123xiaomi/Node.java

/*
 * 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.
 */

/**
 * 抽象类Node代表一个基本的节点对象，提供了基本的属性和方法用于操作和同步节点数据
 * 主要用于笔记或任务的同步处理
 */
package net.micode.notes.gtask.data;

import android.database.Cursor;
import org.json.JSONObject;

public abstract class Node {
    // 定义同步操作类型常量
    public static final int SYNC_ACTION_NONE = 0;
    public static final int SYNC_ACTION_ADD_REMOTE = 1;
    public static final int SYNC_ACTION_ADD_LOCAL = 2;
    public static final int SYNC_ACTION_DEL_REMOTE = 3;
    public static final int SYNC_ACTION_DEL_LOCAL = 4;
    public static final int SYNC_ACTION_UPDATE_REMOTE = 5;
    public static final int SYNC_ACTION_UPDATE_LOCAL = 6;
    public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;
    public static final int SYNC_ACTION_ERROR = 8;

    // 节点的基本属性
    private String mGid;
    private String mName;
    private long mLastModified;
    private boolean mDeleted;

    /**
     * 默认构造方法，初始化节点的基本属性
     */
    public Node() {
        mGid = null;
        mName = "";
        mLastModified = 0;
        mDeleted = false;
    }

    /**
     * 根据操作ID生成创建操作的JSON对象
     * @param actionId 操作ID，表示需要执行的同步操作类型
     * @return 返回一个包含创建操作信息的JSON对象
     */
    public abstract JSONObject getCreateAction(int actionId);

    /**
     * 根据操作ID生成更新操作的JSON对象
     * @param actionId 操作ID，表示需要执行的同步操作类型
     * @return 返回一个包含更新操作信息的JSON对象
     */
    public abstract JSONObject getUpdateAction(int actionId);

    /**
     * 通过远程JSON对象设置节点内容
     * @param js 远程JSON对象，包含节点的最新数据
     */
    public abstract void setContentByRemoteJSON(JSONObject js);

    /**
     * 通过本地JSON对象设置节点内容
     * @param js 本地JSON对象，包含节点的现有数据
     */
    public abstract void setContentByLocalJSON(JSONObject js);

    /**
     * 从节点内容生成本地JSON对象
     * @return 返回一个包含节点当前状态的JSON对象
     */
    public abstract JSONObject getLocalJSONFromContent();

    /**
     * 根据数据库游标确定同步操作类型
     * @param c 数据库游标，指向查询到的节点数据
     * @return 返回一个整数，表示需要执行的同步操作类型
     */
    public abstract int getSyncAction(Cursor c);

    // 以下为节点属性的getter和setter方法
    public void setGid(String gid) {
        this.mGid = gid;
    }

    public void setName(String name) {
        this.mName = name;
    }

    public void setLastModified(long lastModified) {
        this.mLastModified = lastModified;
    }

    public void setDeleted(boolean deleted) {
        this.mDeleted = deleted;
    }

    public String getGid() {
        return this.mGid;
    }

    public String getName() {
        return this.mName;
    }

    public long getLastModified() {
        return this.mLastModified;
    }

    public boolean getDeleted() {
        return this.mDeleted;
    }

}