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Java Source Code / Java Documentation » J2EE » spring framework 2.5 » org.springframework.jmx.support

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.springframework.jmx.support .MBeanRegistrationSupport

All known Subclasses:   org.springframework.jmx.export .MBeanExporter,  org.springframework.jmx.support .ConnectorServerFactoryBean,
MBeanRegistrationSupport
public class MBeanRegistrationSupport (Code)
Provides supporting infrastructure for registering MBeans with an javax.management.MBeanServer . The behavior when encountering an existing MBean at a given ObjectName is fully configurable allowing for flexible registration settings.
All registered MBeans are tracked and can be unregistered by calling the # MBeanRegistrationSupport.unregisterBeans() method.
Sub-classes can receive notifications when an MBean is registered or unregistered by overriding the MBeanRegistrationSupport.onRegister(ObjectName) and MBeanRegistrationSupport.onUnregister(ObjectName) methods respectively.
By default, the registration process will fail if attempting to register an MBean using a javax.management.ObjectName that is already used.
By setting the MBeanRegistrationSupport.setRegistrationBehaviorName(String) registrationBehaviorName property to REGISTRATION_IGNORE_EXISTING the registration process will simply ignore existing MBeans leaving them registered. This is useful in settings where multiple applications want to share a common MBean in a shared MBeanServer .
Setting MBeanRegistrationSupport.setRegistrationBehaviorName(String) registrationBehaviorName property to REGISTRATION_REPLACE_EXISTING will cause existing MBeans to be replaced during registration if necessary. This is useful in situations where you can't guarantee the state of your MBeanServer .
author:
   Rob Harrop
author:
   Juergen Hoeller
since:
   2.0
See Also:   MBeanRegistrationSupport.setServer
See Also:   MBeanRegistrationSupport.setRegistrationBehaviorName
See Also:   org.springframework.jmx.export.MBeanExporter

Field Summary
final public static int REGISTRATION_FAIL_ON_EXISTING
     Constant indicating that registration should fail when attempting to register an MBean under a name that already exists.
final public static int REGISTRATION_IGNORE_EXISTING
     Constant indicating that registration should ignore the affected MBean when attempting to register an MBean under a name that already exists.
final public static int REGISTRATION_REPLACE_EXISTING
     Constant indicating that registration should replace the affected MBean when attempting to register an MBean under a name that already exists.
final protected Log logger
     Log instance for this class.
protected Set registeredBeans
     The beans that have been registered by this exporter.
protected MBeanServer server
     The MBeanServer instance being used to register beans.

Method Summary
protected void doRegister(Object mbean, ObjectName objectName)
     Actually register the MBean with the server.
protected void onRegister(ObjectName objectName)
     Called when an MBean is registered under the given ObjectName .
protected void onUnregister(ObjectName objectName)
     Called when an MBean is unregistered under the given ObjectName .
public void setRegistrationBehavior(int registrationBehavior)
     Specify what action should be taken when attempting to register an MBean under an javax.management.ObjectName that already exists.
public void setRegistrationBehaviorName(String registrationBehavior)
     Set the registration behavior by the name of the corresponding constant, e.g.
public void setServer(MBeanServer server)
     Specify the MBeanServer instance with which all beans should be registered.
protected void unregisterBeans()
     Unregisters all beans that have been registered by an instance of this class.

Field Detail
REGISTRATION_FAIL_ON_EXISTING
final public static int REGISTRATION_FAIL_ON_EXISTING(Code)
Constant indicating that registration should fail when attempting to register an MBean under a name that already exists.
This is the default registration behavior.

REGISTRATION_IGNORE_EXISTING
final public static int REGISTRATION_IGNORE_EXISTING(Code)
Constant indicating that registration should ignore the affected MBean when attempting to register an MBean under a name that already exists.

REGISTRATION_REPLACE_EXISTING
final public static int REGISTRATION_REPLACE_EXISTING(Code)
Constant indicating that registration should replace the affected MBean when attempting to register an MBean under a name that already exists.

logger
final protected Log logger(Code)
Log instance for this class.

registeredBeans
protected Set registeredBeans(Code)
The beans that have been registered by this exporter.

server
protected MBeanServer server(Code)
The MBeanServer instance being used to register beans.

Method Detail
doRegister
protected void doRegister(Object mbean, ObjectName objectName) throws JMException(Code)
Actually register the MBean with the server. The behavior when encountering an existing MBean can be configured using the MBeanRegistrationSupport.setRegistrationBehavior(int) and MBeanRegistrationSupport.setRegistrationBehaviorName(String) methods.
throws:
  JMException - if the registration failed

onRegister
protected void onRegister(ObjectName objectName)(Code)
Called when an MBean is registered under the given ObjectName . Allows subclasses to perform additional processing when an MBean is registered.
Parameters:
  objectName - the ObjectName of the MBean that was registered.

onUnregister
protected void onUnregister(ObjectName objectName)(Code)
Called when an MBean is unregistered under the given ObjectName . Allows subclasses to perform additional processing when an MBean is unregistered.
Parameters:
  objectName - the ObjectName of the MBean that was unregistered.

setRegistrationBehavior
public void setRegistrationBehavior(int registrationBehavior)(Code)
Specify what action should be taken when attempting to register an MBean under an javax.management.ObjectName that already exists.
Default is REGISTRATION_FAIL_ON_EXISTING.
See Also:   MBeanRegistrationSupport.setRegistrationBehaviorName(String)
See Also:   MBeanRegistrationSupport.REGISTRATION_FAIL_ON_EXISTING
See Also:   MBeanRegistrationSupport.REGISTRATION_IGNORE_EXISTING
See Also:   MBeanRegistrationSupport.REGISTRATION_REPLACE_EXISTING

setRegistrationBehaviorName
public void setRegistrationBehaviorName(String registrationBehavior)(Code)
Set the registration behavior by the name of the corresponding constant, e.g. "REGISTRATION_IGNORE_EXISTING".
See Also:   MBeanRegistrationSupport.setRegistrationBehavior
See Also:   MBeanRegistrationSupport.REGISTRATION_FAIL_ON_EXISTING
See Also:   MBeanRegistrationSupport.REGISTRATION_IGNORE_EXISTING
See Also:   MBeanRegistrationSupport.REGISTRATION_REPLACE_EXISTING

setServer
public void setServer(MBeanServer server)(Code)
Specify the MBeanServer instance with which all beans should be registered. The MBeanExporter will attempt to locate an existing MBeanServer if none is supplied.

unregisterBeans
protected void unregisterBeans()(Code)
Unregisters all beans that have been registered by an instance of this class.

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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