org.springframework.binding.value.support
Class ValueHolder

java.lang.Object
  org.springframework.binding.value.support.AbstractPropertyChangePublisher
      org.springframework.binding.value.support.AbstractValueModel
          org.springframework.binding.value.support.ValueHolder

All Implemented Interfaces:

PropertyChangePublisher, ValueModel

Direct Known Subclasses:

RefreshableValueHolder

public class ValueHolder
extends AbstractValueModel

A simple value model that contains a single value. Notifies listeners when the contained value changes.

Author:

Keith Donald, Karsten Lentzsch

Field Summary

Fields inherited from class org.springframework.binding.value.support.AbstractValueModel

logger

Fields inherited from interface org.springframework.binding.value.ValueModel

VALUE_PROPERTY

Constructor Summary

ValueHolder()
Constructs a ValueHolder with null as initial value.

ValueHolder(Object value)
Constructs a ValueHolder with the given initial value.

Method Summary

Object	getValue() Returns this model's value.
void	setValue(Object value) Sets a new value and if the value has changed notifies any registered value change listeners.
String	toString()

Methods inherited from class org.springframework.binding.value.support.AbstractValueModel

addValueChangeListener, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChange, fireValueChangeEvent, fireValueChangeWhenStillEqual, getValueChangeDetector, hasValueChanged, removeValueChangeListener, setValueChangeDetector, setValueSilently

Methods inherited from class org.springframework.binding.value.support.AbstractPropertyChangePublisher

addPropertyChangeListener, addPropertyChangeListener, addVetoableChangeListener, addVetoableChangeListener, firePropertiesChanged, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, fireVetoableChange, getPropertyChangeListeners, getPropertyChangeListeners, getVetoableChangeListeners, getVetoableChangeListeners, hasChanged, hasChanged, hasChanged, hasChanged, hasChanged, hasChanged, removePropertyChangeListener, removePropertyChangeListener, removeVetoableChangeListener, removeVetoableChangeListener

Methods inherited from class java.lang.Object

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

Constructor Detail

ValueHolder

public ValueHolder()

Constructs a ValueHolder with null as initial value.

ValueHolder

public ValueHolder(Object value)

Constructs a ValueHolder with the given initial value.

Parameters:

value - the initial value

Method Detail

getValue

public Object getValue()

Description copied from interface: ValueModel

Returns this model's value. In case of a write-only value, implementers may choose to either reject this operation or or return null or any other appropriate value.

Returns:

this model's value

setValue

public void setValue(Object value)

Description copied from interface: ValueModel

Sets a new value and if the value has changed notifies any registered value change listeners.

Parameters:

value - the value to be set

toString

public String toString()

Overrides:

toString in class Object