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package com.sun.appserv.management.config;

import com.sun.appserv.management.base.XTypes;



import javax.management.NotificationEmitter;

import com.sun.appserv.management.base.AMX;

/**
	All Config MBeans must extend this interface, whether they
	represent elements or whether they are managers. Extending
	this interface implies that the class is part of the  API
	for configuration.
	<p>
	All AMXConfig s are required to implement NotificationEmitter.
	A Config  must issue {@link javax.management.AttributeChangeNotification} when
	changes are made to the configuration.
 */
public interface AMXConfig extends AMX
{
	/**
		The type of the Notification emitted when a config element
		is created.
	 */
	public final String	CONFIG_CREATED_NOTIFICATION_TYPE	=
		"com.sun.appserv.management.config.ConfigCreated";
    
	/**
		The type of the Notification emitted when a config element
		is removed.
	 */
	public final String	CONFIG_REMOVED_NOTIFICATION_TYPE	=
		"com.sun.appserv.management.config.ConfigRemoved";
		
	/**
		The key within the Notification's Map of type
		CONFIG_REMOVED_NOTIFICATION_TYPE which yields the ObjectName
		of the  created or removed config.
	 */
	public final String	CONFIG_OBJECT_NAME_KEY	=
					"ConfigObjectName";

    /** 
        Get the default value of an Attribute.  Works only for Attributes which have default values,
        and which are part of the configuration.
        
        @param name  the name of the configuration Attribute
     */
    public String getDefaultValue( final String name );
}