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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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// 抽象类Node，可能作为数据节点相关操作的基础类，定义了一些通用规范和抽象方法供子类实现
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public abstract class Node {
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// 同步操作相关的各种类型常量，用于标记不同的同步动作情况
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public static final int SYNC_ACTION_NONE = 0;
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public static final int SYNC_ACTION_ADD_REMOTE = 1;
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public static final int SYNC_ACTION_ADD_LOCAL = 2;
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public static final int SYNC_ACTION_DEL_REMOTE = 3;
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public static final int SYNC_ACTION_DEL_LOCAL = 4;
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public static final int SYNC_ACTION_UPDATE_REMOTE = 5;
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public static final int SYNC_ACTION_UPDATE_LOCAL = 6;
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public static final int SYNC_ACTION_UPDATE_CONFLICT = 7;
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public static final int SYNC_ACTION_ERROR = 8;
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// 存储全局唯一标识符（GID），初始值为null
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private String mGid;
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// 节点名称，初始为空字符串
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private String mName;
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// 最后修改时间戳，初始为0
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private long mLastModified;
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// 表示节点是否被删除的标志，初始为false
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private boolean mDeleted;
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// 构造函数，初始化各成员变量
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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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// 抽象方法，获取创建操作对应的JSON对象，具体由子类实现
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public abstract JSONObject getCreateAction(int actionId);
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// 抽象方法，获取更新操作对应的JSON对象，子类按业务逻辑实现
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public abstract JSONObject getUpdateAction(int actionId);
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// 抽象方法，依据远程JSON数据设置节点内容，子类负责解析填充
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public abstract void setContentByRemoteJSON(JSONObject js);
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// 抽象方法，依据本地JSON数据设置节点内容，由子类实现具体逻辑
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public abstract void setContentByLocalJSON(JSONObject js);
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// 抽象方法，从节点内容生成本地JSON对象，子类确定JSON结构
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public abstract JSONObject getLocalJSONFromContent();
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// 抽象方法，根据游标获取节点的同步操作类型，子类判断逻辑
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public abstract int getSyncAction(Cursor c);
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// 设置GID的方法
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public void setGid(String gid) {
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this.mGid = gid;
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}
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// 设置名称的方法
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public void setName(String name) {
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this.mName = name;
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}
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// 设置最后修改时间的方法
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public void setLastModified(long lastModified) {
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this.mLastModified = lastModified;
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}
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// 设置是否删除状态的方法
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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GID的方法
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public String getGid() {
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return this.mGid;
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}
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// 获取名称的方法
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public String getName() {
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return this.mName;
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}
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// 获取最后修改时间的方法
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public long getLastModified() {
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return this.mLastModified;
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}
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// 获取是否删除状态的方法
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public boolean getDeleted() {
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return this.mDeleted;
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}
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} |
