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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.appwidget.AppWidgetManager;
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import android.content.ContentResolver;
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import android.content.ContentValues;
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import android.content.Context;
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import android.database.Cursor;
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import android.net.Uri;
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import android.util.Log;
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import net.micode.notes.data.Notes;
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import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.gtask.exception.ActionFailureException;
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import net.micode.notes.tool.GTaskStringUtils;
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import net.micode.notes.tool.ResourceParser;
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import org.json.JSONArray;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.util.ArrayList;
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/**
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* SqlNote 类用于管理与 Notes 数据库相关的操作，
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* 提供对笔记数据的增、删、查、改操作。
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* 该类将与 GTask 等数据交互，使用 SQLite 数据库与 ContentProvider 进行数据存取。
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*/
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public class SqlNote {
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// 日志标签，用于输出调试信息
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private static final String TAG = SqlNote.class.getSimpleName();
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// 定义一个无效的 ID 值，用于初始化或标识错误的 ID
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private static final int INVALID_ID = -99999;
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// 定义一个 Notes 表的列名数组，用于查询操作中获取不同的列数据
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public static final String[] PROJECTION_NOTE = new String[] {
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NoteColumns.ID, // 笔记的 ID
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NoteColumns.ALERTED_DATE, // 提醒日期
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NoteColumns.BG_COLOR_ID, // 背景颜色 ID
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NoteColumns.CREATED_DATE, // 创建日期
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NoteColumns.HAS_ATTACHMENT, // 是否有附件
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NoteColumns.MODIFIED_DATE, // 修改日期
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NoteColumns.NOTES_COUNT, // 笔记内容数量
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NoteColumns.PARENT_ID, // 父笔记 ID
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NoteColumns.SNIPPET, // 笔记内容的摘录
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NoteColumns.TYPE, // 笔记类型
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NoteColumns.WIDGET_ID, // 小部件 ID
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NoteColumns.WIDGET_TYPE, // 小部件类型
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NoteColumns.SYNC_ID, // 同步 ID
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NoteColumns.LOCAL_MODIFIED, // 本地修改标记
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NoteColumns.ORIGIN_PARENT_ID, // 原始父笔记 ID
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NoteColumns.GTASK_ID, // Google 任务 ID
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NoteColumns.VERSION // 笔记版本
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};
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// 每一列在查询返回的 Cursor 中的索引
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public static final int ID_COLUMN = 0;
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public static final int ALERTED_DATE_COLUMN = 1;
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public static final int BG_COLOR_ID_COLUMN = 2;
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public static final int CREATED_DATE_COLUMN = 3;
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public static final int HAS_ATTACHMENT_COLUMN = 4;
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public static final int MODIFIED_DATE_COLUMN = 5;
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public static final int NOTES_COUNT_COLUMN = 6;
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public static final int PARENT_ID_COLUMN = 7;
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public static final int SNIPPET_COLUMN = 8;
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public static final int TYPE_COLUMN = 9;
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public static final int WIDGET_ID_COLUMN = 10;
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public static final int WIDGET_TYPE_COLUMN = 11;
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public static final int SYNC_ID_COLUMN = 12;
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public static final int LOCAL_MODIFIED_COLUMN = 13;
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public static final int ORIGIN_PARENT_ID_COLUMN = 14;
