Java java.beans.beancontext Class BeanContextServicesSupport（JDK8）

Field Detail

• services

  protected transient HashMap services

  all accesses to the protected transient HashMap services field should be synchronized on that object

• serializable

  protected transient int serializable

  The number of instances of a serializable BeanContextServceProvider.

• proxy

  protected transient BeanContextServicesSupport.BCSSProxyServiceProvider proxy

  Delegate for the BeanContextServiceProvider.

• bcsListeners

  protected transient ArrayList bcsListeners

  List of BeanContextServicesListener objects.

Constructor Detail

• BeanContextServicesSupport

  public BeanContextServicesSupport(BeanContextServices peer,
                                    Locale lcle,
                                    boolean dTime,
                                    boolean visible)

  Construct a BeanContextServicesSupport instance

  Parameters:

  peer - The peer BeanContext we are supplying an implementation for, if null the this object is its own peer

  lcle - The current Locale for this BeanContext.

  dTime - The initial state, true if in design mode, false if runtime.

  visible - The initial visibility.

• BeanContextServicesSupport

  public BeanContextServicesSupport(BeanContextServices peer,
                                    Locale lcle,
                                    boolean dtime)

  Create an instance using the specified Locale and design mode.

  Parameters:

  peer - The peer BeanContext we are supplying an implementation for, if null the this object is its own peer

  lcle - The current Locale for this BeanContext.

  dtime - The initial state, true if in design mode, false if runtime.

• BeanContextServicesSupport

  public BeanContextServicesSupport(BeanContextServices peer,
                                    Locale lcle)

  Create an instance using the specified locale

  Parameters:

  peer - The peer BeanContext we are supplying an implementation for, if null the this object is its own peer

  lcle - The current Locale for this BeanContext.

• BeanContextServicesSupport

  public BeanContextServicesSupport(BeanContextServices peer)

  Create an instance with a peer

  Parameters:

  peer - The peer BeanContext we are supplying an implementation for, if null the this object is its own peer

• BeanContextServicesSupport

  public BeanContextServicesSupport()

  Create an instance that is not a delegate of another object

Method Detail

• initialize

  public void initialize()

  called by BeanContextSupport superclass during construction and deserialization to initialize subclass transient state. subclasses may envelope this method, but should not override it or call it directly.

  Overrides:

  initialize in class BeanContextSupport

• getBeanContextServicesPeer

  public BeanContextServices getBeanContextServicesPeer()

  Gets the BeanContextServices associated with this BeanContextServicesSupport.

  Returns:

  the instance of BeanContext this object is providing the implementation for.

• createBCSChild

  protected BeanContextSupport.BCSChild createBCSChild(Object targetChild,
                                                       Object peer)

  Subclasses can override this method to insert their own subclass of Child without having to override add() or the other Collection methods that add children to the set.

  Overrides:

  createBCSChild in class BeanContextSupport

  Parameters:

  targetChild - the child to create the Child on behalf of

  peer - the peer if the targetChild and peer are related by BeanContextProxy

• createBCSSServiceProvider

  protected BeanContextServicesSupport.BCSSServiceProvider createBCSSServiceProvider(Class sc,
                                                                                     BeanContextServiceProvider bcsp)

  subclasses can override this method to create new subclasses of BCSSServiceProvider without having to override addService() in order to instantiate.

  Parameters:

  sc - the class

  bcsp - the service provider

  Returns:

  a service provider without overriding addService()

• addBeanContextServicesListener

  public void addBeanContextServicesListener(BeanContextServicesListener bcsl)

  add a BeanContextServicesListener

  Specified by:

  addBeanContextServicesListener in interface BeanContextServices

  Parameters:

  bcsl - the BeanContextServicesListener to add

  Throws:

