-
- 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
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Method Summary
Methods Modifier and Type Method and Description void
addPropertyChangeListener(String name, PropertyChangeListener pcl)
Adds aPropertyChangeListener
to thisBeanContextChild
in order to receive aPropertyChangeEvent
whenever the specified property has changed.void
addVetoableChangeListener(String name, VetoableChangeListener vcl)
Adds aVetoableChangeListener
to thisBeanContextChild
to receive events whenever the specified property changes.BeanContext
getBeanContext()
Gets theBeanContext
associated with thisBeanContextChild
.void
removePropertyChangeListener(String name, PropertyChangeListener pcl)
Removes aPropertyChangeListener
from thisBeanContextChild
so that it no longer receivesPropertyChangeEvents
when the specified property is changed.void
removeVetoableChangeListener(String name, VetoableChangeListener vcl)
Removes aVetoableChangeListener
from thisBeanContextChild
so that it no longer receives events when the specified property changes.void
setBeanContext(BeanContext bc)
Objects that implement this interface, shall fire a java.beans.PropertyChangeEvent, with parameters: propertyName "beanContext", oldValue (the previous nestingBeanContext
instance, ornull
), newValue (the current nestingBeanContext
instance, ornull
).
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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, ornull
), newValue (the current nestingBeanContext
instance, ornull
).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:
- if the addition of the specifiedPropertyVetoException
BeanContext
is refused.PropertyVetoException
-
getBeanContext
BeanContext getBeanContext()
Gets theBeanContext
associated with thisBeanContextChild
.- Returns:
- the
BeanContext
associated with thisBeanContextChild
.
-
addPropertyChangeListener
void addPropertyChangeListener(String name, PropertyChangeListener pcl)
Adds aPropertyChangeListener
to thisBeanContextChild
in order to receive aPropertyChangeEvent
whenever the specified property has changed.- Parameters:
name
- the name of the property to listen onpcl
- thePropertyChangeListener
to add
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removePropertyChangeListener
void removePropertyChangeListener(String name, PropertyChangeListener pcl)
Removes aPropertyChangeListener
from thisBeanContextChild
so that it no longer receivesPropertyChangeEvents
when the specified property is changed.- Parameters:
name
- the name of the property that was listened onpcl
- thePropertyChangeListener
to remove
-
addVetoableChangeListener
void addVetoableChangeListener(String name, VetoableChangeListener vcl)
Adds aVetoableChangeListener
to thisBeanContextChild
to receive events whenever the specified property changes.- Parameters:
name
- the name of the property to listen onvcl
- theVetoableChangeListener
to add
-
removeVetoableChangeListener
void removeVetoableChangeListener(String name, VetoableChangeListener vcl)
Removes aVetoableChangeListener
from thisBeanContextChild
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.
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