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public static final int GTASK_ID_COLUMN = 15;
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public static final int VERSION_COLUMN = 16;
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// 上下文和内容解析器，提供与系统服务的交互接口
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private Context mContext;
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private ContentResolver mContentResolver;
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// 是否是新创建的笔记
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private boolean mIsCreate;
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// 笔记的各类数据成员
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private long mId;
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private long mAlertDate;
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private int mBgColorId;
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private long mCreatedDate;
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private int mHasAttachment;
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private long mModifiedDate;
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private long mParentId;
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private String mSnippet;
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private int mType;
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private int mWidgetId;
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private int mWidgetType;
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private long mOriginParent;
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private long mVersion;
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// 保存笔记的差异数据
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private ContentValues mDiffNoteValues;
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// 存储与笔记相关的数据列表
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private ArrayList<SqlData> mDataList;
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}
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// 构造函数：用于创建一个新笔记对象，初始化其成员变量
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public SqlNote(Context context) {
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// 初始化上下文和内容解析器，用于访问应用的内容提供者
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mContext = context;
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mContentResolver = context.getContentResolver();
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// 标记这是一个新创建的笔记
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mIsCreate = true;
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// 初始化各个成员变量，设置默认值
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mId = INVALID_ID; // 默认的无效ID
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mAlertDate = 0; // 默认没有提醒
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mBgColorId = ResourceParser.getDefaultBgId(context); // 获取默认背景颜色
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mCreatedDate = System.currentTimeMillis(); // 设置为当前时间戳
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mHasAttachment = 0; // 默认没有附件
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mModifiedDate = System.currentTimeMillis(); // 设置为当前时间戳
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mParentId = 0; // 默认父ID为0
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mSnippet = ""; // 默认笔记摘录为空字符串
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mType = Notes.TYPE_NOTE; // 默认笔记类型为普通笔记
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mWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID; // 默认小部件ID无效
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mWidgetType = Notes.TYPE_WIDGET_INVALIDE; // 默认小部件类型无效
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mOriginParent = 0; // 默认原始父ID为0
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mVersion = 0; // 默认版本为0
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mDiffNoteValues = new ContentValues(); // 用于存储笔记差异的ContentValues
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mDataList = new ArrayList<SqlData>(); // 初始化数据列表，用于存储与笔记相关的数据
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}
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// 构造函数：用于从数据库中的Cursor加载现有笔记对象
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public SqlNote(Context context, Cursor c) {
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// 初始化上下文和内容解析器
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mContext = context;
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mContentResolver = context.getContentResolver();
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// 标记这是一个已存在的笔记
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mIsCreate = false;
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// 从Cursor中加载数据
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loadFromCursor(c);
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// 初始化数据列表
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mDataList = new ArrayList<SqlData>();
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// 如果是普通笔记，加载相关的数据内容
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if (mType == Notes.TYPE_NOTE) {
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loadDataContent();
