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java.lang.Objectorg.springframework.aop.framework.ProxyConfig
org.springframework.aop.framework.AbstractSingletonProxyFactoryBean
public abstract class AbstractSingletonProxyFactoryBean
Convenient proxy factory bean superclass for proxy factory beans that create only singletons.
Manages pre- and post-interceptors (references, rather than
 interceptor names, as in ProxyFactoryBean) and provides
 consistent interface management.
| Constructor Summary | |
|---|---|
| AbstractSingletonProxyFactoryBean() | |
| Method Summary | |
|---|---|
|  void | afterPropertiesSet()Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware). | 
| protected abstract  Object | createMainInterceptor()Create the "main" interceptor for this proxy factory bean. | 
| protected  TargetSource | createTargetSource(Object target)Determine a TargetSource for the given target (or TargetSource). | 
|  Object | getObject()Return an instance (possibly shared or independent) of the object managed by this factory. | 
|  Class | getObjectType()Return the type of object that this FactoryBean creates, or nullif not known in advance. | 
| protected  Object | getProxy(AopProxy aopProxy)Return the proxy object to expose. | 
|  boolean | isSingleton()Is the object managed by this factory a singleton? | 
|  void | setAdvisorAdapterRegistry(AdvisorAdapterRegistry advisorAdapterRegistry)Specify the AdvisorAdapterRegistry to use. | 
|  void | setBeanClassLoader(ClassLoader classLoader)Callback that supplies the bean class loaderto
 a bean instance. | 
|  void | setPostInterceptors(Object[] postInterceptors)Set additional interceptors (or advisors) to be applied after the implicit transaction interceptor. | 
|  void | setPreInterceptors(Object[] preInterceptors)Set additional interceptors (or advisors) to be applied before the implicit transaction interceptor, e.g. a PerformanceMonitorInterceptor. | 
|  void | setProxyClassLoader(ClassLoader classLoader)Set the ClassLoader to generate the proxy class in. | 
|  void | setProxyInterfaces(Class[] proxyInterfaces)Specify the set of interfaces being proxied. | 
|  void | setTarget(Object target)Set the target object, that is, the bean to be wrapped with a transactional proxy. | 
| Methods inherited from class org.springframework.aop.framework.ProxyConfig | 
|---|
| copyFrom, isExposeProxy, isFrozen, isOpaque, isOptimize, isProxyTargetClass, setExposeProxy, setFrozen, setOpaque, setOptimize, setProxyTargetClass, toString | 
| Methods inherited from class java.lang.Object | 
|---|
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait | 
| Constructor Detail | 
|---|
public AbstractSingletonProxyFactoryBean()
| Method Detail | 
|---|
public void setTarget(Object target)
The target may be any object, in which case a SingletonTargetSource will be created. If it is a TargetSource, no wrapper TargetSource is created: This enables the use of a pooling or prototype TargetSource etc.
TargetSource, 
SingletonTargetSource, 
LazyInitTargetSource, 
PrototypeTargetSource, 
CommonsPoolTargetSourcepublic void setProxyInterfaces(Class[] proxyInterfaces)
If not specified (the default), the AOP infrastructure works out which interfaces need proxying by analyzing the target, proxying all the interfaces that the target object implements.
public void setPreInterceptors(Object[] preInterceptors)
You may specify any AOP Alliance MethodInterceptors or other Spring AOP Advices, as well as Spring AOP Advisors.
PerformanceMonitorInterceptorpublic void setPostInterceptors(Object[] postInterceptors)
You may specify any AOP Alliance MethodInterceptors or other Spring AOP Advices, as well as Spring AOP Advisors.
public void setAdvisorAdapterRegistry(AdvisorAdapterRegistry advisorAdapterRegistry)
GlobalAdvisorAdapterRegistrypublic void setProxyClassLoader(ClassLoader classLoader)
Default is the bean ClassLoader, i.e. the ClassLoader used by the containing BeanFactory for loading all bean classes. This can be overridden here for specific proxies.
public void setBeanClassLoader(ClassLoader classLoader)
BeanClassLoaderAwareclass loader to
 a bean instance.
 Invoked after the population of normal bean properties but
 before an initialization callback such as
 InitializingBean's
 InitializingBean.afterPropertiesSet()
 method or a custom init-method.
setBeanClassLoader in interface BeanClassLoaderAwareclassLoader - the owning class loader; may be null in
 which case a default ClassLoader must be used, for example
 the ClassLoader obtained via
 ClassUtils.getDefaultClassLoader()public void afterPropertiesSet()
InitializingBeanThis method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.
afterPropertiesSet in interface InitializingBeanprotected TargetSource createTargetSource(Object target)
target - target. If this is an implementation of TargetSource it is
 used as our TargetSource; otherwise it is wrapped in a SingletonTargetSource.
protected Object getProxy(AopProxy aopProxy)
The default implementation uses a getProxy call with
 the factory's bean class loader. Can be overridden to specify a
 custom class loader.
aopProxy - the prepared AopProxy instance to get the proxy from
AopProxy.getProxy(ClassLoader)public Object getObject()
FactoryBeanAs with a BeanFactory, this allows support for both the
 Singleton and Prototype design pattern.
 
If this FactoryBean is not fully initialized yet at the time of
 the call (for example because it is involved in a circular reference),
 throw a corresponding FactoryBeanNotInitializedException.
 
As of Spring 2.0, FactoryBeans are allowed to return null
 objects. The factory will consider this as normal value to be used; it
 will not throw a FactoryBeanNotInitializedException in this case anymore.
 FactoryBean implementations are encouraged to throw
 FactoryBeanNotInitializedException themselves now, as appropriate.
getObject in interface FactoryBeannull)FactoryBeanNotInitializedExceptionpublic Class getObjectType()
FactoryBeannull if not known in advance.
 This allows one to check for specific types of beans without instantiating objects, for example on autowiring.
In the case of implementations that are creating a singleton object, this method should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.
This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.
NOTE: Autowiring will simply ignore FactoryBeans that return
 null here. Therefore it is highly recommended to implement
 this method properly, using the current state of the FactoryBean.
getObjectType in interface FactoryBeannull if not known at the time of the callListableBeanFactory.getBeansOfType(java.lang.Class)public final boolean isSingleton()
FactoryBeanFactoryBean.getObject() always return the same object
 (a reference that can be cached)?
 NOTE: If a FactoryBean indicates to hold a singleton object,
 the object returned from getObject() might get cached
 by the owning BeanFactory. Hence, do not return true
 unless the FactoryBean always exposes the same reference.
 
The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.
NOTE: This method returning false does not
 necessarily indicate that returned objects are independent instances.
 An implementation of the extended SmartFactoryBean interface
 may explicitly indicate independent instances through its
 SmartFactoryBean.isPrototype() method. Plain FactoryBean
 implementations which do not implement this extended interface are
 simply assumed to always return independent instances if the
 isSingleton() implementation returns false.
isSingleton in interface FactoryBeanFactoryBean.getObject(), 
SmartFactoryBean.isPrototype()protected abstract Object createMainInterceptor()
Pre-interceptors will be applied before, post-interceptors will be applied after this interceptor.
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