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/**
 *  Copyright (c) 1997-2013, tinygroup.org ([email protected]).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 * --------------------------------------------------------------------------
 *  版权 (c) 1997-2013, tinygroup.org ([email protected]).
 *
 *  本开源软件遵循 GPL 3.0 协议;
 *  如果您不遵循此协议，则不被允许使用此文件。
 *  你可以从下面的地址获取完整的协议文本
 *
 *       http://www.gnu.org/licenses/gpl.html
 */
package org.tinygroup.config;

import java.util.List;

/**
 * 多区域配置接口
 * 
 * @author luoguo
 * 
 */
public interface MultiAreaConfig extends Config {
	/**
	 * 增加区域，增加的越早，优先级越低
	 * 
	 * @param area
	 *            如果域已经存在，则忽略
	 */
	void addArea(String area);

	/**
	 * 设置当前默认配置区域
	 * 
	 * @param area
	 */
	void setDefaultArea(String area);

	/**
	 * 返回当前默认区域
	 * 
	 * @return
	 */
	String getDefaultArea();

	/**
	 * 返回默认区域配置
	 * 
	 * @return
	 */
	Config getDefaultConfig();

	/**
	 * 返回指定区域的配置
	 * 
	 * @param areaName
	 * @return 如果找不到，则返回空
	 */
	Config getConfig(String areaName);

	/**
	 * 返回所有区域配置
	 * 
	 * @return
	 */
	List getAreaList();
}