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}
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// 初始化差异数据的ContentValues
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mDiffNoteValues = new ContentValues();
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}
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// 构造函数：用于根据笔记ID从数据库加载笔记数据
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public SqlNote(Context context, long id) {
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// 初始化上下文和内容解析器
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mContext = context;
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mContentResolver = context.getContentResolver();
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// 标记这是一个已存在的笔记
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mIsCreate = false;
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// 根据ID加载数据
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loadFromCursor(id);
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// 初始化数据列表
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mDataList = new ArrayList<SqlData>();
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// 如果是普通笔记，加载相关的数据内容
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if (mType == Notes.TYPE_NOTE) {
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loadDataContent();
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}
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// 初始化差异数据的ContentValues
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mDiffNoteValues = new ContentValues();
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}
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// 私有方法：根据笔记ID加载数据，执行数据库查询，返回指定笔记的Cursor
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private void loadFromCursor(long id) {
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Cursor c = null;
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try {
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// 通过ID查询笔记数据
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c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
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new String[] {
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String.valueOf(id)
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}, null);
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// 如果查询结果不为空，移动Cursor到下一行并加载数据
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if (c != null) {
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c.moveToNext();
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loadFromCursor(c); // 从Cursor加载数据到当前对象
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} else {
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Log.w(TAG, "loadFromCursor: cursor = null"); // 如果Cursor为空，打印警告
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}
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} finally {
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// 查询完成后关闭Cursor
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if (c != null)
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c.close();
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}
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}
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// 私有方法：从Cursor中加载数据，将数据映射到当前对象的成员变量
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private void loadFromCursor(Cursor c) {
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// 根据列的索引从Cursor中获取数据并赋值给相应的成员变量
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mId = c.getLong(ID_COLUMN);
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mAlertDate = c.getLong(ALERTED_DATE_COLUMN);
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mBgColorId = c.getInt(BG_COLOR_ID_COLUMN);
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mCreatedDate = c.getLong(CREATED_DATE_COLUMN);
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mHasAttachment = c.getInt(HAS_ATTACHMENT_COLUMN);
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mModifiedDate = c.getLong(MODIFIED_DATE_COLUMN);
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mParentId = c.getLong(PARENT_ID_COLUMN);
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mSnippet = c.getString(SNIPPET_COLUMN);
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mType = c.getInt(TYPE_COLUMN);
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mWidgetId = c.getInt(WIDGET_ID_COLUMN);
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mWidgetType = c.getInt(WIDGET_TYPE_COLUMN);
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mVersion = c.getLong(VERSION_COLUMN);
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}
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// 私有方法：加载与笔记相关的数据内容，查询笔记的附加数据并存储在 mDataList 中
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private void loadDataContent() {
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Cursor c = null;
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mDataList.clear(); // 清空当前数据列表
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try {
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// 根据笔记ID查询相关的数据内容
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c = mContentResolver.query(Notes.CONTENT_DATA_URI, SqlData.PROJECTION_DATA,
