MBeanUtils.java 文件源码

/**
 * Create, register, and return an MBean for this
 * <code>Engine</code> object.
 *
 * @param engine The Engine to be managed
 *
 * @exception Exception if an MBean cannot be created or registered
 */
static DynamicMBean createMBean(Engine engine)
    throws Exception {

    String mname = createManagedName(engine);
    ManagedBean managed = registry.findManagedBean(mname);
    if (managed == null) {
        Exception e = new Exception("ManagedBean is not found with "+mname);
        throw new MBeanException(e);
    }
    String domain = managed.getDomain();
    if (domain == null)
        domain = mserver.getDefaultDomain();
    DynamicMBean mbean = managed.createMBean(engine);
    ObjectName oname = createObjectName(domain, engine);
    if( mserver.isRegistered( oname ))  {
        mserver.unregisterMBean(oname);
    }
    mserver.registerMBean(mbean, oname);
    return (mbean);

}