com.prosysopc.ua.server.nodes

Class ReflectionCallback

java.lang.Object

com.prosysopc.ua.server.nodes.ReflectionCallback

All Implemented Interfaces:

UaVariableCallback

public class ReflectionCallback
extends Object
implements UaVariableCallback

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	LAZY_INIT A global flag which determines whether the reflective property getters and setters are initialized only upon first use.

Constructor Summary

Constructors

Constructor and Description
ReflectionCallback(Object object, String propertyName)

Method Summary

Modifier and Type	Method and Description
Object	getValue()
boolean	setValue(Object newValue)

Methods inherited from class java.lang.Object

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

Field Detail

LAZY_INIT

public static boolean LAZY_INIT

A global flag which determines whether the reflective property getters and setters are initialized only upon first use. The alternative is to initialize them when the ReflectiveVariable is created, which enables error-checking upon property creation, instead of when the property is first accessed from a UA client.

The option is not set by default, to give more emphasis on earlier error checking. set it on, once you have checked your application and you know that all properties are OK, and you can safely give it a small performance boost by limiting the initialization to those properties that are actually used.

Constructor Detail

ReflectionCallback

public ReflectionCallback(Object object,
                          String propertyName)
                   throws SecurityException,
                          NoSuchMethodException

Parameters:

object -

propertyName -

Throws:

NoSuchMethodException

SecurityException

Method Detail

getValue

public Object getValue()
                throws StatusException

Specified by:

getValue in interface UaVariableCallback

Returns:

the current value of the variable.

Throws:

StatusException - if the value is not available. Set the StatusCode to what should be provided.

setValue

public boolean setValue(Object newValue)
                 throws StatusException

Specified by:

setValue in interface UaVariableCallback

Parameters:

newValue - the new value to set for the variable.

Returns:

true if the value was changed

Throws:

StatusException - if the value cannot or may not be written