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// 多行注释，说明版权信息和许可证
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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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// 导入所需的类
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package net.micode.notes.gtask.data;
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import android.database.Cursor;
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import android.util.Log;
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import net.micode.notes.tool.GTaskStringUtils;
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import org.json.JSONException;
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import org.json.JSONObject;
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// MetaData类继承自Task类，用于处理与任务相关的元数据
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public class MetaData extends Task {
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// 类的标签，用于日志记录
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private final static String TAG = MetaData.class.getSimpleName();
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// 用于存储相关任务的全局唯一标识符
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private String mRelatedGid = null;
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// 设置元数据信息
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public void setMeta(String gid, JSONObject metaInfo) {
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try {
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// 将全局唯一标识符添加到元数据信息中
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metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
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} catch (JSONException e) {
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// 如果添加失败，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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// 设置任务的备注信息为元数据的字符串表示
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setNotes(metaInfo.toString());
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// 设置任务的名称为特定的元数据任务名称
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setName(GTaskStringUtils.META_NOTE_NAME);
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}
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// 获取相关任务的全局唯一标识符
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public String getRelatedGid() {
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return mRelatedGid;
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}
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// 重写isWorthSaving方法，判断任务是否值得保存
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@Override
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public boolean isWorthSaving() {
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// 如果任务的备注信息不为空，则认为值得保存
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return getNotes() != null;
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}
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// 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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// 首先调用父类的设置内容方法
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super.setContentByRemoteJSON(js);
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// 如果备注信息不为空
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if (getNotes() != null) {
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try {
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// 将备注信息转换为JSON对象，并获取全局唯一标识符
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JSONObject metaInfo = new JSONObject(getNotes().trim());
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mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
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} catch (JSONException e) {
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// 如果转换失败，记录警告日志，并设置全局唯一标识符为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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// 从本地JSON对象设置内容，此方法不应该被调用
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@Override
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public void setContentByLocalJSON(JSONObject js) {
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// 如果被调用，抛出异常
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throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
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}
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// 从内容获取本地JSON对象，此方法不应该被调用
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@Override
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public JSONObject getLocalJSONFromContent() {
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// 如果被调用，抛出异常
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throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
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}
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// 获取同步操作，此方法不应该被调用
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@Override
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public int getSyncAction(Cursor c) {
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// 如果被调用，抛出异常
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throw new IllegalAccessError("MetaData:getSyncAction should not be called");
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}
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} |
