org.springframework.webflow.util
Class DispatchMethodInvoker

java.lang.Object
  org.springframework.webflow.util.DispatchMethodInvoker

public class DispatchMethodInvoker
extends java.lang.Object

Invoker and cache for dispatch methods that all share the same target object. The dispatch methods typically share the same form, but multiple exist per target object, and they only differ in name.

Author:

Keith Donald, Ben Hale

Nested Class Summary

static class

DispatchMethodInvoker.MethodLookupException Thrown when a dispatch method could not be resolved.

Constructor Summary

DispatchMethodInvoker(java.lang.Object target, java.lang.Class[] parameterTypes)
Creates a dispatch method invoker.

Method Summary

java.lang.Class[]	getParameterTypes() Returns the parameter types defining the argument signature of the dispatch methods.
java.lang.Object	getTarget() Returns the target object method calls are dispatched to.
java.lang.Object	invoke(java.lang.String methodName, java.lang.Object[] arguments) Dispatch a call with given arguments to named dispatcher method.

Methods inherited from class java.lang.Object

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

Constructor Detail

DispatchMethodInvoker

public DispatchMethodInvoker(java.lang.Object target,
                             java.lang.Class[] parameterTypes)

Creates a dispatch method invoker.

Parameters:

target - the target to dispatch to

parameterTypes - the parameter types defining the argument signature of the dispatch methods

Method Detail

getTarget

public java.lang.Object getTarget()

Returns the target object method calls are dispatched to.

getParameterTypes

public java.lang.Class[] getParameterTypes()

Returns the parameter types defining the argument signature of the dispatch methods.

invoke

public java.lang.Object invoke(java.lang.String methodName,
                               java.lang.Object[] arguments)
                        throws DispatchMethodInvoker.MethodLookupException,
                               java.lang.Exception

Dispatch a call with given arguments to named dispatcher method.

Parameters:

methodName - the name of the method to invoke

arguments - the arguments to pass to the method

Returns:

the result of the method invokation

Throws:

DispatchMethodInvoker.MethodLookupException - when the method cannot be resolved

DispatchMethodInvoker.MethodLookupException - when the invoked method throws an exception

java.lang.Exception