## org.springframework.aop.aspectj
Class SingletonAspectInstanceFactory

    java.lang.Object
      org.springframework.aop.aspectj.SingletonAspectInstanceFactory

All Implemented Interfaces:
  AspectInstanceFactory, Ordered

Direct Known Subclasses:
  SingletonMetadataAwareAspectInstanceFactory

    public class SingletonAspectInstanceFactory

extends Object
implements AspectInstanceFactory

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`

Field Summary

Fields inherited from interface org.springframework.core.Ordered
`HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE`

Constructor Summary
`SingletonAspectInstanceFactory(Object aspectInstance)` Create a new SingletonAspectInstanceFactory for the given aspect instance.

Method Summary
`ClassLoader` `getAspectClassLoader()` Expose the aspect class loader that this factory uses.
`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(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(Object aspectInstance)

  Create a new SingletonAspectInstanceFactory for the given aspect instance.

  Parameters:
    `aspectInstance` - the singleton aspect instance

Method Detail

### getAspectInstance

    public final 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

    public 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 (never `null`)

### 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(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