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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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// SqlNote类用于处理与SQL数据库中笔记相关的数据操作，包括创建、读取、更新和提交笔记数据
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public class SqlNote {
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// 用于日志记录的标签，简化类名获取
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private static final String TAG = SqlNote.class.getSimpleName();
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// 表示无效的ID值
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private static final int INVALID_ID = -99999;
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// 定义查询笔记时的投影列数组，用于指定要查询的列
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public static final String[] PROJECTION_NOTE = new String[] {
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NoteColumns.ID, NoteColumns.ALERTED_DATE, NoteColumns.BG_COLOR_ID,
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NoteColumns.CREATED_DATE, NoteColumns.HAS_ATTACHMENT, NoteColumns.MODIFIED_DATE,
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NoteColumns.NOTES_COUNT, NoteColumns.PARENT_ID, NoteColumns.SNIPPET, NoteColumns.TYPE,
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NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE, NoteColumns.SYNC_ID,
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NoteColumns.LOCAL_MODIFIED, NoteColumns.ORIGIN_PARENT_ID, NoteColumns.GTASK_ID,
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NoteColumns.VERSION
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};
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// 定义ID列在投影列数组中的索引
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public static final int ID_COLUMN = 0;
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// 定义提醒日期列在投影列数组中的索引
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public static final int ALERTED_DATE_COLUMN = 1;
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// 定义背景颜色ID列在投影列数组中的索引
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public static final int BG_COLOR_ID_COLUMN = 2;
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// 定义创建日期列在投影列数组中的索引
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public static final int CREATED_DATE_COLUMN = 3;
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// 定义是否有附件列在投影列数组中的索引
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public static final int HAS_ATTACHMENT_COLUMN = 4;
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// 定义修改日期列在投影列数组中的索引
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public static final int MODIFIED_DATE_COLUMN = 5;
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// 定义笔记数量列在投影列数组中的索引（根据上下文可能有不同含义）
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public static final int NOTES_COUNT_COLUMN = 6;
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// 定义父ID列在投影列数组中的索引
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public static final int PARENT_ID_COLUMN = 7;
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// 定义片段列在投影列数组中的索引（可能是笔记的简短描述等）
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public static final int SNIPPET_COLUMN = 8;
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// 定义类型列在投影列数组中的索引（如笔记类型、文件夹类型等）
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public static final int TYPE_COLUMN = 9;
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// 定义小部件ID列在投影列数组中的索引
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public static final int WIDGET_ID_COLUMN = 10;
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// 定义小部件类型列在投影列数组中的索引
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public static final int WIDGET_TYPE_COLUMN = 11;
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// 定义同步ID列在投影列数组中的索引
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public static final int SYNC_ID_COLUMN = 12;
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// 定义本地修改列在投影列数组中的索引
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public static final int LOCAL_MODIFIED_COLUMN = 13;
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// 定义原始父ID列在投影列数组中的索引（根据上下文可能有不同用途）
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public static final int ORIGIN_PARENT_ID_COLUMN = 14;
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// 定义GTask ID列在投影列数组中的索引（可能与特定任务系统相关）
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public static final int GTASK_ID_COLUMN = 15;
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// 定义版本列在投影列数组中的索引
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public static final int VERSION_COLUMN = 16;
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// 应用程序上下文
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private Context mContext;
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// 用于与内容提供器进行交互，以访问和操作数据
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private ContentResolver mContentResolver;
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// 表示是否为创建操作
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private boolean mIsCreate;
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// 笔记的ID
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private long mId;
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// 笔记的提醒日期
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private long mAlertDate;
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// 笔记的背景颜色ID
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private int mBgColorId;
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// 笔记的创建日期
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private long mCreatedDate;
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// 表示笔记是否有附件
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private int mHasAttachment;
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// 笔记的修改日期
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private long mModifiedDate;
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// 笔记的父ID
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private long mParentId;
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// 笔记的片段（可能是简短描述等）
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private String mSnippet;
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// 笔记的类型
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private int mType;
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// 笔记关联的小部件ID
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private int mWidgetId;
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// 笔记关联的小部件类型
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private int mWidgetType;
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// 笔记的原始父ID（根据上下文可能有不同用途）
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private long mOriginParent;
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// 笔记的版本号
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private long mVersion;
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// 用于存储要更新的笔记数据值
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private ContentValues mDiffNoteValues;
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// 存储与笔记相关的数据列表（可能是笔记的内容数据等）
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private ArrayList<SqlData> mDataList;
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// 构造函数，用于创建一个新的SqlNote实例，通常用于插入新笔记
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public SqlNote(Context context) {
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mContext = context;
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mContentResolver = context.getContentResolver();
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mIsCreate = true;
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mId = INVALID_ID;
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mAlertDate = 0;
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// 获取默认的背景颜色ID
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mBgColorId = ResourceParser.getDefaultBgId(context);
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mCreatedDate = System.currentTimeMillis();
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mHasAttachment = 0;
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mModifiedDate = System.currentTimeMillis();
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mParentId = 0;
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mSnippet = "";
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mType = Notes.TYPE_NOTE;
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mWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
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mWidgetType = Notes.TYPE_WIDGET_INVALIDE;
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mOriginParent = 0;
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mVersion = 0;
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mDiffNoteValues = new ContentValues();
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mDataList = new ArrayList<SqlData>();
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}
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// 构造函数，用于根据数据库游标创建一个SqlNote实例，通常用于读取现有笔记
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public SqlNote(Context context, Cursor c) {
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mContext = context;
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mContentResolver = context.getContentResolver();
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mIsCreate = false;
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loadFromCursor(c);
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mDataList = new ArrayList<SqlData>();
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if (mType == Notes.TYPE_NOTE)
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loadDataContent();
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mDiffNoteValues = new ContentValues();
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}
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// 构造函数，根据指定的ID从数据库加载笔记数据创建SqlNote实例
