java.beans.beancontext
Class BeanContextServicesSupport
- BeanContext, BeanContextChild, BeanContextServiceRevokedListener, BeanContextServices, BeanContextServicesListener, Collection<E>, DesignMode, EventListener, Iterable<E>, PropertyChangeListener, Serializable, VetoableChangeListener, Visibility
This is a helper class for implementing a bean context which
supplies services. It is intended to be used either by
subclassing or by calling methods of this implementation
from another.
void | addBeanContextServicesListener(BeanContextServicesListener listener)- Adds a new listener for service availability and
revocation events.
|
boolean | addService(Class<T> serviceClass, BeanContextServiceProvider bcsp)- Registers a new service from the specified service provider.
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protected boolean | addService(Class<T> serviceClass, BeanContextServiceProvider bcsp, boolean fireEvent)- Registers a new service from the specified service provider.
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protected void | bcsPreDeserializationHook(ObjectInputStream ois)- Deserializes any service providers which are serializable.
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protected void | bcsPreSerializationHook(ObjectOutputStream oos)- Serializes any service providers which are serializable.
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protected void | childJustRemovedHook(Object child, BeanContextSupport.BCSChild bcsc)- Revokes any services used by a child that has just been removed.
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protected BeanContextSupport.BCSChild | createBCSChild(Object targetChild, Object peer)- Overrides the
BeanContextSupport.createBCSChild(Object,Object) method
so as to use a BeanContextServicesSupport.BCSSChild instead.
|
protected BeanContextServicesSupport.BCSSServiceProvider | createBCSSServiceProvider(Class<T> sc, BeanContextServiceProvider bcsp)- Provides a hook so that subclasses can replace the
BeanContextServicesSupport.BCSSServiceProvider class, used to store registered
service providers, with a subclass without replacing the
addService(Class,BeanContextServiceProvider) method.
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protected void | fireServiceAdded(BeanContextServiceAvailableEvent bcssae)- Sends a
BeanContextServiceAvailableEvent to all
registered listeners.
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protected void | fireServiceAdded(Class<T> serviceClass)- Sends a
BeanContextServiceAvailableEvent to all
registered listeners.
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protected void | fireServiceRevoked(BeanContextServiceRevokedEvent event)- Sends a
BeanContextServiceRevokedEvent to all
registered listeners.
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protected void | fireServiceRevoked(Class<T> serviceClass, boolean revokeNow)- Sends a
BeanContextServiceRevokedEvent to all
registered listeners.
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BeanContextServices | getBeanContextServicesPeer()- Returns the services peer given at construction time,
or
null if no peer was given.
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protected static BeanContextServicesListener | getChildBeanContextServicesListener(Object child)- Returns
child as an instance of
BeanContextServicesListener, or null if
child does not implement that interface.
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Iterator<E> | getCurrentServiceClasses()- Returns an iterator over the currently available
services.
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Iterator<E> | getCurrentServiceSelectors(Class<T> serviceClass)- Returns an iterator over the service selectors of the service
provider for the given service.
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Object | getService(BeanContextChild child, Object requestor, Class<T> serviceClass, Object serviceSelector, BeanContextServiceRevokedListener bcsrl)- Retrieves the specified service.
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boolean | hasService(Class<T> serviceClass)- Returns true if the specified service is available.
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void | initialize()
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protected void | initializeBeanContextResources()- Subclasses may override this method to allocate resources
from the nesting bean context.
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protected void | releaseBeanContextResources()- Relinquishes any resources obtained from the parent context.
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void | releaseService(BeanContextChild child, Object requestor, Object service)- Releases the reference to a service held by a
BeanContextChild (or an arbitrary object associated
with it).
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void | removeBeanContextServicesListener(BeanContextServicesListener listener)
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void | revokeService(Class<T> serviceClass, BeanContextServiceProvider bcsp, boolean revokeCurrentServicesNow)- Revokes the given service.
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void | serviceAvailable(BeanContextServiceAvailableEvent bcssae)- Called by
BeanContextServices whenever a service is made available.
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void | serviceRevoked(BeanContextServiceRevokedEvent bcssre)- Called by
BeanContextServices.revokeService() to indicate that a service has been revoked.
