Interface BeanContextChild
- All Known Subinterfaces:
-
BeanContext
,BeanContextServices
- All Known Implementing Classes:
-
BeanContextChildSupport
,BeanContextServicesSupport
,BeanContextSupport
public interface BeanContextChild
JavaBeans wishing to be nested within, and obtain a reference to their execution environment, or context, as defined by the BeanContext sub-interface shall implement this interface.
Conformant BeanContexts shall as a side effect of adding a BeanContextChild object shall pass a reference to itself via the setBeanContext() method of this interface.
Note that a BeanContextChild may refuse a change in state by throwing PropertyVetoedException in response.
In order for persistence mechanisms to function properly on BeanContextChild instances across a broad variety of scenarios, implementing classes of this interface are required to define as transient, any or all fields, or instance variables, that may contain, or represent, references to the nesting BeanContext instance or other resources obtained from the BeanContext via any unspecified mechanisms.
- Since:
- 1.2
- See Also:
-
BeanContext
,PropertyChangeEvent
,PropertyChangeListener
,PropertyVetoException
,VetoableChangeListener
Method Summary
Modifier and Type | Method | Description |
---|---|---|
void | addPropertyChangeListener(String name,
PropertyChangeListener pcl) | Adds a |
void | addVetoableChangeListener(String name,
VetoableChangeListener vcl) | Adds a |
BeanContext | getBeanContext() | Gets the |
void | removePropertyChangeListener(String name,
PropertyChangeListener pcl) | Removes a |
void | removeVetoableChangeListener(String name,
VetoableChangeListener vcl) | Removes a |
void | setBeanContext(BeanContext bc) | Objects that implement this interface, shall fire a java.beans.PropertyChangeEvent, with parameters: propertyName "beanContext", oldValue (the previous nesting |
Method Detail
setBeanContext
void setBeanContext(BeanContext bc) throws PropertyVetoException
Objects that implement this interface, shall fire a java.beans.PropertyChangeEvent, with parameters: propertyName "beanContext", oldValue (the previous nesting BeanContext
instance, or null
), newValue (the current nesting BeanContext
instance, or null
).
A change in the value of the nesting BeanContext property of this BeanContextChild may be vetoed by throwing the appropriate exception.
- Parameters:
-
bc
- TheBeanContext
with which to associate thisBeanContextChild
. - Throws:
-
PropertyVetoException
- if the addition of the specifiedBeanContext
is refused.
getBeanContext
BeanContext getBeanContext()
Gets the BeanContext
associated with this BeanContextChild
.
- Returns:
- the
BeanContext
associated with thisBeanContextChild
.
addPropertyChangeListener
void addPropertyChangeListener(String name, PropertyChangeListener pcl)
Adds a PropertyChangeListener
to this BeanContextChild
in order to receive a PropertyChangeEvent
whenever the specified property has changed.
- Parameters:
-
name
- the name of the property to listen on -
pcl
- thePropertyChangeListener
to add
removePropertyChangeListener
void removePropertyChangeListener(String name, PropertyChangeListener pcl)
Removes a PropertyChangeListener
from this BeanContextChild
so that it no longer receives PropertyChangeEvents
when the specified property is changed.
- Parameters:
-
name
- the name of the property that was listened on -
pcl
- thePropertyChangeListener
to remove
addVetoableChangeListener
void addVetoableChangeListener(String name, VetoableChangeListener vcl)
Adds a VetoableChangeListener
to this BeanContextChild
to receive events whenever the specified property changes.
- Parameters:
-
name
- the name of the property to listen on -
vcl
- theVetoableChangeListener
to add
removeVetoableChangeListener
void removeVetoableChangeListener(String name, VetoableChangeListener vcl)
Removes a VetoableChangeListener
from this BeanContextChild
so that it no longer receives events when the specified property changes.
- Parameters:
-
name
- the name of the property that was listened on. -
vcl
- theVetoableChangeListener
to remove.