import org.apache.catalina.realm.UserDatabaseRealm; //导入依赖的package包/类
/**
 * Create a new  UserDatabaseRealm.
 *
 * @param parent MBean Name of the associated parent component
 * @param resourceName Global JNDI resource name of the associated
 *  UserDatabase
 *
 * @exception Exception if an MBean cannot be created or registered
 */
public String createUserDatabaseRealm(String parent, String resourceName)
    throws Exception {

     // Create a new UserDatabaseRealm instance
    UserDatabaseRealm realm = new UserDatabaseRealm();
    realm.setResourceName(resourceName);
    
    // Add the new instance to its parent component
    ObjectName pname = new ObjectName(parent);
    ContainerBase containerBase = getParentContainerFromParent(pname);
    // Add the new instance to its parent component
    containerBase.setRealm(realm);
    // Return the corresponding MBean name
    ObjectName oname = realm.getObjectName();
    // FIXME getObjectName() returns null
    //ObjectName oname = 
    //    MBeanUtils.createObjectName(pname.getDomain(), realm);
    if (oname != null) {
        return (oname.toString());
    } else {
        return null;
    }   

}
 

import org.apache.catalina.realm.UserDatabaseRealm; //导入依赖的package包/类
/**
 * Create a new UserDatabaseRealm.
 *
 * @param parent
 *            MBean Name of the associated parent component
 * @param resourceName
 *            Global JNDI resource name of the associated UserDatabase
 *
 * @exception Exception
 *                if an MBean cannot be created or registered
 */
public String createUserDatabaseRealm(String parent, String resourceName) throws Exception {

	// Create a new UserDatabaseRealm instance
	UserDatabaseRealm realm = new UserDatabaseRealm();
	realm.setResourceName(resourceName);

	// Add the new instance to its parent component
	ObjectName pname = new ObjectName(parent);
	ContainerBase containerBase = getParentContainerFromParent(pname);
	// Add the new instance to its parent component
	containerBase.setRealm(realm);
	// Return the corresponding MBean name
	ObjectName oname = realm.getObjectName();
	// FIXME getObjectName() returns null
	// ObjectName oname =
	// MBeanUtils.createObjectName(pname.getDomain(), realm);
	if (oname != null) {
		return (oname.toString());
	} else {
		return null;
	}

}