com.thoughtworks.proxy.toys.hotswap

Class HotSwappingInvoker

java.lang.Object

com.thoughtworks.proxy.toys.delegate.DelegatingInvoker

com.thoughtworks.proxy.toys.hotswap.HotSwappingInvoker

All Implemented Interfaces:

Invoker, java.io.Serializable

Direct Known Subclasses:

FailoverInvoker

public class HotSwappingInvoker
extends DelegatingInvoker

A DelegatingInvoker implementation that allows the exchange of the delegate.

Since:

0.1

Author:

Aslak Hellesøy, Paul Hammant, Jörg Schaible

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static interface	HotSwappingInvoker.CycleCheck Internal interface used to detect cyclic swapping activity.

Constructor Summary

Constructors

Constructor and Description
HotSwappingInvoker(java.lang.Class[] types, ProxyFactory proxyFactory, ObjectReference delegateReference, boolean staticTyping) Deprecated. since 0.2, use HotSwappingInvoker(Class[], ProxyFactory, ObjectReference, int)
HotSwappingInvoker(java.lang.Class[] types, ProxyFactory proxyFactory, ObjectReference delegateReference, int delegationMode) Construct a HotSwappingInvoker.

Method Summary

Methods

Modifier and Type	Method and Description
protected java.lang.Object	delegate() Retrieve the delegated object in derived classes.
protected java.lang.Object	hotswap(java.lang.Object newDelegate) Exchange the current delegate.
java.lang.Object	invoke(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args) Invocation of a method of the proxied object.
java.lang.Object	proxy() Create a proxy for this Invoker.

Methods inherited from class com.thoughtworks.proxy.toys.delegate.DelegatingInvoker

equals, getDelegateReference, getMethodToInvoke, getProxyFactory, hashCode, invokeOnDelegate

Methods inherited from class java.lang.Object

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

Constructor Detail

HotSwappingInvoker

public HotSwappingInvoker(java.lang.Class[] types,
                  ProxyFactory proxyFactory,
                  ObjectReference delegateReference,
                  int delegationMode)

Construct a HotSwappingInvoker.

Parameters:

types - the types of the proxy

proxyFactory - the ProxyFactory to use

delegateReference - the ObjectReference with the delegate

delegationMode - MODE_DIRECT or MODE_SIGNATURE

Since:

0.2

HotSwappingInvoker

public HotSwappingInvoker(java.lang.Class[] types,
                  ProxyFactory proxyFactory,
                  ObjectReference delegateReference,
                  boolean staticTyping)

Deprecated. since 0.2, use HotSwappingInvoker(Class[], ProxyFactory, ObjectReference, int)

Construct a HotSwappingInvoker.

Parameters:

types - the types of the proxy

proxyFactory - the ProxyFactory to use

delegateReference - the ObjectReference with the delegate

staticTyping - STATIC_TYPING or DYNAMIC_TYPING

Since:

0.1

Method Detail

invoke

public java.lang.Object invoke(java.lang.Object proxy,
                      java.lang.reflect.Method method,
                      java.lang.Object[] args)
                        throws java.lang.Throwable

Description copied from interface: Invoker

Invocation of a method of the proxied object.

Specified by:

invoke in interface Invoker

Overrides:

invoke in class DelegatingInvoker

Parameters:

proxy - the proxy instance.

method - the method to invoke.

args - the arguments of the mothod.

Returns:

the result of the onvoked method.

Throws:

java.lang.Throwable - if the invoked method has thrown.

delegate

protected java.lang.Object delegate()

Description copied from class: DelegatingInvoker

Retrieve the delegated object in derived classes.

Overrides:

delegate in class DelegatingInvoker

Returns:

the delegated object

hotswap

protected java.lang.Object hotswap(java.lang.Object newDelegate)

Exchange the current delegate.

Parameters:

newDelegate - the new delegate

Returns:

the old delegate

Throws:

java.lang.IllegalStateException - if cyclic swapping action is detected

Since:

0.1

proxy

public java.lang.Object proxy()

Create a proxy for this Invoker. The proxy implements all the types given as parameter to the constructor and implements additionally the Swappable interface.

Returns:

the new proxy

Since:

0.1