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, Juergen Hoeller

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

Constructors

Constructor and Description
DefaultIntroductionAdvisor(Advice advice) Create a DefaultIntroductionAdvisor for the given advice.
DefaultIntroductionAdvisor(Advice advice, IntroductionInfo introductionInfo) Create a DefaultIntroductionAdvisor for the given advice.
DefaultIntroductionAdvisor(DynamicIntroductionAdvice advice, Class<?> intf) Create a DefaultIntroductionAdvisor for the given advice.

Method Summary

Modifier and Type	Method and Description
void	addInterface(Class<?> intf) Add the specified interface to the list of interfaces to introduce.
boolean	equals(Object other)
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.
int	hashCode()
boolean	isPerInstance() Return whether this advice is associated with a particular instance (for example, creating a mixin) or shared with all instances of the advised class obtained from the same Spring bean factory.
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? Invoked before adding an IntroductionAdvisor.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultIntroductionAdvisor

public DefaultIntroductionAdvisor(Advice advice)

Create a DefaultIntroductionAdvisor for the given advice.

Parameters:

advice - the Advice to apply (may implement the IntroductionInfo interface)

See Also:

addInterface(java.lang.Class<?>)

DefaultIntroductionAdvisor

public DefaultIntroductionAdvisor(Advice advice,
                                  IntroductionInfo introductionInfo)

Create a DefaultIntroductionAdvisor for the given advice.

Parameters:

advice - the Advice to apply

introductionInfo - the IntroductionInfo that describes the interface to introduce (may be null)

DefaultIntroductionAdvisor

public DefaultIntroductionAdvisor(DynamicIntroductionAdvice advice,
                                  Class<?> intf)

Create a DefaultIntroductionAdvisor for the given advice.

Parameters:

advice - the Advice to apply

intf - the interface to introduce

Method Detail

addInterface

public void addInterface(Class<?> intf)

Add the specified interface to the list of interfaces to introduce.

Parameters:

intf - the interface to introduce

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

Returns:

the introduced interfaces

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

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, with Integer.MAX_VALUE indicating the greatest value. Same order values will result in arbitrary positions for the affected objects.

Higher values can be interpreted as lower priority. As a consequence, the object with the lowest value has highest priority (somewhat analogous to Servlet "load-on-startup" values).

Specified by:

getOrder in interface Ordered

Returns:

the order value

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

isPerInstance

public boolean isPerInstance()

Description copied from interface: Advisor

Return whether this advice is associated with a particular instance (for example, creating a mixin) or shared with all instances of the advised class obtained from the same Spring bean factory.

Note that this method is not currently used by the framework. Typical Advisor implementations always return true. Use singleton/prototype bean definitions or appropriate programmatic proxy creation to ensure that Advisors have the correct lifecycle model.

Specified by:

isPerInstance in interface Advisor

Returns:

whether this advice is associated with a particular target instance

getClassFilter

public ClassFilter getClassFilter()

Description copied from interface: IntroductionAdvisor

Return the filter determining which target classes this introduction should apply to.

This represents the class part of a pointcut. Note that method matching doesn't make sense to introductions.

Specified by:

getClassFilter in interface IntroductionAdvisor

Returns:

the class filter

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 - the candidate target class

Returns:

whether the advice should apply to the given target class

equals

public boolean equals(Object other)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object