com.atomikos.util

Class DynamicProxySupport<RequiredInterfaceType>

java.lang.Object

com.atomikos.util.DynamicProxySupport<RequiredInterfaceType>

All Implemented Interfaces:

java.lang.reflect.InvocationHandler

public abstract class DynamicProxySupport<RequiredInterfaceType>
extends java.lang.Object
implements java.lang.reflect.InvocationHandler

Abstract reusable logic for easy dynamic proxy creation. Subclasses can have 'overriding' methods annotated with @Proxied to implement custom logic for a given interface. IMPORTANT: subclasses and proxied methods must be PUBLIC in scope for this to work! In addition, subclasses should override toString with descriptive information so logging is clear.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	closed
protected RequiredInterfaceType	delegate
protected java.util.Map<java.lang.String,java.lang.reflect.Method>	proxiedMethods

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DynamicProxySupport(RequiredInterfaceType delegate)

Method Summary

Modifier and Type	Method and Description
protected java.lang.Object	callNativeMethod(java.lang.reflect.Method method, java.lang.Object... args) Delegates the call to the native method in the delegate.
RequiredInterfaceType	createDynamicProxy()
protected java.util.Deque<java.lang.ClassLoader>	getClassLoadersToTry()
protected java.lang.Class<?>[]	getInterfaceClasses()
protected java.lang.Class<RequiredInterfaceType>	getRequiredInterfaceType()
protected abstract void	handleInvocationException(java.lang.Throwable e) Down-call to handle exceptions after an invocation.
java.lang.Object	invoke(java.lang.Object proxy, java.lang.reflect.Method method, java.lang.Object[] args)
void	markClosed()
protected abstract void	throwInvocationAfterClose(java.lang.String method)

Methods inherited from class java.lang.Object

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

Field Detail

closed

protected boolean closed

delegate

protected final RequiredInterfaceType delegate

proxiedMethods

protected final java.util.Map<java.lang.String,java.lang.reflect.Method> proxiedMethods

Constructor Detail

DynamicProxySupport

protected DynamicProxySupport(RequiredInterfaceType delegate)

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

Specified by:

invoke in interface java.lang.reflect.InvocationHandler

Throws:

java.lang.Throwable

handleInvocationException

protected abstract void handleInvocationException(java.lang.Throwable e)
                                           throws java.lang.Throwable

Down-call to handle exceptions after an invocation. Implementations should decide on whether to mark the proxy as erroneous and whether or not to re-throw.

Parameters:

e -

Throws:

java.lang.Throwable

throwInvocationAfterClose

protected abstract void throwInvocationAfterClose(java.lang.String method)
                                           throws java.lang.Exception

Throws:

java.lang.Exception

callNativeMethod

protected java.lang.Object callNativeMethod(java.lang.reflect.Method method,
                                            java.lang.Object... args)
                                     throws java.lang.Throwable

Delegates the call to the native method in the delegate. This method can safely be reused in subclasses when needed.

Parameters:

method -

args -

Returns:

Throws:

java.lang.Throwable

createDynamicProxy

public RequiredInterfaceType createDynamicProxy()

getClassLoadersToTry

protected java.util.Deque<java.lang.ClassLoader> getClassLoadersToTry()

getRequiredInterfaceType

protected java.lang.Class<RequiredInterfaceType> getRequiredInterfaceType()

markClosed

public void markClosed()

getInterfaceClasses

protected java.lang.Class<?>[] getInterfaceClasses()