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public SqlNote(Context context, long id) {
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mContext = context;
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mContentResolver = context.getContentResolver();
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mIsCreate = false;
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loadFromCursor(id);
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mDataList = new ArrayList<SqlData>();
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if (mType == Notes.TYPE_NOTE)
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loadDataContent();
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mDiffNoteValues = new ContentValues();
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}
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// 根据ID从数据库加载笔记数据到当前实例的属性中
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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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// 查询指定ID的笔记数据
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c = mContentResolver.query(Notes.CONTENT_NOTE_URI, PROJECTION_NOTE, "(_id=?)",
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new String[] { String.valueOf(id) }, null);
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if (c!= null) {
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c.moveToNext();
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loadFromCursor(c);
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} else {
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Log.w(TAG, "loadFromCursor: cursor = null");
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}
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} finally {
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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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// 从数据库游标加载笔记数据到当前实例的属性中
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private void loadFromCursor(Cursor c) {
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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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// 加载与笔记相关的数据内容（如果笔记类型为普通笔记）
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private void loadDataContent() {
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Cursor c = null;
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mDataList.clear();
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try {
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// 查询与当前笔记ID相关的数据
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c = mContentResolver.query(Notes.CONTENT_DATA_URI, SqlData.PROJECTION_DATA,
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"(note_id=?)", new String[] { String.valueOf(mId) }, null);
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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");
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return;
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}
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while (c.moveToNext()) {
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// 根据游标创建SqlData实例并添加到数据列表中
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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");
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}
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} finally {
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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，根据JSON对象中的数据更新本地笔记数据，并记录数据差异
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public boolean setContent(JSONObject js) {
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try {
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// 从JSON对象中获取笔记的元数据部分
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JSONObject note = js.getJSONObject(GTaskStringUtils.META_HEAD_NOTE);
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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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// 对于文件夹类型，只能更新片段和类型
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String snippet = note.has(NoteColumns.SNIPPET)? note.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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int type = note.has(NoteColumns.TYPE)? note.getInt(NoteColumns.TYPE) : 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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// 对于普通笔记类型，更新各种属性和相关数据
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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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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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long alertDate = note.has(NoteColumns.ALERTED_DATE)? note.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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int bgColorId = note.has(NoteColumns.BG_COLOR_ID)? note.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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long createDate = note.has(NoteColumns.CREATED_DATE)? note.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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int hasAttachment = note.has(NoteColumns.HAS_ATTACHMENT)? note.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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long modifiedDate = note.has(NoteColumns.MODIFIED_DATE)? note.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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long parentId = note.has(NoteColumns.PARENT_ID)? note.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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String snippet = note.has(NoteColumns.SNIPPET)? note.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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int type = note.has(NoteColumns.TYPE)? note.getInt(NoteColumns.TYPE) : 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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int widgetId = note.has(NoteColumns.WIDGET_ID)? note.getInt(NoteColumns.WIDGET_ID) : AppWidgetManager.INVALID_APPWIDGET_ID;
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if (mIsCreate || mWidgetId!= widgetId) {
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mDiffNoteValues.put(NoteColumns.WIDGET_ID, widgetId);
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}
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mWidgetId = widgetId;
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int widgetType = note.has(NoteColumns.WIDGET_TYPE)? note.getInt(NoteColumns.WIDGET_TYPE) : Notes.TYPE_WIDGET_INVALIDE;
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if (mIsCreate || mWidgetType!= widgetType) {
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mDiffNoteValues.put(NoteColumns.WIDGET_TYPE, widgetType);
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}
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mWidgetType = widgetType;
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long originParent = note.has(NoteColumns.ORIGIN_PARENT_ID)? note.getLong(NoteColumns.ORIGIN_PARENT_ID) : 0;
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if (mIsCreate || mOriginParent!= originParent) {
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mDiffNoteValues.put(NoteColumns.ORIGIN_PARENT_ID, originParent);
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}
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mOriginParent = originParent;
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for (int i = 0; i < dataArray.length(); i++) {
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JSONObject data = dataArray.getJSONObject(i);
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SqlData sqlData = null;
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if (data.has(DataColumns.ID)) {
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long dataId = data.getLong(DataColumns.ID);
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for (SqlData temp : mDataList) {
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if (dataId == temp.getId()) {
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sqlData = temp;
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}
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}
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}
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if (sqlData == null) {
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sqlData = new SqlData(mContext);
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mDataList.add(sqlData);
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}
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sqlData.setContent(data);
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}
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}
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} catch (JSONException e) {
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Log.e(TAG, e.toString());
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e.printStackTrace();
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return false;
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}
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return true;
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}
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// 获取笔记内容，以JSON对象形式返回，如果是创建操作则返回null并记录错误日志
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public JSONObject getContent() {
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try {
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JSONObject js = new JSONObject();
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if (mIsCreate) {
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Log.e(TAG, "it seems that we haven't created this in database yet");
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return null;
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}
|
|
|
JSONObject note = new JSONObject();
|
|
|
if (mType == Notes.TYPE_NOTE |
