/*
 * 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
 *
 * 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.
 */
// Node类定义了同步操作的基本方法和属性
package net.micode.notes.gtask.data;

import android.database.Cursor;

import org.json.JSONObject;

public abstract class Node {
      // 定义同步操作的常量
    public static final int SYNC_ACTION_NONE = 0;
 // 无需同步操作
    public static final int SYNC_ACTION_ADD_REMOTE = 1;// 在远程添加

    public static final int SYNC_ACTION_ADD_LOCAL = 2;// 在本地添加

    public static final int SYNC_ACTION_DEL_REMOTE = 3;// 在远程删除

    public static final int SYNC_ACTION_DEL_LOCAL = 4;// 在本地删除

    public static final int SYNC_ACTION_UPDATE_REMOTE = 5; // 更新远程

    public static final int SYNC_ACTION_UPDATE_LOCAL = 6;// 更新本地

    public static final int SYNC_ACTION_UPDATE_CONFLICT = 7; // 更新冲突

    public static final int SYNC_ACTION_ERROR = 8;// 同步错误
   // 节点的全局唯一标识符
    private String mGid;
    // 节点的名称
    private String mName;
    // 节点最后修改时间
    private long mLastModified;
    // 节点是否已被删除
    private boolean mDeleted;
// 默认构造函数
    public Node() {
        mGid = null;
        mName = "";
        mLastModified = 0;
        mDeleted = false;
    }
  // 抽象方法，获取创建操作的JSON对象
    public abstract JSONObject getCreateAction(int actionId);
 // 抽象方法，获取更新操作的JSON对象
    public abstract JSONObject getUpdateAction(int actionId);
  // 抽象方法，根据远程JSON设置内容
    public abstract void setContentByRemoteJSON(JSONObject js);
    // 抽象方法，根据本地JSON设置内容
    public abstract void setContentByLocalJSON(JSONObject js);
    // 抽象方法，从内容获取本地JSON对象
    public abstract JSONObject getLocalJSONFromContent();
   // 抽象方法，获取同步操作类型
    public abstract int getSyncAction(Cursor c);
   // 设置全局唯一标识符
    public void setGid(String gid) {
        this.mGid = gid;
    }
  // 设置节点名称
    public void setName(String name) {
        this.mName = name;
    }
 // 设置最后修改时间
    public void setLastModified(long lastModified) {
        this.mLastModified = lastModified;
    }
  // 设置节点是否已删除
    public void setDeleted(boolean deleted) {
        this.mDeleted = deleted;
    }
  // 获取全局唯一标识符
    public String getGid() {
        return this.mGid;
    }
  // 获取节点名称
    public String getName() {
        return this.mName;
    }
   // 获取最后修改时间
    public long getLastModified() {
        return this.mLastModified;
    }
 // 获取节点是否已删除
    public boolean getDeleted() {
        return this.mDeleted;
    }

}