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					|  |  |  |  |  * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net) | 
			
		
	
		
			
				
					|  |  |  |  |  * | 
			
		
	
		
			
				
					|  |  |  |  |  * 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
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					|  |  |  |  |  * | 
			
		
	
		
			
				
					|  |  |  |  |  * 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. | 
			
		
	
		
			
				
					|  |  |  |  |  */ | 
			
		
	
		
			
				
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					|  |  |  |  | java | 
			
		
	
		
			
				
					|  |  |  |  | 	// 导入所需的包  
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					|  |  |  |  | 	package net.micode.notes.gtask.data;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	import android.database.Cursor; // 用于数据库查询结果的游标  
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					|  |  |  |  | 	import org.json.JSONObject; // JSON对象类  
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					|  |  |  |  | 	// 定义一个抽象类Node,它代表了一个节点(如任务、笔记等)的基本属性和行为  
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					|  |  |  |  | 	public abstract class Node {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 定义同步操作的常量,用于指示节点的同步状态或要执行的同步动作  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_NONE = 0; // 无操作  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_ADD_REMOTE = 1; // 在远程添加  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_ADD_LOCAL = 2; // 在本地添加  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_DEL_REMOTE = 3; // 在远程删除  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_DEL_LOCAL = 4; // 在本地删除  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_UPDATE_REMOTE = 5; // 更新远程节点  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_UPDATE_LOCAL = 6; // 更新本地节点  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_UPDATE_CONFLICT = 7; // 更新冲突  
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					|  |  |  |  | 	    public static final int SYNC_ACTION_ERROR = 8; // 同步错误  
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					|  |  |  |  | 	    // 定义节点的私有属性  
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					|  |  |  |  | 	    private String mGid; // 节点的全局唯一标识符  
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					|  |  |  |  | 	    private String mName; // 节点的名称  
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					|  |  |  |  | 	    private long mLastModified; // 节点最后修改的时间戳  
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					|  |  |  |  | 	    private boolean mDeleted; // 节点是否被删除的标志  
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					|  |  |  |  | 	    // 构造方法,初始化节点的属性  
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					|  |  |  |  | 	    public Node() {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        mGid = null; // GID初始化为null,表示新创建的节点还没有GID  
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					|  |  |  |  | 	        mName = ""; // 名称初始化为空字符串  
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					|  |  |  |  | 	        mLastModified = 0; // 最后修改时间初始化为0,表示节点还没有被修改过  
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					|  |  |  |  | 	        mDeleted = false; // 删除标志初始化为false,表示节点没有被删除  
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 抽象方法,用于获取创建节点的动作JSON对象,具体实现由子类提供  
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					|  |  |  |  | 	    public abstract JSONObject getCreateAction(int actionId);   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 抽象方法,用于获取更新节点的动作JSON对象,具体实现由子类提供  
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					|  |  |  |  | 	    public abstract JSONObject getUpdateAction(int actionId);   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 抽象方法,用于从远程JSON对象设置节点的内容,具体实现由子类提供  
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					|  |  |  |  | 	    public abstract void setContentByRemoteJSON(JSONObject js);   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 抽象方法,用于从本地JSON对象设置节点的内容,具体实现由子类提供  
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					|  |  |  |  | 	    public abstract void setContentByLocalJSON(JSONObject js);   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 抽象方法,用于将节点的内容转换为本地JSON对象,具体实现由子类提供  
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					|  |  |  |  | 	    public abstract JSONObject getLocalJSONFromContent();   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 抽象方法,用于根据数据库游标获取节点的同步动作,具体实现由子类提供  
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					|  |  |  |  | 	    public abstract int getSyncAction(Cursor c);   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 设置节点的GID  
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					|  |  |  |  | 	    public void setGid(String gid) {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        this.mGid = gid;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 获取节点的GID  
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					|  |  |  |  | 	    public String getGid() {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        return this.mGid;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 设置节点的名称  
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					|  |  |  |  | 	    public void setName(String name) {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        this.mName = name;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 获取节点的名称  
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					|  |  |  |  | 	    public String getName() {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        return this.mName;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 设置节点最后修改的时间戳  
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					|  |  |  |  | 	    public void setLastModified(long lastModified) {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        this.mLastModified = lastModified;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 获取节点最后修改的时间戳  
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					|  |  |  |  | 	    public long getLastModified() {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        return this.mLastModified;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 设置节点是否被删除的标志  
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					|  |  |  |  | 	    public void setDeleted(boolean deleted) {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        this.mDeleted = deleted;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    // 获取节点是否被删除的标志  
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					|  |  |  |  | 	    public boolean getDeleted() {   | 
			
		
	
		
			
				
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					|  |  |  |  | 	        return this.mDeleted;   | 
			
		
	
		
			
				
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					|  |  |  |  | 	    }   | 
			
		
	
		
			
				
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					|  |  |  |  | 	} |