  NullPointerException - if the argument is null

• removeBeanContextServicesListener

  public void removeBeanContextServicesListener(BeanContextServicesListener bcsl)

  remove a BeanContextServicesListener

  Specified by:

  removeBeanContextServicesListener in interface BeanContextServices

  Parameters:

  bcsl - the BeanContextServicesListener to remove from this context

• addService

  public boolean addService(Class serviceClass,
                            BeanContextServiceProvider bcsp)

  add a service

  Specified by:

  addService in interface BeanContextServices

  Parameters:

  serviceClass - the service class

  bcsp - the service provider

  Returns:

  true if the service was successful added, false otherwise

• addService

  protected boolean addService(Class serviceClass,
                               BeanContextServiceProvider bcsp,
                               boolean fireEvent)

  add a service

  Parameters:

  serviceClass - the service class

  bcsp - the service provider

  fireEvent - whether or not an event should be fired

  Returns:

  true if the service was successfully added

• revokeService

  public void revokeService(Class serviceClass,
                            BeanContextServiceProvider bcsp,
                            boolean revokeCurrentServicesNow)

  remove a service

  Specified by:

  revokeService in interface BeanContextServices

  Parameters:

  serviceClass - the service class

  bcsp - the service provider

  revokeCurrentServicesNow - whether or not to revoke the service

• hasService

  public boolean hasService(Class serviceClass)

  has a service, which may be delegated

  Specified by:

  hasService in interface BeanContextServices

  Parameters:

  serviceClass - the service in question

  Returns:

  true if the service is available

• getService

  public Object getService(BeanContextChild child,
                           Object requestor,
                           Class serviceClass,
                           Object serviceSelector,
                           BeanContextServiceRevokedListener bcsrl)
                    throws TooManyListenersException

  obtain a service which may be delegated

  Specified by:

  getService in interface BeanContextServices

  Parameters:

  child - the BeanContextChild associated with this request

  requestor - the object requesting the service

  serviceClass - class of the requested service

  serviceSelector - the service dependent parameter

  bcsrl - the BeanContextServiceRevokedListener to notify if the service should later become revoked

  Returns:

  a reference to this context's named Service as requested or null

  Throws:

  TooManyListenersException - if there are too many listeners

• releaseService

  public void releaseService(BeanContextChild child,
                             Object requestor,
                             Object service)

  release a service

  Specified by:

  releaseService in interface BeanContextServices

  Parameters:

  child - the BeanContextChild

  requestor - the requestor

  service - the service

• getCurrentServiceClasses

  public Iterator getCurrentServiceClasses()

  Description copied from interface: BeanContextServices
  Gets the currently available services for this context.

  Specified by:

  getCurrentServiceClasses in interface BeanContextServices

  Returns:

  an iterator for all the currently registered service classes.

• getCurrentServiceSelectors

  public Iterator getCurrentServiceSelectors(Class serviceClass)

  Description copied from interface: BeanContextServices
  Gets the list of service dependent service parameters (Service Selectors) for the specified service, by calling getCurrentServiceSelectors() on the underlying BeanContextServiceProvider.

  Specified by:

  getCurrentServiceSelectors in interface BeanContextServices

  Parameters:

  serviceClass - the specified service

  Returns:

  an iterator for all the currently available service selectors (if any) available for the specified service.

• serviceAvailable

  public void serviceAvailable(BeanContextServiceAvailableEvent bcssae)

  BeanContextServicesListener callback, propagates event to all currently registered listeners and BeanContextServices children, if this BeanContextService does not already implement this service itself. subclasses may override or envelope this method to implement their own propagation semantics.

  Specified by:

  serviceAvailable in interface BeanContextServicesListener

  Overrides:

  serviceAvailable in class BeanContextChildSupport

  Parameters:

  bcssae - The BeanContextServiceAvailableEvent fired as a result of a service becoming available

• serviceRevoked

  public void serviceRevoked(BeanContextServiceRevokedEvent bcssre)

  BeanContextServicesListener callback, propagates event to all currently registered listeners and BeanContextServices children, if this BeanContextService does not already implement this service itself. subclasses may override or envelope this method to implement their own propagation semantics.