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"(note_id=?)", new String[] {
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String.valueOf(mId)
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}, null);
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// 如果查询结果不为空，处理数据
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if (c != null) {
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if (c.getCount() == 0) {
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Log.w(TAG, "it seems that the note has not data"); // 如果没有数据，打印警告
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return;
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}
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// 遍历查询结果，将每一条数据加入到数据列表
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while (c.moveToNext()) {
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SqlData data = new SqlData(mContext, c);
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mDataList.add(data);
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}
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} else {
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Log.w(TAG, "loadDataContent: cursor = null"); // 如果Cursor为空，打印警告
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}
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} finally {
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// 查询完成后关闭Cursor
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if (c != null)
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c.close();
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}
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}
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// 设置笔记内容的方法
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public boolean setContent(JSONObject js) {
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try {
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// 从传入的JSONObject中获取笔记对象
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JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
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// 检查笔记类型是否为系统笔记，如果是，则打印警告日志
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if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_SYSTEM) {
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Log.w(TAG, "cannot set system folder");
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} else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_FOLDER) {
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// 如果是文件夹类型，只能更新摘要和类型
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// 更新摘要
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String snippet = note.has(NoteColumns.SNIPPET) ? note
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.getString(NoteColumns.SNIPPET) : "";
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if (mIsCreate || !mSnippet.equals(snippet)) {
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mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
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}
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mSnippet = snippet;
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// 更新类型
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int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
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: Notes.TYPE_NOTE;
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if (mIsCreate || mType != type) {
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mDiffNoteValues.put(NoteColumns.TYPE, type);
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}
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mType = type;
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} else if (note.getInt(NoteColumns.TYPE) == Notes.TYPE_NOTE) {
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// 如果是普通笔记类型，更新笔记的各种属性
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JSONArray dataArray = js.getJSONArray(GTaskStringUtils.META_HEAD_DATA);
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long id = note.has(NoteColumns.ID) ? note.getLong(NoteColumns.ID) : INVALID_ID;
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// 更新ID
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if (mIsCreate || mId != id) {
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mDiffNoteValues.put(NoteColumns.ID, id);
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}
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mId = id;
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// 更新提醒日期
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long alertDate = note.has(NoteColumns.ALERTED_DATE) ? note
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.getLong(NoteColumns.ALERTED_DATE) : 0;
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if (mIsCreate || mAlertDate != alertDate) {
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mDiffNoteValues.put(NoteColumns.ALERTED_DATE, alertDate);
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}
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mAlertDate = alertDate;
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// 更新背景颜色ID
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int bgColorId = note.has(NoteColumns.BG_COLOR_ID) ? note
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.getInt(NoteColumns.BG_COLOR_ID) : ResourceParser.getDefaultBgId(mContext);
