public class MBeanProxyFactoryBean extends MBeanClientInterceptor implements FactoryBean<Object>, BeanClassLoaderAware, InitializingBean
There is no need for the managed resource to implement the proxy interface, although you may find it convenient to do. It is not required that every operation and attribute in the management interface is matched by a corresponding property or method in the proxy interface.
Attempting to invoke or access any method or property on the proxy
interface that does not correspond to the management interface will lead
to an InvalidInvocationException.
MBeanClientInterceptor,
InvalidInvocationExceptionloggerOBJECT_TYPE_ATTRIBUTE| Constructor and Description |
|---|
MBeanProxyFactoryBean() |
| Modifier and Type | Method and Description |
|---|---|
void |
afterPropertiesSet()
Checks that the
proxyInterface has been specified and then
generates the proxy for the target MBean. |
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
null if not known in advance. |
boolean |
isSingleton()
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)? |
void |
setBeanClassLoader(ClassLoader classLoader)
Callback that supplies the bean
class loader to
a bean instance. |
void |
setProxyInterface(Class<?> proxyInterface)
Set the interface that the generated proxy will implement.
|
convertResultValueIfNecessary, destroy, doInvoke, getEnvironment, getManagementInterface, handleConnectFailure, invoke, isPrepared, prepare, setAgentId, setConnectOnStartup, setEnvironment, setManagementInterface, setObjectName, setRefreshOnConnectFailure, setServer, setServiceUrl, setUseStrictCasingpublic void setProxyInterface(Class<?> proxyInterface)
This will usually be a management interface that matches the target MBean, exposing bean property setters and getters for MBean attributes and conventional Java methods for MBean operations.
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 BeanClassLoaderAwaresetBeanClassLoader in class MBeanClientInterceptorclassLoader - the owning class loaderpublic void afterPropertiesSet()
throws MBeanServerNotFoundException,
MBeanInfoRetrievalException
proxyInterface has been specified and then
generates the proxy for the target MBean.afterPropertiesSet in interface InitializingBeanafterPropertiesSet in class MBeanClientInterceptorMBeanServerNotFoundExceptionMBeanInfoRetrievalException@Nullable 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 FactoryBean<Object>null)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 FactoryBean<Object>null if not known at the time of the callListableBeanFactory.getBeansOfType(java.lang.Class<T>)public 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.
The default implementation returns true, since a
FactoryBean typically manages a singleton instance.
isSingleton in interface FactoryBean<Object>FactoryBean.getObject(),
SmartFactoryBean.isPrototype()