  Specified by:

  serviceRevoked in interface BeanContextServiceRevokedListener

  Overrides:

  serviceRevoked in class BeanContextChildSupport

  Parameters:

  bcssre - The BeanContextServiceRevokedEvent fired as a result of a service being revoked

• getChildBeanContextServicesListener

  protected static final BeanContextServicesListener getChildBeanContextServicesListener(Object child)

  Gets the BeanContextServicesListener (if any) of the specified child.

  Parameters:

  child - the specified child

  Returns:

  the BeanContextServicesListener (if any) of the specified child

• childJustRemovedHook

  protected void childJustRemovedHook(Object child,
                                      BeanContextSupport.BCSChild bcsc)

  called from superclass child removal operations after a child has been successfully removed. called with child synchronized. This subclass uses this hook to immediately revoke any services being used by this child if it is a BeanContextChild. subclasses may envelope this method in order to implement their own child removal side-effects.

  Overrides:

  childJustRemovedHook in class BeanContextSupport

  Parameters:

  child - the child

  bcsc - the BCSChild

• releaseBeanContextResources

  protected void releaseBeanContextResources()

  called from setBeanContext to notify a BeanContextChild to release resources obtained from the nesting BeanContext. This method revokes any services obtained from its parent. subclasses may envelope this method to implement their own semantics.

  Overrides:

  releaseBeanContextResources in class BeanContextChildSupport

• initializeBeanContextResources

  protected void initializeBeanContextResources()

  called from setBeanContext to notify a BeanContextChild to allocate resources obtained from the nesting BeanContext. subclasses may envelope this method to implement their own semantics.

  Overrides:

  initializeBeanContextResources in class BeanContextChildSupport

• fireServiceAdded

  protected final void fireServiceAdded(Class serviceClass)

  Fires a BeanContextServiceEvent notifying of a new service.

  Parameters:

  serviceClass - the service class

• fireServiceAdded

  protected final void fireServiceAdded(BeanContextServiceAvailableEvent bcssae)

  Fires a BeanContextServiceAvailableEvent indicating that a new service has become available.

  Parameters:

  bcssae - the BeanContextServiceAvailableEvent

• fireServiceRevoked

  protected final void fireServiceRevoked(BeanContextServiceRevokedEvent bcsre)

  Fires a BeanContextServiceEvent notifying of a service being revoked.

  Parameters:

  bcsre - the BeanContextServiceRevokedEvent

• fireServiceRevoked

  protected final void fireServiceRevoked(Class serviceClass,
                                          boolean revokeNow)

  Fires a BeanContextServiceRevokedEvent indicating that a particular service is no longer available.

  Parameters:

  serviceClass - the service class

  revokeNow - whether or not the event should be revoked now

• bcsPreSerializationHook

  protected void bcsPreSerializationHook(ObjectOutputStream oos)
                                  throws IOException

  called from BeanContextSupport writeObject before it serializes the children ... This class will serialize any Serializable BeanContextServiceProviders herein. subclasses may envelope this method to insert their own serialization processing that has to occur prior to serialization of the children

  Overrides:

  bcsPreSerializationHook in class BeanContextSupport

  Parameters:

  oos - the ObjectOutputStream to use during serialization

  Throws:

  IOException - if serialization failed

• bcsPreDeserializationHook

  protected void bcsPreDeserializationHook(ObjectInputStream ois)
                                    throws IOException,
                                           ClassNotFoundException

  called from BeanContextSupport readObject before it deserializes the children ... This class will deserialize any Serializable BeanContextServiceProviders serialized earlier thus making them available to the children when they deserialized. subclasses may envelope this method to insert their own serialization processing that has to occur prior to serialization of the children

  Overrides:

  bcsPreDeserializationHook in class BeanContextSupport

  Parameters:

  ois - the ObjectInputStream to use during deserialization

  Throws:

  IOException - if deserialization failed

  ClassNotFoundException - if needed classes are not found