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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 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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// 用于日志记录的标签，简化类名获取
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private final static String TAG = MetaData.class.getSimpleName();
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// 存储相关任务的GID（全局唯一标识符）
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private String mRelatedGid = null;
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// 设置元数据，将给定的GID和元数据信息存储为JSON格式的字符串
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public void setMeta(String gid, JSONObject metaInfo) {
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try {
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// 将GID添加到元数据信息的JSON对象中
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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GID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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// 将元数据信息转换为字符串并设置为笔记内容
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setNotes(metaInfo.toString());
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// 设置任务名称为特定的元数据笔记名称
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setName(GTaskStringUtils.META_NOTE_NAME);
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}
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// 获取相关任务的GID
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public String getRelatedGid() {
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return mRelatedGid;
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}
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// 判断元数据是否值得保存，即笔记内容不为空
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@Override
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public boolean isWorthSaving() {
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return getNotes()!= null;
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}
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// 根据远程JSON数据设置内容，同时从笔记内容中解析出相关任务的GID
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@Override
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public void setContentByRemoteJSON(JSONObject js) {
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super.setContentByRemoteJSON(js);
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if (getNotes()!= null) {
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try {
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// 将笔记内容解析为JSON对象
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JSONObject metaInfo = new JSONObject(getNotes().trim());
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// 从JSON对象中获取相关任务的GID
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mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
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} catch (JSONException e) {
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// 如果获取GID失败，记录警告日志并将GID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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// 此方法不应被调用，抛出非法访问错误
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@Override
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public void setContentByLocalJSON(JSONObject js) {
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throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
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}
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// 此方法不应被调用，抛出非法访问错误
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@Override
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public JSONObject getLocalJSONFromContent() {
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throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
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}
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// 此方法不应被调用，抛出非法访问错误
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@Override
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public int getSyncAction(Cursor c) {
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throw new IllegalAccessError("MetaData:getSyncAction should not be called");
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}
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} |
