org.springframework.aop.aspectj

Class SingletonAspectInstanceFactory

java.lang.Object

org.springframework.aop.aspectj.SingletonAspectInstanceFactory

All Implemented Interfaces:

java.io.Serializable, AspectInstanceFactory, Ordered

Direct Known Subclasses:

SingletonMetadataAwareAspectInstanceFactory

public class SingletonAspectInstanceFactory
extends java.lang.Object
implements AspectInstanceFactory, java.io.Serializable

Implementation of AspectInstanceFactory that is backed by a specified singleton object, returning the same instance for every getAspectInstance() call.

Since:

2.0

Author:

Rod Johnson, Juergen Hoeller

See Also:

SimpleAspectInstanceFactory, Serialized Form

Field Summary

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

Constructors

Constructor and Description
SingletonAspectInstanceFactory(java.lang.Object aspectInstance) Create a new SingletonAspectInstanceFactory for the given aspect instance.

Method Summary

Modifier and Type	Method and Description
java.lang.ClassLoader	getAspectClassLoader() Expose the aspect class loader that this factory uses.
java.lang.Object	getAspectInstance() Create an instance of this factory's aspect.
int	getOrder() Determine the order for this factory's aspect instance, either an instance-specific order expressed through implementing the Ordered interface, or a fallback order.
protected int	getOrderForAspectClass(java.lang.Class<?> aspectClass) Determine a fallback order for the case that the aspect instance does not express an instance-specific order through implementing the Ordered interface.

Methods inherited from class java.lang.Object

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

Constructor Detail

SingletonAspectInstanceFactory

public SingletonAspectInstanceFactory(java.lang.Object aspectInstance)

Create a new SingletonAspectInstanceFactory for the given aspect instance.

Parameters:

aspectInstance - the singleton aspect instance

Method Detail

getAspectInstance

public final java.lang.Object getAspectInstance()

Description copied from interface: AspectInstanceFactory

Create an instance of this factory's aspect.

Specified by:

getAspectInstance in interface AspectInstanceFactory

Returns:

the aspect instance (never null)

getAspectClassLoader

@Nullable
public java.lang.ClassLoader getAspectClassLoader()

Description copied from interface: AspectInstanceFactory

Expose the aspect class loader that this factory uses.

Specified by:

getAspectClassLoader in interface AspectInstanceFactory

Returns:

the aspect class loader (or null for the bootstrap loader)

See Also:

ClassUtils.getDefaultClassLoader()

getOrder

public int getOrder()

Determine the order for this factory's aspect instance, either an instance-specific order expressed through implementing the Ordered interface, or a fallback order.

Specified by:

getOrder in interface Ordered

Returns:

the order value

See Also:

Ordered, getOrderForAspectClass(java.lang.Class<?>)

getOrderForAspectClass

protected int getOrderForAspectClass(java.lang.Class<?> aspectClass)

Determine a fallback order for the case that the aspect instance does not express an instance-specific order through implementing the Ordered interface.

The default implementation simply returns Ordered.LOWEST_PRECEDENCE.

Parameters:

aspectClass - the aspect class