org.objectweb.cjdbc.controller.jmx
Class MBeanServerManager

java.lang.Object
  org.objectweb.cjdbc.controller.jmx.MBeanServerManager

public class MBeanServerManager

extends java.lang.Object

The MBeanServerManager (Singleton) creates a single MBeanServer in an JVM. The server can be accessed with the getInstance() method.

The server is created with org.objectweb.cjdbc.controller.jmx.MBeanServerBuilder

Version:

1.0

Author:

Marc Wick

Field Summary

private static boolean	isJmxEnabled
(package private) static Trace	logger
private static javax.management.MBeanServer	mbs

Constructor Summary

MBeanServerManager()

Method Summary

static javax.management.MBeanServer	getInstance() creating a MBeanServer, if it does not exist, otherwise a reference to the MBeanServer is returned
static boolean	isJmxEnabled() Returns the isJmxEnabled value.
static javax.management.ObjectInstance	registerMBean(java.lang.Object object, javax.management.ObjectName name) Registers an MBean with the MBean server if jmx is enabled, otherwise it returns null.
static void	setJmxEnabled(boolean isJmxEnabled) enable or disable jmx
static void	unregister(javax.management.ObjectName name) unregister an mbean.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

static Trace logger

mbs

private static javax.management.MBeanServer mbs

isJmxEnabled

private static boolean isJmxEnabled

Constructor Detail

MBeanServerManager

public MBeanServerManager()

Method Detail

getInstance

public static javax.management.MBeanServer getInstance()

creating a MBeanServer, if it does not exist, otherwise a reference to the MBeanServer is returned

Returns:

the mbeanserver instance, null if jmx is disabled

isJmxEnabled

public static boolean isJmxEnabled()

Returns the isJmxEnabled value.

Returns:

Returns the isJmxEnabled.

setJmxEnabled

public static void setJmxEnabled(boolean isJmxEnabled)
                          throws JmxException

enable or disable jmx

Parameters:

isJmxEnabled - The isJmxEnabled to set.

Throws:

JmxException - an exception

registerMBean

public static javax.management.ObjectInstance registerMBean(java.lang.Object object,
                                                            javax.management.ObjectName name)
                                                     throws JmxException

Registers an MBean with the MBean server if jmx is enabled, otherwise it returns null.

This method is equivalend to

 MBeanServer server = MBeanServerManager.getInstance();
 if (server != null)
 {
   server.registerMBean(object, name);
 }
 

Parameters:

object - The MBean to be registered as an MBean.

name - The object name of the MBean. May be null.

Returns:

An ObjectInstance, containing the ObjectName and the Java class name of the newly registered MBean. If the contained ObjectName is n, the contained Java class name is getMBeanInfo(n).getClassName(). Or null if jmx is disabled

Throws:

JmxException - the object could not be registered

unregister

public static void unregister(javax.management.ObjectName name)
                       throws JmxException

unregister an mbean.

Parameters:

name - the name of the bean to unregister

Throws:

JmxException - problems