public class

ReflectiveMethodInvocation

extends Object
implements Cloneable ProxyMethodInvocation
java.lang.Object
   ↳ org.springframework.aop.framework.ReflectiveMethodInvocation

Class Overview

Spring's implementation of the AOP Alliance org.aopalliance.intercept.MethodInvocation interface, implementing the extended ProxyMethodInvocation interface.

Invokes the target object using reflection. Subclasses can override the invokeJoinpoint() method to change this behavior, so this is also a useful base class for more specialized MethodInvocation implementations.

It is possible to clone an invocation, to invoke proceed() repeatedly (once per clone), using the invocableClone() method. It is also possible to attach custom attributes to the invocation, using the setUserAttribute(String, Object) / getUserAttribute(String) methods.

NOTE: This class is considered internal and should not be directly accessed. The sole reason for it being public is compatibility with existing framework integrations (e.g. Pitchfork). For any other purposes, use the ProxyMethodInvocation interface instead.

See Also

Summary

Fields
protected Object[] arguments
protected final List interceptorsAndDynamicMethodMatchers List of MethodInterceptor and InterceptorAndDynamicMethodMatcher that need dynamic checks.
protected final Method method
protected final Object proxy
protected final Object target
Protected Constructors
ReflectiveMethodInvocation(Object proxy, Object target, Method method, Object[] arguments, Class targetClass, List<Object> interceptorsAndDynamicMethodMatchers)
Construct a new ReflectiveMethodInvocation with the given arguments.
Public Methods
final Object[] getArguments()
final Method getMethod()
Return the method invoked on the proxied interface.
final Object getProxy()
Return the proxy that this method invocation was made through.
final AccessibleObject getStaticPart()
final Object getThis()
Object getUserAttribute(String key)
Return the value of the specified user attribute.
Map<String, Object> getUserAttributes()
Return user attributes associated with this invocation.
MethodInvocation invocableClone()
This implementation returns a shallow copy of this invocation object, including an independent copy of the original arguments array.
MethodInvocation invocableClone(Object[] arguments)
This implementation returns a shallow copy of this invocation object, using the given arguments array for the clone.
Object proceed()
void setArguments(Object[] arguments)
Set the arguments to be used on subsequent invocations in the any advice in this chain.
void setUserAttribute(String key, Object value)
Add the specified user attribute with the given value to this invocation.
String toString()
Protected Methods
Object invokeJoinpoint()
Invoke the joinpoint using reflection.
[Expand]
Inherited Methods
From class java.lang.Object
From interface org.springframework.aop.ProxyMethodInvocation

Fields

protected Object[] arguments

protected final List interceptorsAndDynamicMethodMatchers

List of MethodInterceptor and InterceptorAndDynamicMethodMatcher that need dynamic checks.

protected final Method method

protected final Object proxy

protected final Object target

Protected Constructors

protected ReflectiveMethodInvocation (Object proxy, Object target, Method method, Object[] arguments, Class targetClass, List<Object> interceptorsAndDynamicMethodMatchers)

Construct a new ReflectiveMethodInvocation with the given arguments.

Parameters
proxy the proxy object that the invocation was made on
target the target object to invoke
method the method to invoke
arguments the arguments to invoke the method with
targetClass the target class, for MethodMatcher invocations
interceptorsAndDynamicMethodMatchers interceptors that should be applied, along with any InterceptorAndDynamicMethodMatchers that need evaluation at runtime. MethodMatchers included in this struct must already have been found to have matched as far as was possibly statically. Passing an array might be about 10% faster, but would complicate the code. And it would work only for static pointcuts.

Public Methods

public final Object[] getArguments ()

public final Method getMethod ()

Return the method invoked on the proxied interface. May or may not correspond with a method invoked on an underlying implementation of that interface.

public final Object getProxy ()

Return the proxy that this method invocation was made through.

Returns
  • the original proxy object

public final AccessibleObject getStaticPart ()

public final Object getThis ()

public Object getUserAttribute (String key)

Return the value of the specified user attribute.

Parameters
key the name of the attribute
Returns
  • the value of the attribute, or null if not set

public Map<String, Object> getUserAttributes ()

Return user attributes associated with this invocation. This method provides an invocation-bound alternative to a ThreadLocal.

This map is initialized lazily and is not used in the AOP framework itself.

Returns
  • any user attributes associated with this invocation (never null)

public MethodInvocation invocableClone ()

This implementation returns a shallow copy of this invocation object, including an independent copy of the original arguments array.

We want a shallow copy in this case: We want to use the same interceptor chain and other object references, but we want an independent value for the current interceptor index.

Returns
  • an invocable clone of this invocation. proceed() can be called once per clone.
See Also

public MethodInvocation invocableClone (Object[] arguments)

This implementation returns a shallow copy of this invocation object, using the given arguments array for the clone.

We want a shallow copy in this case: We want to use the same interceptor chain and other object references, but we want an independent value for the current interceptor index.

Parameters
arguments the arguments that the cloned invocation is supposed to use, overriding the original arguments
Returns
  • an invocable clone of this invocation. proceed() can be called once per clone.
See Also

public Object proceed ()

Throws
Throwable

public void setArguments (Object[] arguments)

Set the arguments to be used on subsequent invocations in the any advice in this chain.

Parameters
arguments the argument array

public void setUserAttribute (String key, Object value)

Add the specified user attribute with the given value to this invocation.

Such attributes are not used within the AOP framework itself. They are just kept as part of the invocation object, for use in special interceptors.

Parameters
key the name of the attribute
value the value of the attribute, or null to reset it

public String toString ()

Protected Methods

protected Object invokeJoinpoint ()

Invoke the joinpoint using reflection. Subclasses can override this to use custom invocation.

Returns
  • the return value of the joinpoint
Throws
Throwable if invoking the joinpoint resulted in an exception