org.springframework.binding.value.support
Class RefreshableValueHolder

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

All Implemented Interfaces:

PropertyChangePublisher, ValueModel

public class RefreshableValueHolder
extends ValueHolder

ValueModel adding a refreshable aspect. A Closure is given that may be executed using the refresh() method or forced to be executed on every getValue(). The given refresh Closure is used to set the value before reading it.

Author:

Keith Donald

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

RefreshableValueHolder(Closure refreshFunction)
Constructor supplying a refresh Closure.

RefreshableValueHolder(Closure refreshFunction, boolean alwaysRefresh)
Constructor supplying a refresh Closure that allways has to be triggered when reading the value.

RefreshableValueHolder(Closure refreshFunction, boolean alwaysRefresh, boolean lazyInit)
Constructor supplying a refresh Closure that allways has to be triggered when reading the value.

Method Summary

Object	getValue() Returns this model's value.
void	refresh() Refresh te value by executing the refresh Closure.

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

setValue, 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

RefreshableValueHolder

public RefreshableValueHolder(Closure refreshFunction)

Constructor supplying a refresh Closure. Refresh has to be triggered manually.

RefreshableValueHolder

public RefreshableValueHolder(Closure refreshFunction,
                              boolean alwaysRefresh)

Constructor supplying a refresh Closure that allways has to be triggered when reading the value.

RefreshableValueHolder

public RefreshableValueHolder(Closure refreshFunction,
                              boolean alwaysRefresh,
                              boolean lazyInit)

Constructor supplying a refresh Closure that allways has to be triggered when reading the value. Additionally a refresh is triggered on construction.

Method Detail

getValue

public Object getValue()

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. If allwaysRefresh is set, this method will trigger refresh() each time it is executed.

Specified by:

getValue in interface ValueModel

Overrides:

getValue in class ValueHolder

Returns:

this model's value

refresh

public void refresh()

Refresh te value by executing the refresh Closure.