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if (mIsCreate || mBgColorId != bgColorId) {
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mDiffNoteValues.put(NoteColumns.BG_COLOR_ID, bgColorId);
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}
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mBgColorId = bgColorId;
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// 更新创建日期
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long createDate = note.has(NoteColumns.CREATED_DATE) ? note
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.getLong(NoteColumns.CREATED_DATE) : System.currentTimeMillis();
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if (mIsCreate || mCreatedDate != createDate) {
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mDiffNoteValues.put(NoteColumns.CREATED_DATE, createDate);
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}
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mCreatedDate = createDate;
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// 更新是否有附件
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int hasAttachment = note.has(NoteColumns.HAS_ATTACHMENT) ? note
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.getInt(NoteColumns.HAS_ATTACHMENT) : 0;
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if (mIsCreate || mHasAttachment != hasAttachment) {
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mDiffNoteValues.put(NoteColumns.HAS_ATTACHMENT, hasAttachment);
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}
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mHasAttachment = hasAttachment;
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// 更新修改日期
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long modifiedDate = note.has(NoteColumns.MODIFIED_DATE) ? note
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.getLong(NoteColumns.MODIFIED_DATE) : System.currentTimeMillis();
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if (mIsCreate || mModifiedDate != modifiedDate) {
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mDiffNoteValues.put(NoteColumns.MODIFIED_DATE, modifiedDate);
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}
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mModifiedDate = modifiedDate;
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// 更新父ID
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long parentId = note.has(NoteColumns.PARENT_ID) ? note
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.getLong(NoteColumns.PARENT_ID) : 0;
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if (mIsCreate || mParentId != parentId) {
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mDiffNoteValues.put(NoteColumns.PARENT_ID, parentId);
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}
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mParentId = parentId;
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// 更新摘要
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String snippet = note.has(NoteColumns.SNIPPET) ? note
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.getString(NoteColumns.SNIPPET) : "";
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if (mIsCreate || !mSnippet.equals(snippet)) {
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mDiffNoteValues.put(NoteColumns.SNIPPET, snippet);
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}
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mSnippet = snippet;
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// 更新类型
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int type = note.has(NoteColumns.TYPE) ? note.getInt(NoteColumns.TYPE)
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: Notes.TYPE_NOTE;
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if (mIsCreate || mType != type) {
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mDiffNoteValues.put(NoteColumns.TYPE, type);
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}
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mType = type;
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// 更新小部件ID
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int widgetId = note.has(NoteColumns.WIDGET_ID) ? note.getInt(NoteColumns.WIDGET_ID)
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: AppWidgetManager.INVALID_APPWIDGET_ID;
|
|
|
if (mIsCreate || mWidgetId != widgetId) {
|
|
|
mDiffNoteValues.put(NoteColumns.WIDGET_ID, widgetId);
|
|
|
}
|
|
|
mWidgetId = widgetId;
|
|
|
|
|
|
// 更新小部件类型
|
|
|
int widgetType = note.has(NoteColumns.WIDGET_TYPE) ? note
|
|
|
.getInt(NoteColumns.WIDGET_TYPE) : Notes.TYPE_WIDGET_INVALIDE;
|
|
|
if (mIsCreate || mWidgetType != widgetType) {
|
|
|
mDiffNoteValues.put(NoteColumns.WIDGET_TYPE, widgetType);
|
|
|
}
|
|
|
mWidgetType = widgetType;
|
|
|
|
|
|
// 更新原始父ID
|
|
|
long originParent = note.has(NoteColumns.ORIGIN_PARENT_ID) ? note
|
|
|
.getLong(NoteColumns.ORIGIN_PARENT_ID) : 0;
|
|
|
if (mIsCreate || mOriginParent != originParent) {
|
|
|
mDiffNoteValues.put(NoteColumns.ORIGIN_PARENT_ID, originParent);
|
|
|
}
|
|
|
mOriginParent = originParent;
|
|
|
|
|
|
// 更新数据内容
|
|
|
for (int i = 0; i < dataArray.length(); i++) {
|
|
|
JSONObject data = dataArray.getJSONObject(i);
|
|
|
SqlData sqlData = null;
|
|
|
if (data.has(DataColumns.ID)) {
