org.springframework.aop.support
Class DefaultIntroductionAdvisor

java.lang.Object
  org.springframework.aop.support.DefaultIntroductionAdvisor

All Implemented Interfaces:

Serializable, Advisor, ClassFilter, IntroductionAdvisor, IntroductionInfo, Ordered

public class DefaultIntroductionAdvisor
extends Object
implements IntroductionAdvisor, ClassFilter, Ordered, Serializable

Simple IntroductionAdvisor implementation that by default applies to any class.

Since:

11.11.2003

Author:

Rod Johnson

See Also:

Serialized Form

Field Summary

Fields inherited from interface org.springframework.aop.ClassFilter

TRUE

Fields inherited from interface org.springframework.core.Ordered

HIGHEST_PRECEDENCE, LOWEST_PRECEDENCE

Constructor Summary

DefaultIntroductionAdvisor(Advice advice)

DefaultIntroductionAdvisor(Advice advice, IntroductionInfo introductionInfo)

DefaultIntroductionAdvisor(DynamicIntroductionAdvice advice, Class clazz)

Method Summary

void	addInterface(Class intf)
Advice	getAdvice() Return the advice part of this aspect.
ClassFilter	getClassFilter() Return the filter determining which target classes this introduction should apply to.
Class[]	getInterfaces() Return the additional interfaces introduced by this Advisor or Advice.
int	getOrder() Return the order value of this object, with a higher value meaning greater in terms of sorting.
boolean	isPerInstance() Default for an introduction is per-instance interception.
boolean	matches(Class clazz) Should the pointcut apply to the given interface or target class?
void	setOrder(int order)
String	toString()
void	validateInterfaces() Can the advised interfaces be implemented by the introduction advice?

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultIntroductionAdvisor

public DefaultIntroductionAdvisor(Advice advice)

DefaultIntroductionAdvisor

public DefaultIntroductionAdvisor(DynamicIntroductionAdvice advice,
                                  Class clazz)

DefaultIntroductionAdvisor

public DefaultIntroductionAdvisor(Advice advice,
                                  IntroductionInfo introductionInfo)

Method Detail

setOrder

public void setOrder(int order)

getOrder

public int getOrder()

Description copied from interface: Ordered

Return the order value of this object, with a higher value meaning greater in terms of sorting.

Normally starting with 0 or 1, with Ordered.LOWEST_PRECEDENCE indicating greatest. Same order values will result in arbitrary positions for the affected objects.

Higher value can be interpreted as lower priority, consequently the first object has highest priority (somewhat analogous to Servlet "load-on-startup" values).

Note that order values below 0 are reserved for framework purposes. Application-specified values should always be 0 or greater, with only framework components (internal or third-party) supposed to use lower values.

Specified by:

getOrder in interface Ordered

Returns:

the order value

See Also:

Ordered.LOWEST_PRECEDENCE

addInterface

public void addInterface(Class intf)

getClassFilter

public ClassFilter getClassFilter()

Description copied from interface: IntroductionAdvisor

Return the filter determining which target classes this introduction should apply to. The class part of a pointcut. Note that method matching doesn't make sense to introductions.

Specified by:

getClassFilter in interface IntroductionAdvisor

getAdvice

public Advice getAdvice()

Description copied from interface: Advisor

Return the advice part of this aspect. An advice may be an interceptor, a before advice, a throws advice, etc.

Specified by:

getAdvice in interface Advisor

Returns:

the advice that should apply if the pointcut matches

See Also:

MethodInterceptor, BeforeAdvice, ThrowsAdvice, AfterReturningAdvice

getInterfaces

public Class[] getInterfaces()

Description copied from interface: IntroductionInfo

Return the additional interfaces introduced by this Advisor or Advice.

Specified by:

getInterfaces in interface IntroductionInfo

matches

public boolean matches(Class clazz)

Description copied from interface: ClassFilter

Should the pointcut apply to the given interface or target class?

Specified by:

matches in interface ClassFilter

Parameters:

clazz - candidate target class

Returns:

whether the advice should apply to this candidate target class

isPerInstance

public boolean isPerInstance()

Default for an introduction is per-instance interception.

Specified by:

isPerInstance in interface Advisor

validateInterfaces

public void validateInterfaces()
                        throws IllegalArgumentException

Description copied from interface: IntroductionAdvisor

Can the advised interfaces be implemented by the introduction advice? Invoked before adding an IntroductionAdvisor.

Specified by:

validateInterfaces in interface IntroductionAdvisor

Throws:

IllegalArgumentException - if the advised interfaces can't be implemented by the introduction advice.

toString

public String toString()

Overrides:

toString in class Object