org.apache.tapestry.binding
Class BeanBinding

java.lang.Object
  org.apache.tapestry.binding.AbstractBinding
      org.apache.tapestry.binding.BeanBinding

All Implemented Interfaces:

org.apache.hivemind.Locatable, IBinding

public class BeanBinding
extends AbstractBinding

Binding whose value is a named bean provided by a component.

Since:

4.0

Author:

Howard M. Lewis Ship

Field Summary

Fields inherited from class org.apache.tapestry.binding.AbstractBinding

_description

Constructor Summary

BeanBinding(String description, ValueConverter valueConverter, org.apache.hivemind.Location location, IComponent component, String beanName)

Method Summary

Object	getComponent() Returns the component to which this binding is connected; this is currently only used when building certain exceptions.
Object	getObject() Returns the value of this binding.
boolean	isInvariant() Beans obtained via the binding should *not* be cached by the component because beans may be discarded inside the BeanProvider based on the life cycle of the bean.

Methods inherited from class org.apache.tapestry.binding.AbstractBinding

createReadOnlyBindingException, extendDescription, getDescription, getLocation, getObject, getValueConverter, setObject, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

BeanBinding

public BeanBinding(String description,
                   ValueConverter valueConverter,
                   org.apache.hivemind.Location location,
                   IComponent component,
                   String beanName)

Method Detail

isInvariant

public boolean isInvariant()

Beans obtained via the binding should *not* be cached by the component because beans may be discarded inside the BeanProvider based on the life cycle of the bean. The BeanProvider caches beans as well.

Specified by:

isInvariant in interface IBinding

Overrides:

isInvariant in class AbstractBinding

getComponent

public Object getComponent()

Description copied from class: AbstractBinding

Returns the component to which this binding is connected; this is currently only used when building certain exceptions. This implementation returns null.

Overrides:

getComponent in class AbstractBinding

Returns:

The IComponent object this binding is set against.

getObject

public Object getObject()

Description copied from interface: IBinding

Returns the value of this binding. This is the essential method.