/* * 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. */ package net.micode.notes.gtask.data; import android.database.Cursor; import org.json.JSONObject; /** * 同步节点抽象类,定义同步操作的基础模型和行为 * 用于表示Google Tasks中的任务、列表等实体的同步状态和数据 */ public abstract class Node { // 同步操作类型常量定义 public static final int SYNC_ACTION_NONE = 0;// 无操作 public static final int SYNC_ACTION_ADD_REMOTE = 1;// 远程添加 public static final int SYNC_ACTION_ADD_LOCAL = 2;// 本地添加 public static final int SYNC_ACTION_DEL_REMOTE = 3;// 远程删除 public static final int SYNC_ACTION_DEL_LOCAL = 4;// 本地删除 public static final int SYNC_ACTION_UPDATE_REMOTE = 5;// 远程更新 public static final int SYNC_ACTION_UPDATE_LOCAL = 6;// 本地更新 public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;// 更新冲突 public static final int SYNC_ACTION_ERROR = 8;// 操作错误 // 节点核心属性 private String mGid;// Google Tasks全局唯一标识符(GID private String mName;// 节点名称(如任务标题、列表名称) private long mLastModified;// 最后修改时间戳 private boolean mDeleted;// 是否已删除标记 /** * 构造方法,初始化节点默认状态 */ public Node() { mGid = null; mName = ""; mLastModified = 0; mDeleted = false; } // ====================== 抽象方法(子类必须实现) ====================== /** * 获取创建操作的JSON数据 * @param actionId 操作ID,用于标识不同的创建场景 * @return 包含创建操作的JSON对象 */ public abstract JSONObject getCreateAction(int actionId); /** * 获取更新操作的JSON数据 * @param actionId 操作ID,用于标识不同的更新场景 * @return 包含更新操作的JSON对象 */ public abstract JSONObject getUpdateAction(int actionId); /** * 从远程JSON数据中解析并设置节点内容(供同步模块调用) * @param js 包含远程数据的JSON对象 */ public abstract void setContentByRemoteJSON(JSONObject js); /** * 从本地JSON数据中解析并设置节点内容(供本地存储模块调用) * @param js 包含本地数据的JSON对象 */ public abstract void setContentByLocalJSON(JSONObject js); /** * 将节点内容转换为本地存储的JSON格式 * @return 表示节点内容的JSON对象 */ public abstract JSONObject getLocalJSONFromContent(); /** * 获取节点的同步操作类型(根据数据库游标数据判断) * @param c 包含节点数据的数据库游标 * @return 同步操作类型常量(如SYNC_ACTION_ADD_LOCAL) */ public abstract int getSyncAction(Cursor c); // ====================== 基础属性访问方法 ====================== 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; } }