org.apache.tapestry.binding
Class StateBinding

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

All Implemented Interfaces:

org.apache.hivemind.Locatable, IBinding

public class StateBinding
extends AbstractBinding

Binding used to efficiently query whether an application state object (visit, global and friends) exists without actually creating it (or creating a session).

Since:

4.0

Author:

Howard M. Lewis Ship

Field Summary

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

_description

Constructor Summary

StateBinding(String description, ValueConverter valueConverter, org.apache.hivemind.Location location, ApplicationStateManager applicationStateManager, String objectName)

Method Summary

Object	getObject() Returns the value of this binding.
boolean	isInvariant() Returns false; these ASO objects can be created at any time.

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

createReadOnlyBindingException, extendDescription, getComponent, 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

StateBinding

public StateBinding(String description,
                    ValueConverter valueConverter,
                    org.apache.hivemind.Location location,
                    ApplicationStateManager applicationStateManager,
                    String objectName)

Method Detail

isInvariant

public boolean isInvariant()

Returns false; these ASO objects can be created at any time.

Specified by:

isInvariant in interface IBinding

Overrides:

isInvariant in class AbstractBinding

getObject

public Object getObject()

Description copied from interface: IBinding

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