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/*
 * Copyright 2015-2017 GenerallyCloud.com
 *  
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *  
 * 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.
 */
package com.generallycloud.baseio.component;

/**
 * @author wangkai
 *
 */
public class DoubleLinkableGroup {

	private DoubleLinkable rootLink;
	
	private DoubleLinkable tailLink;

	public DoubleLinkable getRootLink() {
		return rootLink;
	}
	
	public void addLink(DoubleLinkable linkable){
		
		if (rootLink == null) {
			rootLink = linkable;
			tailLink = rootLink;
			return;
		}
		
		tailLink.setNext(linkable);
		
		tailLink = linkable;
	}
	
	public void removeLink(DoubleLinkable linkable){
		//TODO removeLink
		throw new UnsupportedOperationException();
	}
	
	public void clear(){
		rootLink = null;
		tailLink = null;
	}
	
}