java.beans.beancontext

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 and Description
      void addPropertyChangeListener(String name, PropertyChangeListener pcl)
      Adds a PropertyChangeListener to this BeanContextChild in order to receive a PropertyChangeEvent whenever the specified property has changed.
      void addVetoableChangeListener(String name, VetoableChangeListener vcl)
      Adds a VetoableChangeListener to this BeanContextChild to receive events whenever the specified property changes.
      BeanContext getBeanContext()
      Gets the BeanContext associated with this BeanContextChild.
      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.
      void removeVetoableChangeListener(String name, VetoableChangeListener vcl)
      Removes a VetoableChangeListener from this BeanContextChild 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 nesting BeanContext instance, or null), newValue (the current nesting BeanContext instance, or null).

    • 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 - The BeanContext with which to associate this BeanContextChild.
        Throws:
        PropertyVetoException - if the addition of the specified BeanContext is refused.

      • getBeanContext

        BeanContext getBeanContext()
        Gets the BeanContext associated with this BeanContextChild.
        Returns:
        the BeanContext associated with this BeanContextChild.

      • 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 - the PropertyChangeListener 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 - the PropertyChangeListener 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 - the VetoableChangeListener 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 - the VetoableChangeListener to remove.