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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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public class MetaData extends Task {
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// 类标识常量，用于日志记录
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private final static String TAG = MetaData.class.getSimpleName();
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// 存储关联的GTask ID
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private String mRelatedGid = null;
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// 设置元数据：将gid存入JSON对象，并作为Task的notes内容
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public void setMeta(String gid, JSONObject metaInfo) {
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try {
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// 在JSON元信息中添加GTASK_ID字段
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metaInfo.put(GTaskStringUtils.META_HEAD_GTASK_ID, gid);
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} catch (JSONException e) {
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// JSON操作异常处理
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Log.e(TAG, "failed to put related gid");
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}
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// 将JSON对象转为字符串保存到Task的notes属性
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setNotes(metaInfo.toString());
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// 设置任务名称为预定义的元数据标识
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setName(GTaskStringUtils.META_NOTE_NAME);
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}
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// 获取关联的GTask ID
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public String getRelatedGid() {
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return mRelatedGid;
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}
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// 判断是否需要保存：仅当notes非空时需保存
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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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// 从远程JSON解析数据（服务端→本地）
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@Override
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public void setContentByRemoteJSON(JSONObject js) {
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// 先调用父类解析基础字段
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super.setContentByRemoteJSON(js);
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// 解析notes中的关联ID
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if (getNotes() != null) {
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try {
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// 将notes内容转为JSON对象
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JSONObject metaInfo = new JSONObject(getNotes().trim());
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// 提取META_HEAD_GTASK_ID字段值
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mRelatedGid = metaInfo.getString(GTaskStringUtils.META_HEAD_GTASK_ID);
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} catch (JSONException e) {
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// 解析失败时清空关联ID
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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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// 以下方法禁止调用 //
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// 本地数据解析方法（本不应被调用）
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@Override
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public void setContentByLocalJSON(JSONObject js) {
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// 此方法设计上不应被调用，直接抛出错误
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throw new IllegalAccessError("MetaData:setContentByLocalJSON should not be called");
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}
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// 生成本地JSON方法（本不应被调用）
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@Override
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public JSONObject getLocalJSONFromContent() {
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// 此方法设计上不应被调用，直接抛出错误
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throw new IllegalAccessError("MetaData:getLocalJSONFromContent should not be called");
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}
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// 同步操作判断方法（本不应被调用）
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@Override
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public int getSyncAction(Cursor c) {
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// 此方法设计上不应被调用，直接抛出错误
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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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