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@ -1,362 +1,287 @@
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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.data; // 包声明
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package net.micode.notes.data;
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import android.content.ContentValues;
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import android.content.Context;
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import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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import android.util.Log;
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import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.DataConstants;
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import net.micode.notes.data.Notes.NoteColumns;
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import android.content.ContentValues; // 导入ContentValues类
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import android.content.Context; // 导入Context类
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import android.database.sqlite.SQLiteDatabase; // 导入SQLiteDatabase类
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import android.database.sqlite.SQLiteOpenHelper; // 导入SQLiteOpenHelper类
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import android.util.Log; // 导入Log类
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import net.micode.notes.data.Notes.DataColumns; // 导入DataColumns类
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import net.micode.notes.data.Notes.DataConstants; // 导入DataConstants类
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import net.micode.notes.data.Notes.NoteColumns; // 导入NoteColumns类
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// Notes数据库帮助类
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public class NotesDatabaseHelper extends SQLiteOpenHelper {
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private static final String DB_NAME = "note.db";
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private static final int DB_VERSION = 4;
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private static final String DB_NAME = "note.db"; // 定义数据库名称
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private static final int DB_VERSION = 4; // 定义数据库版本号
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// 表名接口
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public interface TABLE {
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public static final String NOTE = "note";
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public static final String DATA = "data";
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public static final String NOTE = "note"; // 笔记表名
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public static final String DATA = "data"; // 数据表名
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}
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private static final String TAG = "NotesDatabaseHelper";
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private static final String TAG = "NotesDatabaseHelper"; // 用于日志输出的TAG
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private static NotesDatabaseHelper mInstance;
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private static NotesDatabaseHelper mInstance; // 定义数据库帮助类的实例
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// 创建笔记表的SQL语句
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private static final String CREATE_NOTE_TABLE_SQL =
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"CREATE TABLE " + TABLE.NOTE + "(" +
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NoteColumns.ID + " INTEGER PRIMARY KEY," +
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NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," +
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NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +
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NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
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NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
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")";
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private static final String CREATE_DATA_TABLE_SQL =
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"CREATE TABLE " + TABLE.DATA + "(" +
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DataColumns.ID + " INTEGER PRIMARY KEY," +
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DataColumns.MIME_TYPE + " TEXT NOT NULL," +
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DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," +
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DataColumns.DATA1 + " INTEGER," +
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DataColumns.DATA2 + " INTEGER," +
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DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
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DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
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DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
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")";
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private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
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"CREATE INDEX IF NOT EXISTS note_id_index ON " +
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TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";
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/**
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* Increase folder's note count when move note to the folder
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*/
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private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
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"CREATE TRIGGER increase_folder_count_on_update "+
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" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
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" BEGIN " +
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" UPDATE " + TABLE.NOTE +
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
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" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
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" END";
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/**
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* Decrease folder's note count when move note from folder
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*/
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private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
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"CREATE TRIGGER decrease_folder_count_on_update " +
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" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
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" BEGIN " +
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" UPDATE " + TABLE.NOTE +
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
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" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
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" AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
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" END";
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/**
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* Increase folder's note count when insert new note to the folder
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*/
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private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =
