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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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// 导入所需的包
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package net.micode.notes.gtask.data; // 声明该类属于 net.micode.notes.gtask.data 包
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import android.database.Cursor; // 导入Cursor类，用于数据库查询结果
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import android.util.Log; // 导入Log类，用于日志记录
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import net.micode.notes.tool.GTaskStringUtils; // 导入GTaskStringUtils工具类
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import org.json.JSONException; // 导入JSONException，用于捕获JSON相关异常
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import org.json.JSONObject; // 导入JSONObject类，用于JSON数据处理
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// 定义MetaData类，继承自Task类
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public class MetaData extends Task {
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private final static String TAG = MetaData.class.getSimpleName(); // 定义TAG常量，表示该类的简短名称，用于日志打印
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private String mRelatedGid = null; // 声明mRelatedGid变量，用于存储相关的Gid
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// 设置Meta数据的方法，接受gid和meta信息（JSON对象）
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public void setMeta(String gid, JSONObject metaInfo) {
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try {
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// 向metaInfo对象中添加一个名为META_HEAD_GTASK_ID的字段，值为传入的gid
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metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
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} catch (JSONException e) {
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// 如果发生JSON异常，记录错误日志
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Log.e(TAG, "failed to put related gid");
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}
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// 将metaInfo转为字符串并设置到notes字段中
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setNotes(metaInfo.toString());
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// 设置任务的名称为META_NOTE_NAME
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setName(GTaskStringUtils.META_NOTE_NAME);
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}
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// 获取相关的Gid
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public String getRelatedGid() {
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return mRelatedGid; // 返回mRelatedGid的值
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}
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// 重写isWorthSaving方法，判断该任务是否值得保存
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@Override
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public boolean isWorthSaving() {
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// 如果notes不为null，返回true；否则返回false
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return getNotes() != null;
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}
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// 重写setContentByRemoteJSON方法，从远程JSON对象设置内容
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@Override
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public void setContentByRemoteJSON(JSONObject js) {
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super.setContentByRemoteJSON(js); // 调用父类的setContentByRemoteJSON方法
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if (getNotes() != null) {
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try {
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// 尝试将notes字段转为JSONObject对象
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JSONObject metaInfo = new JSONObject(getNotes().trim());
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// 从metaInfo中提取Gid并赋值给mRelatedGid
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mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
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} catch (JSONException e) {
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// 如果发生JSON异常，记录警告日志，并将mRelatedGid设置为null
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Log.w(TAG, "failed to get related gid");
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mRelatedGid = null;
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}
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}
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}
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// 重写setContentByLocalJSON方法，禁止调用此方法
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@Override
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public void setContentByLocalJSON(JSONObject js) {
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// 抛出IllegalAccessError，表示该方法不应被调用
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throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
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}
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// 重写getLocalJSONFromContent方法，禁止调用此方法
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@Override
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public JSONObject getLocalJSONFromContent() {
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// 抛出IllegalAccessError，表示该方法不应被调用
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throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
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}
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// 重写getSyncAction方法，禁止调用此方法
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@Override
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public int getSyncAction(Cursor c) {
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// 抛出IllegalAccessError，表示该方法不应被调用
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throw new IllegalAccessError("MetaData:getSyncAction should not be called");
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}
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}
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