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add, addAll, addBeanContextMembershipListener, avoidingGui, bcsChildren, bcsPreDeserializationHook, bcsPreSerializationHook, childDeserializedHook, childJustAddedHook, childJustRemovedHook, classEquals, clear, contains, containsAll, containsKey, copyChildren, createBCSChild, deserialize, dontUseGui, fireChildrenAdded, fireChildrenRemoved, getBeanContextPeer, getChildBeanContextChild, getChildBeanContextMembershipListener, getChildPropertyChangeListener, getChildSerializable, getChildVetoableChangeListener, getChildVisibility, getLocale, getResource, getResourceAsStream, initialize, instantiateChild, isDesignTime, isEmpty, isSerializing, iterator, needsGui, okToUseGui, propertyChange, readChildren, remove, remove, removeAll, removeBeanContextMembershipListener, retainAll, serialize, setDesignTime, setLocale, size, toArray, toArray, validatePendingAdd, validatePendingRemove, vetoableChange, writeChildren |
addPropertyChangeListener, addVetoableChangeListener, firePropertyChange, fireVetoableChange, getBeanContext, getBeanContextChildPeer, initializeBeanContextResources, isDelegated, releaseBeanContextResources, removePropertyChangeListener, removeVetoableChangeListener, serviceAvailable, serviceRevoked, setBeanContext, validatePendingSetBeanContext |
clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait |
bcsListeners
protected ArrayList<E> bcsListeners
A collection of listeners who receive availability
and revocation notifications.
serializable
protected int serializable
The number of serializable service providers.
BeanContextServicesSupport
public BeanContextServicesSupport(BeanContextServices peer,
Locale locale,
boolean dtime)peer - the bean context peer (null permitted).locale - the locale (null permitted, equivalent to
the default locale).dtime - a flag indicating whether or not the bean context is in
design time mode.
BeanContextServicesSupport
public BeanContextServicesSupport(BeanContextServices peer,
Locale locale,
boolean dtime,
boolean visible)peer - the bean context peer (null permitted).locale - the locale (null permitted, equivalent to
the default locale).dtime - a flag indicating whether or not the bean context is in
design time mode.visible - initial value of the okToUseGui flag.
addService
public boolean addService(Class<T> serviceClass,
BeanContextServiceProvider bcsp) Registers a new service from the specified service provider.
The service is internally associated with the service provider
and a BeanContextServiceAvailableEvent is fired. If
the service is already registered, then this method instead
returns false. This is equivalent to calling
addService(serviceClass, bcsp, true).
- addService in interface BeanContextServices
serviceClass - the class of the service to be registered.bcsp - the provider of the given service.
- true if the service was registered successfully.
addService
protected boolean addService(Class<T> serviceClass,
BeanContextServiceProvider bcsp,
boolean fireEvent) Registers a new service from the specified service provider.
The service is internally associated with the service provider
and (if fireEvent is true) a
BeanContextServiceAvailableEvent is fired. If
the service is already registered, then this method instead
returns false.
serviceClass - the class of the service to be registered.bcsp - the provider of the given service.fireEvent - true if a service availability event should
be fired.
- true if the service was registered successfully.
fireServiceAdded
protected final void fireServiceAdded(Class<T> serviceClass)
Sends a BeanContextServiceAvailableEvent to all
registered listeners.
serviceClass - the service that is now available.
fireServiceRevoked
protected final void fireServiceRevoked(Class<T> serviceClass,
boolean revokeNow) Sends a BeanContextServiceRevokedEvent to all
registered listeners.
serviceClass - the service that has been revoked.
getService
public Object getService(BeanContextChild child,
Object requestor,
Class<T> serviceClass,
Object serviceSelector,
BeanContextServiceRevokedListener bcsrl)
throws TooManyListenersException Retrieves the specified service. If a provider for the service
is registered in this context, then the request is passed on to
the provider and the service returned. Otherwise, the request
is delegated to a parent
BeanContextServices, if possible.
If the service can not be found at all, then
null
is returned.
- getService in interface BeanContextServices
child - the child obtaining the reference.requestor - the requestor of the service, which may be the
child itself.serviceClass - the service being requested.serviceSelector - an additional service-dependent parameter
(may be null if not appropriate).bcsrl - a listener used to notify the requestor that the service
has since been revoked.
- a reference to the service requested, or
null.
BeanContextServicesSupport.java --
Copyright (C) 2003, 2005 Free Software Foundation, Inc.
This file is part of GNU Classpath.
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