de.smartics.properties.spi.config.proxy
Class PropertiesProxyInvocationHandler

java.lang.Object
  de.smartics.properties.spi.config.proxy.PropertiesProxyInvocationHandler

All Implemented Interfaces:

Serializable, InvocationHandler

public final class PropertiesProxyInvocationHandler
     
     

      
      extends 
      
      Object
     
     
     
     

      
      implements 
      
      InvocationHandler, 
      
      Serializable
     
     

The invocation handler receives every method invocation on the proxy that is wrapped over the properties interface. It analyzes the intent of this method call and provides (calculates) the return value. The main task is to detect whether a value, a property key or a property description has to be returned. After this decision making the task to calculate the return value is delegated to a specialized class.

See Also:

Serialized Form

Constructor Summary

PropertiesProxyInvocationHandler(SerializableConfigurationProperties configurationProperties)
Default constructor.

Method Summary

Object

invoke(Object proxy, Method method, Object[] args)

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertiesProxyInvocationHandler

public PropertiesProxyInvocationHandler(SerializableConfigurationProperties configurationProperties)
                                 throws NullPointerException

Default constructor.

Parameters:

configurationProperties - the configuration properties on that the method calls are delegated.

Throws:

NullPointerException - if configurationProperties is null.

Method Detail

invoke

public Object invoke(Object proxy,
                     Method method,
                     Object[] args)
              throws InvalidArgumentsException

Specified by:

invoke in interface InvocationHandler

Throws:

InvalidArgumentsException - when arguments are passed. Only no arg methods are supported.

See Also:

InvocationHandler.invoke(java.lang.Object, java.lang.reflect.Method, java.lang.Object[])