate

public Object instantiate(RootBeanDefinition bd,
 @Nullable
 String beanName,
 BeanFactory owner,
 Constructor<?> ctor,
 Object... args)

Description copied from interface: InstantiationStrategy

Return an instance of the bean with the given name in this factory, creating it via the given constructor.

Specified by:

instantiate in interface InstantiationStrategy

Parameters:

bd - the bean definition

beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.

owner - the owning BeanFactory

ctor - the constructor to use

args - the constructor arguments to apply

Returns:

a bean instance for this bean definition

instantiateWithMethodInjection

protected Object instantiateWithMethodInjection(RootBeanDefinition bd,
 @Nullable
 String beanName,
 BeanFactory owner,
 @Nullable
 Constructor<?> ctor,
 Object... args)

Subclasses can override this method, which is implemented to throw UnsupportedOperationException, if they can instantiate an object with the Method Injection specified in the given RootBeanDefinition. Instantiation should use the given constructor and parameters.

instantiate

public Object instantiate(RootBeanDefinition bd,
 @Nullable
 String beanName,
 BeanFactory owner,
 @Nullable
 Object factoryBean,
 Method factoryMethod,
 Object... args)

Description copied from interface: InstantiationStrategy

Return an instance of the bean with the given name in this factory, creating it via the given factory method.

Specified by:

instantiate in interface InstantiationStrategy

Parameters:

bd - the bean definition

beanName - the name of the bean when it is created in this context. The name can be null if we are autowiring a bean which doesn't belong to the factory.

owner - the owning BeanFactory

factoryBean - the factory bean instance to call the factory method on, or null in case of a static factory method

factoryMethod - the factory method to use

args - the factory method arguments to apply

Returns:

a bean instance for this bean definition