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"CREATE TRIGGER increase_folder_count_on_insert " +
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" AFTER INSERT ON " + TABLE.NOTE +
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" BEGIN " +
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" UPDATE " + TABLE.NOTE +
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
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" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
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" END";
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/**
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* Decrease folder's note count when delete note from the folder
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*/
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private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =
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"CREATE TRIGGER decrease_folder_count_on_delete " +
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" AFTER DELETE ON " + TABLE.NOTE +
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" BEGIN " +
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" UPDATE " + TABLE.NOTE +
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
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" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
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" AND " + NoteColumns.NOTES_COUNT + ">0;" +
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" END";
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/**
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* Update note's content when insert data with type {@link DataConstants#NOTE}
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*/
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private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
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"CREATE TRIGGER update_note_content_on_insert " +
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" AFTER INSERT ON " + TABLE.DATA +
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" WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
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" BEGIN" +
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" UPDATE " + TABLE.NOTE +
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" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
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" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
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" END";
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/**
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* Update note's content when data with {@link DataConstants#NOTE} type has changed
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*/
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private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
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"CREATE TRIGGER update_note_content_on_update " +
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" AFTER UPDATE ON " + TABLE.DATA +
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" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
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" BEGIN" +
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" UPDATE " + TABLE.NOTE +
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" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
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" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
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" END";
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/**
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* Update note's content when data with {@link DataConstants#NOTE} type has deleted
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*/
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private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
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"CREATE TRIGGER update_note_content_on_delete " +
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" AFTER delete ON " + TABLE.DATA +
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" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
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" BEGIN" +
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" UPDATE " + TABLE.NOTE +
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" SET " + NoteColumns.SNIPPET + "=''" +
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" WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
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" END";
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/**
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* Delete datas belong to note which has been deleted
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*/
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private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
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"CREATE TRIGGER delete_data_on_delete " +
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" AFTER DELETE ON " + TABLE.NOTE +
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" BEGIN" +
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" DELETE FROM " + TABLE.DATA +
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" WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +
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" END";
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/**
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* Delete notes belong to folder which has been deleted
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*/
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private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
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"CREATE TRIGGER folder_delete_notes_on_delete " +
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" AFTER DELETE ON " + TABLE.NOTE +
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" BEGIN" +
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" DELETE FROM " + TABLE.NOTE +
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" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
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" END";
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/**
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* Move notes belong to folder which has been moved to trash folder
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*/
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private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
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"CREATE TRIGGER folder_move_notes_on_trash " +
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" AFTER UPDATE ON " + TABLE.NOTE +
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" WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
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" BEGIN" +
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" UPDATE " + TABLE.NOTE +
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" SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
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" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
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" END";
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"CREATE TABLE " + TABLE.NOTE + "(" + // 创建笔记表
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NoteColumns.ID + " INTEGER PRIMARY KEY," + // 笔记ID，主键
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NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + // 父级笔记ID，默认为0
