Spring Framework

org.springframework.jmx.support
Class MBeanServerConnectionFactoryBean

java.lang.Object
  extended by org.springframework.jmx.support.MBeanServerConnectionFactoryBean
All Implemented Interfaces:
Aware, BeanClassLoaderAware, DisposableBean, FactoryBean<javax.management.MBeanServerConnection>, InitializingBean

public class MBeanServerConnectionFactoryBean
extends java.lang.Object
implements FactoryBean<javax.management.MBeanServerConnection>, BeanClassLoaderAware, InitializingBean, DisposableBean

FactoryBean that creates a JMX 1.2 MBeanServerConnection to a remote MBeanServer exposed via a JMXServerConnector. Exposes the MBeanServer for bean references.

Since:
1.2
Author:
Rob Harrop, Juergen Hoeller
See Also:
MBeanServerFactoryBean, ConnectorServerFactoryBean, MBeanClientInterceptor.setServer(javax.management.MBeanServerConnection), NotificationListenerRegistrar.setServer(javax.management.MBeanServerConnection)

Constructor Summary
MBeanServerConnectionFactoryBean()
           
 
Method Summary
 void afterPropertiesSet()
          Creates a JMXConnector for the given settings and exposes the associated MBeanServerConnection.
 void destroy()
          Closes the underlying JMXConnector.
 javax.management.MBeanServerConnection getObject()
          Return an instance (possibly shared or independent) of the object managed by this factory.
 java.lang.Class<? extends javax.management.MBeanServerConnection> 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(java.lang.ClassLoader classLoader)
          Callback that supplies the bean class loader to a bean instance.
 void setConnectOnStartup(boolean connectOnStartup)
          Set whether to connect to the server on startup.
 void setEnvironment(java.util.Properties environment)
          Set the environment properties used to construct the JMXConnector as java.util.Properties (String key/value pairs).
 void setEnvironmentMap(java.util.Map<java.lang.String,?> environment)
          Set the environment properties used to construct the JMXConnector as a Map of String keys and arbitrary Object values.
 void setServiceUrl(java.lang.String url)
          Set the service URL of the remote MBeanServer.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

MBeanServerConnectionFactoryBean

public MBeanServerConnectionFactoryBean()
Method Detail

setServiceUrl

public void setServiceUrl(java.lang.String url)
                   throws java.net.MalformedURLException
Set the service URL of the remote MBeanServer.

Throws:
java.net.MalformedURLException

setEnvironment

public void setEnvironment(java.util.Properties environment)
Set the environment properties used to construct the JMXConnector as java.util.Properties (String key/value pairs).


setEnvironmentMap

public void setEnvironmentMap(java.util.Map<java.lang.String,?> environment)
Set the environment properties used to construct the JMXConnector as a Map of String keys and arbitrary Object values.


setConnectOnStartup

public void setConnectOnStartup(boolean connectOnStartup)
Set whether to connect to the server on startup. Default is "true".

Can be turned off to allow for late start of the JMX server. In this case, the JMX connector will be fetched on first access.


setBeanClassLoader

public void setBeanClassLoader(java.lang.ClassLoader classLoader)
Description copied from interface: BeanClassLoaderAware
Callback that supplies the bean class 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.

Specified by:
setBeanClassLoader in interface BeanClassLoaderAware
Parameters:
classLoader - the owning class loader; may be null in which case a default ClassLoader must be used, for example the ClassLoader obtained via ClassUtils.getDefaultClassLoader()

afterPropertiesSet

public void afterPropertiesSet()
                        throws java.io.IOException
Creates a JMXConnector for the given settings and exposes the associated MBeanServerConnection.

Specified by:
afterPropertiesSet in interface InitializingBean
Throws:
java.io.IOException

getObject

public javax.management.MBeanServerConnection 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<javax.management.MBeanServerConnection>
Returns:
an instance of the bean (can be null)
See Also:
FactoryBeanNotInitializedException

getObjectType

public java.lang.Class<? extends javax.management.MBeanServerConnection> 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<javax.management.MBeanServerConnection>
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)

isSingleton

public 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.

Specified by:
isSingleton in interface FactoryBean<javax.management.MBeanServerConnection>
Returns:
whether the exposed object is a singleton
See Also:
FactoryBean.getObject(), SmartFactoryBean.isPrototype()

destroy

public void destroy()
             throws java.io.IOException
Closes the underlying JMXConnector.

Specified by:
destroy in interface DisposableBean
Throws:
java.io.IOException

Spring Framework