de.tsl2.nano.incubation.specification.rules

Class RuleDependencyListener<T,E extends de.tsl2.nano.core.messaging.ChangeEvent>

java.lang.Object

de.tsl2.nano.bean.def.AbstractDependencyListener<T,E>

de.tsl2.nano.incubation.specification.rules.RuleDependencyListener<T,E>

All Implemented Interfaces:

de.tsl2.nano.core.messaging.IListener<E>, de.tsl2.nano.core.messaging.IStatefulListener<E>, Serializable, Cloneable

public class RuleDependencyListener<T,E extends de.tsl2.nano.core.messaging.ChangeEvent>
extends AbstractDependencyListener<T,E>
implements Serializable

dependency listener evaluating its value through a given rule.

Version:

$Revision$

Author:

Tom

See Also:

Serialized Form

Field Summary

Fields inherited from class de.tsl2.nano.bean.def.AbstractDependencyListener

attribute, attributeID, changes, propertyName

Constructor Summary

Constructors

Constructor and Description
RuleDependencyListener() constructor
RuleDependencyListener(IAttributeDefinition<T> attribute, String propertyName, String ruleName) constructor

Method Summary

Modifier and Type	Method and Description
protected T	evaluate(E evt) evaluate a new value through a rule. the events source (a beanvalue) and all parents attributes will be given to the rule as arguments.
void	handleEvent(E event)
protected BeanValue	initAttribute(E source)
String	toString()

Methods inherited from class de.tsl2.nano.bean.def.AbstractDependencyListener

clone, getAttribute, getStateObject, reset, setAttribute, setStateObject

Methods inherited from class java.lang.Object

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

Constructor Detail

RuleDependencyListener

public RuleDependencyListener()

constructor

RuleDependencyListener

public RuleDependencyListener(IAttributeDefinition<T> attribute,
                              String propertyName,
                              String ruleName)

constructor

Parameters:

attribute -

propertyName -

Method Detail

handleEvent

public void handleEvent(E event)

Specified by:

handleEvent in interface de.tsl2.nano.core.messaging.IListener<E extends de.tsl2.nano.core.messaging.ChangeEvent>

evaluate

protected T evaluate(E evt)

evaluate a new value through a rule. the events source (a beanvalue) and all parents attributes will be given to the rule as arguments.

Parameters:

evt - event holding the new foreign value

Returns:

result of executing a rule.

initAttribute

protected BeanValue initAttribute(E source)

toString

public String toString()

Overrides:

toString in class AbstractDependencyListener<T,E extends de.tsl2.nano.core.messaging.ChangeEvent>