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/*
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* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package net.micode.notes.gtask.data;
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import android.database.Cursor;
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import org.json.JSONObject;
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/**
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* 表示同步系统中节点的抽象基类
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* 定义了节点基础属性和同步操作行为
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*/
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public abstract class Node {
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// 同步操作常量 - 表示不需要同步操作
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public static final int SYNC_ACTION_NONE = 0;
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// 同步操作常量 - 表示需要在远程服务器添加节点
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public static final int SYNC_ACTION_ADD_REMOTE = 1;
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// 同步操作常量 - 表示需要在本地数据库添加节点
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public static final int SYNC_ACTION_ADD_LOCAL = 2;
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// 同步操作常量 - 表示需要在远程服务器删除节点
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public static final int SYNC_ACTION_DEL_REMOTE = 3;
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// 同步操作常量 - 表示需要在本地数据库删除节点
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public static final int SYNC_ACTION_DEL_LOCAL = 4;
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// 同步操作常量 - 表示需要更新远程服务器节点
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public static final int SYNC_ACTION_UPDATE_REMOTE = 5;
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// 同步操作常量 - 表示需要更新本地数据库节点
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public static final int SYNC_ACTION_UPDATE_LOCAL = 6;
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// 同步操作常量 - 表示本地和远程数据冲突
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public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;
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// 同步操作常量 - 表示同步过程中发生错误
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public static final int SYNC_ACTION_ERROR = 8;
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// 节点全局唯一标识符 (GID)
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private String mGid;
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// 节点名称
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private String mName;
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// 节点最后修改时间戳
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private long mLastModified;
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// 节点删除状态标记
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private boolean mDeleted;
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/**
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* 节点构造函数
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* 初始化默认状态:GID为空、名称为空字符串、
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* 最后修改时间为0、未删除状态
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*/
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public Node() {
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mGid = null;
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mName = "";
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mLastModified = 0;
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mDeleted = false;
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}
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/**
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* 获取创建操作的JSON数据
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* @param actionId 操作ID
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* @return 创建操作对应的JSON对象
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*/
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public abstract JSONObject getCreateAction(int actionId);
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/**
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* 获取更新操作的JSON数据
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* @param actionId 操作ID
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* @return 更新操作对应的JSON对象
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*/
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public abstract JSONObject getUpdateAction(int actionId);
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/**
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* 从远程JSON数据设置节点内容
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* @param js 来自远程服务器的JSON数据
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*/
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public abstract void setContentByRemoteJSON(JSONObject js);
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/**
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* 从本地JSON数据设置节点内容
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* @param js 来自本地数据库的JSON数据
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*/
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public abstract void setContentByLocalJSON(JSONObject js);
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/**
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* 从节点内容生成本地JSON数据
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* @return 用于本地存储的JSON对象
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*/
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public abstract JSONObject getLocalJSONFromContent();
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/**
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* 根据数据库游标确定同步操作类型
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* @param c 数据库游标对象
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* @return 同步操作类型常量
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*/
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public abstract int getSyncAction(Cursor c);
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// 以下是基础属性的访问方法 //
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public void setGid(String gid) {
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this.mGid = gid;
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}
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public void setName(String name) {
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this.mName = name;
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}
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public void setLastModified(long lastModified) {
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this.mLastModified = lastModified;
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}
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public void setDeleted(boolean deleted) {
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this.mDeleted = deleted;
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}
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public String getGid() {
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return this.mGid;
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}
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public String getName() {
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return this.mName;
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}
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public long getLastModified() {
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return this.mLastModified;
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}
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public boolean getDeleted() {
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return this.mDeleted;
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}
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}
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