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## org.springframework.aop.aspectj
Class DeclareParentsAdvisor

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

All Implemented Interfaces:
  Advisor, IntroductionAdvisor, IntroductionInfo

    public class DeclareParentsAdvisor

extends java.lang.Object
implements IntroductionAdvisor

Introduction advisor delegating to the given object. Implements AspectJ annotation-style behavior for the DeclareParents annotation.

Since:
  2.0
Author:
  Rod Johnson, Ramnivas Laddad

Constructor Summary
`DeclareParentsAdvisor(java.lang.Class interfaceType, java.lang.String typePattern, java.lang.Class defaultImpl)` Create a new advisor for this DeclareParents field.
`DeclareParentsAdvisor(java.lang.Class interfaceType, java.lang.String typePattern, java.lang.Object delegateRef)` Create a new advisor for this DeclareParents field.

Method Summary
`org.aopalliance.aop.Advice` | `getAdvice()` Return the advice part of this aspect.
`ClassFilter` | `getClassFilter()` Return the filter determining which target classes this introduction should apply to.
`java.lang.Class[]` | `getInterfaces()` Return the additional interfaces introduced by this Advisor or Advice.
`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.
`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, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### DeclareParentsAdvisor

    public DeclareParentsAdvisor(java.lang.Class interfaceType,
                                 java.lang.String typePattern,
                                 java.lang.Class defaultImpl)

  Create a new advisor for this DeclareParents field.

  Parameters:
    `interfaceType` - static field defining the introduction
    `typePattern` - type pattern the introduction is restricted to
    `defaultImpl` - the default implementation class

### DeclareParentsAdvisor

    public DeclareParentsAdvisor(java.lang.Class interfaceType,
                                 java.lang.String typePattern,
                                 java.lang.Object delegateRef)

  Create a new advisor for this DeclareParents field.

  Parameters:
    `interfaceType` - static field defining the introduction
    `typePattern` - type pattern the introduction is restricted to
    `delegateRef` - the delegate implementation object

Method Detail

### 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

### validateInterfaces

    public void validateInterfaces()
                            throws java.lang.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:
    `java.lang.IllegalArgumentException` - if the advised interfaces can't be implemented by the introduction advice

### 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

### getAdvice

    public org.aopalliance.aop.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 java.lang.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

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