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## org.springframework.aop.support
Class IntroductionInfoSupport

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

All Implemented Interfaces:
  Serializable, IntroductionInfo

Direct Known Subclasses:
  DelegatePerTargetObjectIntroductionInterceptor, DelegatingIntroductionInterceptor

    public class IntroductionInfoSupport

extends Object
implements IntroductionInfo, Serializable

Support for implementations of `IntroductionInfo`.

Allows subclasses to conveniently add all interfaces from a given object, and to suppress interfaces that should not be added. Also allows for querying all introduced interfaces.

Author:
  Rod Johnson, Juergen Hoeller
See Also:
  Serialized Form

Field Summary
`protected Set<Class>` | `publishedInterfaces`

Constructor Summary
`IntroductionInfoSupport()`

Method Summary
`Class[]` | `getInterfaces()` Return the additional interfaces introduced by this Advisor or Advice.
`protected void` | `implementInterfacesOnObject(Object delegate)` Publish all interfaces that the given delegate implements at the proxy level.
`boolean` | `implementsInterface(Class ifc)` Check whether the specified interfaces is a published introduction interface.
`protected boolean` | `isMethodOnIntroducedInterface(MethodInvocation mi)` Is this method on an introduced interface?
`void` | `suppressInterface(Class intf)` Suppress the specified interface, which may have been autodetected due to the delegate implementing it.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### publishedInterfaces

    protected final Set<Class> publishedInterfaces

Constructor Detail

### IntroductionInfoSupport

    public IntroductionInfoSupport()

Method Detail

### suppressInterface

    public void suppressInterface(Class intf)

  Suppress the specified interface, which may have been autodetected due to the delegate implementing it. Call this method to exclude internal interfaces from being visible at the proxy level.

  Does nothing if the interface is not implemented by the delegate.

  Parameters:
    `intf` - the interface to suppress

### 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

### implementsInterface

    public boolean implementsInterface(Class ifc)

  Check whether the specified interfaces is a published introduction interface.

  Parameters:
    `ifc` - the interface to check
  Returns:
    whether the interface is part of this introduction

### implementInterfacesOnObject

    protected void implementInterfacesOnObject(Object delegate)

  Publish all interfaces that the given delegate implements at the proxy level.

  Parameters:
    `delegate` - the delegate object

### isMethodOnIntroducedInterface

    protected final boolean isMethodOnIntroducedInterface(MethodInvocation mi)

  Is this method on an introduced interface?

  Parameters:
    `mi` - the method invocation
  Returns:
    whether the invoked method is on an introduced interface

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