|
|
|
long dataId = data.getLong(DataColumns.ID);
|
|
|
for (SqlData temp : mDataList) {
|
|
|
if (dataId == temp.getId()) {
|
|
|
sqlData = temp;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (sqlData == null) {
|
|
|
sqlData = new SqlData(mContext);
|
|
|
mDataList.add(sqlData);
|
|
|
}
|
|
|
|
|
|
sqlData.setContent(data);
|
|
|
}
|
|
|
}
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
return false;
|
|
|
}
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
// 获取笔记内容的方法
|
|
|
public JSONObject getContent() {
|
|
|
try {
|
|
|
JSONObject js = new JSONObject();
|
|
|
|
|
|
if (mIsCreate) {
|
|
|
Log.e(TAG, "it seems that we haven't created this in database yet");
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
JSONObject note = new JSONObject();
|
|
|
if (mType == Notes.TYPE_NOTE) {
|
|
|
// 如果是普通笔记类型，构建包含所有属性的JSONObject
|
|
|
note.put(NoteColumns.ID, mId);
|
|
|
note.put(NoteColumns.ALERTED_DATE, mAlertDate);
|
|
|
note.put(NoteColumns.BG_COLOR_ID, mBgColorId);
|
|
|
note.put(NoteColumns.CREATED_DATE, mCreatedDate);
|
|
|
note.put(NoteColumns.HAS_ATTACHMENT, mHasAttachment);
|
|
|
note.put(NoteColumns.MODIFIED_DATE, mModifiedDate);
|
|
|
note.put(NoteColumns.PARENT_ID, mParentId);
|
|
|
note.put(NoteColumns.SNIPPET, mSnippet);
|
|
|
note.put(NoteColumns.TYPE, mType);
|
|
|
note.put(NoteColumns.WIDGET_ID, mWidgetId);
|
|
|
note.put(NoteColumns.WIDGET_TYPE, mWidgetType);
|
|
|
note.put(NoteColumns.ORIGIN_PARENT_ID, mOriginParent);
|
|
|
js.put(GTaskStringUtils.META_HEAD_NOTE, note);
|
|
|
|
|
|
JSONArray dataArray = new JSONArray();
|
|
|
for (SqlData sqlData : mDataList) {
|
|
|
JSONObject data = sqlData.getContent();
|
|
|
if (data != null) {
|
|
|
dataArray.put(data);
|
|
|
}
|
|
|
}
|
|
|
js.put(GTaskStringUtils.META_HEAD_DATA, dataArray);
|
|
|
} else if (mType == Notes.TYPE_FOLDER || mType == Notes.TYPE_SYSTEM) {
|
|
|
// 如果是文件夹或系统笔记类型，构建包含ID、类型和摘要的JSONObject
|
|
|
note.put(NoteColumns.ID, mId);
|
|
|
note.put(NoteColumns.TYPE, mType);
|
|
|
note.put(NoteColumns.SNIPPET, mSnippet);
|
|
|
js.put(GTaskStringUtils.META_HEAD_NOTE, note);
|
|
|
}
|
|
|
|
|
|
return js;
|
|
|
} catch (JSONException e) {
|
|
|
Log.e(TAG, e.toString());
|
|
|
e.printStackTrace();
|
|
|
}
|
|
|
return null;
|
|
|
}
|
|
|
|
|
|
// 设置笔记的父ID
|
|
|
public void setParentId(long id) {
|
|
|
mParentId = id;
|
|
|
mDiffNoteValues.put(NoteColumns.PARENT_ID, id);
|
|
|
}
|
|
|
|
|
|
// 设置笔记的GTask ID
|
|
|
public void setGtaskId(String gid) {
|
|
|
mDiffNoteValues.put(NoteColumns.GTASK_ID, gid);
|
|
|
}
|
|
|
|
|
|
// 设置笔记的同步ID
|
|
|
public void setSyncId(long syncId) {
|
|
|
mDiffNoteValues.put(NoteColumns.SYNC_ID, syncId);
|
|
|
}
|
|
|
|
|
|
// 重置本地修改标记
|
|
|
public void resetLocalModified() {
|
|
|
mDiffNoteValues.put(NoteColumns.LOCAL_MODIFIED, 0);
|
|
|
}
|
|
|
|
|
|
// 获取笔记的ID
|
|
|
public long getId() {
|
|
|
return mId;
|
|
|
}
|
|
|
|
|
|
// 获取笔记的父ID
|
|
|
public long getParentId() {
|
|
|
return mParentId;
|
|
|
}
|
|
|
|
|
|
// 获取笔记的摘要
|
|
|
public String getSnippet() {
|
|
|
return mSnippet;
|
|
|
}
|
|
|
|
|
|
// 检查笔记是否为普通笔记类型
|
|
|
public boolean isNoteType() {
|
|
|
return mType == Notes.TYPE_NOTE;
|
|
|
}
|
|
|
|
|
|
// 提交笔记数据，包括创建和更新
|
|
|
public void commit(boolean validateVersion) {
|
|
|
if (mIsCreate) {
|
|
|
// 如果是创建笔记，插入数据到数据库并获取新创建的笔记ID
|
|
|
if (mId == INVALID_ID && mDiffNoteValues.containsKey(NoteColumns.ID)) {
|
|
|
mDiffNoteValues.remove(NoteColumns.ID);
|
|
|
}
|
|
|
|
|
|
Uri uri = mContentResolver.insert(Notes.CONTENT_NOTE_URI, mDiffNoteValues);
|
|
|
try {
|
|
|
mId = Long.valueOf(uri.getPathSegments().get(1));
|
|
|
} catch (NumberFormatException e) {
|
|
|
Log.e(TAG, "Get note id error :" + e.toString());
|
|
|
throw new ActionFailureException("create note failed");
|
|
|
}
|
|
|
if (mId == 0) {
|
|
|
throw new IllegalStateException("Create thread id failed");
|
|
|
}
|
|
|
|
|
|
if (mType == Notes.TYPE_NOTE) {
|
|
|
// 如果是普通笔记类型，提交关联的数据内容
|
|
|
for (SqlData sqlData : mDataList) {
|
|
|
sqlData.commit(mId, false, -1);
|
|
|
}
|
|
|
}
|
|
|
} else {
|
|
|
// 如果是更新笔记，检查ID是否有效
|
|
|
if (mId <= 0 && mId != Notes.ID_ROOT_FOLDER && mId != Notes.ID_CALL_RECORD_FOLDER) {
|
|
|
Log.e(TAG, "No such note");
|
|
|
throw new IllegalStateException("Try to update note with invalid id");
|
|
|
}
|
|
|
if (mDiffNoteValues.size() > 0) {
|
|
|
mVersion ++;
|
|
|
// 更新数据库中的笔记数据
|
|
|
int result = 0;
|
|
|
if (!validateVersion) {
|
|
|
result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
|
|
|
+ NoteColumns.ID + "=?)", new String[] {
|
|
|
String.valueOf(mId)
|
|
|
});
|
|
|
} else {
|
|
|
result = mContentResolver.update(Notes.CONTENT_NOTE_URI, mDiffNoteValues, "("
|
|
|
+ NoteColumns.ID + "=?) AND (" + NoteColumns.VERSION + "<=?)",
|
|
|
new String[] {
|
|
|
String.valueOf(mId), String.valueOf(mVersion)
|
|
|
});
|
|
|
}
|
|
|
if (result == 0) {
|
|
|
Log.w(TAG, "there is no update. maybe user updates note when syncing");
|
|
|
}
|
|
|
}
|
|
|
|
|
|
if (mType == Notes.TYPE_NOTE) {
|
|
|
// 如果是普通笔记类型，提交关联的数据内容
|
|
|
for (SqlData sqlData : mDataList) {
|
|
|
sqlData.commit(mId, validateVersion, mVersion);
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// 刷新本地信息
|
|
|
loadFromCursor(mId);
|
|
|
if (mType == Notes.TYPE_NOTE)
|
|
|
loadDataContent();
|
|
|
|
|
|
mDiffNoteValues.clear();
|
|
|
mIsCreate = false;
|
|
|
}
|
