org.springframework.aop.framework

Class AbstractSingletonProxyFactoryBean

    • Constructor Detail

      • AbstractSingletonProxyFactoryBean

        public AbstractSingletonProxyFactoryBean()
    • Method Detail

      • setProxyInterfaces

        public void setProxyInterfaces(java.lang.Class<?>[] proxyInterfaces)
        Specify the set of interfaces being proxied.

        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.

      • setPreInterceptors

        public void setPreInterceptors(java.lang.Object[] preInterceptors)
        Set additional interceptors (or advisors) to be applied before the implicit transaction interceptor, e.g. a PerformanceMonitorInterceptor.

        You may specify any AOP Alliance MethodInterceptors or other Spring AOP Advices, as well as Spring AOP Advisors.

        See Also:
        PerformanceMonitorInterceptor
      • setPostInterceptors

        public void setPostInterceptors(java.lang.Object[] postInterceptors)
        Set additional interceptors (or advisors) to be applied after the implicit transaction interceptor.

        You may specify any AOP Alliance MethodInterceptors or other Spring AOP Advices, as well as Spring AOP Advisors.

      • setProxyClassLoader

        public void setProxyClassLoader(java.lang.ClassLoader classLoader)
        Set the ClassLoader to generate the proxy class in.

        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.

      • afterPropertiesSet

        public void afterPropertiesSet()
        Description copied from interface: InitializingBean
        Invoked by the containing BeanFactory after it has set all bean properties and satisfied BeanFactoryAware, ApplicationContextAware etc.

        This method allows the bean instance to perform validation of its overall configuration and final initialization when all bean properties have been set.

        Specified by:
        afterPropertiesSet in interface InitializingBean
      • createTargetSource

        protected TargetSource createTargetSource(java.lang.Object target)
        Determine a TargetSource for the given target (or TargetSource).
        Parameters:
        target - target. If this is an implementation of TargetSource it is used as our TargetSource; otherwise it is wrapped in a SingletonTargetSource.
        Returns:
        a TargetSource for this object
      • postProcessProxyFactory

        protected void postProcessProxyFactory(ProxyFactory proxyFactory)
        A hook for subclasses to post-process the ProxyFactory before creating the proxy instance with it.
        Parameters:
        proxyFactory - the AOP ProxyFactory about to be used
        Since:
        4.2
      • getObject

        public java.lang.Object getObject()
        Description copied from interface: FactoryBean
        Return an instance (possibly shared or independent) of the object managed by this factory.

        As 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.

        Specified by:
        getObject in interface FactoryBean<java.lang.Object>
        Returns:
        an instance of the bean (can be null)
        See Also:
        FactoryBeanNotInitializedException
      • getObjectType

        @Nullable
        public java.lang.Class<?> getObjectType()
        Description copied from interface: FactoryBean
        Return the type of object that this FactoryBean creates, or null 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.

        Specified by:
        getObjectType in interface FactoryBean<java.lang.Object>
        Returns:
        the type of object that this FactoryBean creates, or null if not known at the time of the call
        See Also:
        ListableBeanFactory.getBeansOfType(java.lang.Class<T>)
      • isSingleton

        public final boolean isSingleton()
        Description copied from interface: FactoryBean
        Is the object managed by this factory a singleton? That is, will FactoryBean.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.

        The default implementation returns true, since a FactoryBean typically manages a singleton instance.

        Specified by:
        isSingleton in interface FactoryBean<java.lang.Object>
        Returns:
        whether the exposed object is a singleton
        See Also:
        FactoryBean.getObject(), SmartFactoryBean.isPrototype()
      • createMainInterceptor

        protected abstract java.lang.Object createMainInterceptor()
        Create the "main" interceptor for this proxy factory bean. Typically an Advisor, but can also be any type of Advice.

        Pre-interceptors will be applied before, post-interceptors will be applied after this interceptor.