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NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," + // 提醒日期，默认为0
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NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," + // 背景色ID，默认为0
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 创建日期，默认为当前时间戳
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NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," + // 是否有附件，默认为0
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NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 修改日期，默认为当前时间戳
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NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," + // 笔记数量，默认为0
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NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," + // 笔记摘要，默认为空字符串
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NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," + // 笔记类型，默认为0
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NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," + // 小部件ID，默认为0
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NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," + // 小部件类型，默认为-1
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NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," + // 同步ID，默认为0
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NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," + // 本地修改标志，默认为0
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NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," + // 原父级ID，默认为0
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NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," + // GTASK ID，默认为空字符串
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NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" + // 笔记版本号，默认为0
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")"; // 结束创建表的SQL语句
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// 创建触发器SQL
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// 创建数据表的SQL语句
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private static final String CREATE_DATA_TABLE_SQL =// 创建触发器SQL
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"CREATE TABLE " + TABLE.DATA + "(" + // 创建数据表
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DataColumns.ID + " INTEGER PRIMARY KEY," + // 数据ID，主键
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DataColumns.MIME_TYPE + " TEXT NOT NULL," + // MIME类型
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DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," + // 笔记ID，默认为0
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 创建日期，默认为当前时间戳
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NoteColumns.MODIFIED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," + // 修改日期，默认为当前时间戳
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DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," + // 内容，默认为空字符串
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DataColumns.DATA1 + " INTEGER," + // 数据字段1
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DataColumns.DATA2 + " INTEGER," + // 数据字段2
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DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," + // 数据字段3，默认为空字符串
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DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," + // 数据字段4，默认为空字符串
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DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" + // 数据字段5，默认为空字符串
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")"; // 结束创建数据表的SQL语句// 创建触发器SQL
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// 创建触发器SQL
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// 创建数据表的NOTE_ID索引// 创建触发器SQL
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private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =// 创建触发器SQL
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"CREATE INDEX IF NOT EXISTS note_id_index ON " +// 创建触发器SQL
|
|
|
|
|
TABLE.DATA + "(" + DataColumns.NOTE_ID + ");"; // 创建数据表的NOTE_ID索引
|
|
|
|
|
// 创建触发器SQL
|
|
|
|
|
// 创建触发器：更新笔记的父级ID时增加父文件夹的笔记数// 创建触发器SQL
|
|
|
|
|
private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER increase_folder_count_on_update " +// 创建触发器SQL
|
|
|
|
|
" AFTER UPDATE OF " + eColumns.PARENT_ID + " ON " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" BEGIN " +// 创建触发器SQL
|
|
|
|
|
" UPDATE " + TABLE.NOTE +// 创建触发器SQL// 创建触发器SQL// 创建触发器SQL
|
|
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +// 创建触发器SQL// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
// 创建触发器SQL
|
|
|
|
|
// 创建触发器：更新笔记的父级ID时减少父文件夹的笔记数
|
|
|
|
|
private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER decrease_folder_count_on_update " +// 创建触发器SQL
|
|
|
|
|
" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" BEGIN " +// 创建触发器SQL// 创建触发器SQL
|
|
|
|
|
" UPDATE " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +// 创建触发器SQL
|
|
|
|
|
" AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 创建触发器：插入笔记时增加父文件夹的笔记数
|
|
|
|
|
private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER increase_folder_count_on_insert " +// 创建触发器SQL
|
|
|
|
|
" AFTER INSERT ON " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" BEGIN " +// 创建触发器SQL
|
|
|
|
|
" UPDATE " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 创建触发器：删除笔记时减少父文件夹的笔记数
|
|
|
|
|
private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER decrease_folder_count_on_delete " +// 创建触发器SQL
|
|
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" BEGIN " +// 创建触发器SQL
|
|
|
|
|
" UPDATE " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +// 创建触发器SQL
|
|
|
|
|
" AND " + NoteColumns.NOTES_COUNT + ">0;" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 创建触发器：插入数据时更新笔记的摘要
|
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER update_note_content_on_insert " +// 创建触发器SQL
|
|
|
|
|
" AFTER INSERT ON " + TABLE.DATA +// 创建触发器SQL
|
|
|
|
|
" WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +// 创建触发器SQL
|
|
|
|
|
" BEGIN" +// 创建触发器SQL
|
|
|
|
|
" UPDATE " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 创建触发器：更新数据时更新笔记的摘要
|
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER update_note_content_on_update " +// 创建触发器SQL// 创建触发器SQL
|
|
|
|
|
" AFTER UPDATE ON " + TABLE.DATA +
|
|
|
|
|
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +// 创建触发器SQL
|
|
|
|
|
" BEGIN" +// 创建触发器SQL
|
|
|
|
|
" UPDATE " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 创建触发器：删除数据时更新笔记的摘要
|
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER update_note_content_on_delete " +// 创建触发器SQL
|
|
|
|
|
" AFTER delete ON " + TABLE.DATA +// 创建触发器SQL
|
|
|
|
|
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +// 创建触发器SQL
|
|
|
|
|
" BEGIN" +
|
|
|
|
|
" UPDATE " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=''" +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 创建触发器：删除笔记时删除相关的数据
|
|
|
|
|
private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER delete_data_on_delete " +// 创建触发器SQL
|
|
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" BEGIN" +// 创建触发器SQL
|
|
|
|
|
" DELETE FROM " + TABLE.DATA +// 创建触发器SQL
|
|
|
|
|
" WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 创建触发器：删除文件夹时删除该文件夹中的所有笔记
|
|
|
|
|
private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER folder_delete_notes_on_delete " +// 创建触发器SQL
|
|
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" BEGIN" +// 创建触发器SQL
|
|
|
|
|
" DELETE FROM " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 创建触发器：移动文件夹到回收站时移动所有笔记到回收站
|
|
|
|
|
private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =// 创建触发器SQL
|
|
|
|
|
"CREATE TRIGGER folder_move_notes_on_trash " +// 创建触发器SQL
|
|
|
|
|
" AFTER UPDATE ON " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +// 创建触发器SQL
|
|
|
|
|
" BEGIN" +// 创建触发器SQL
|
|
|
|
|
" UPDATE " + TABLE.NOTE +// 创建触发器SQL
|
|
|
|
|
" SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +// 创建触发器SQL
|
|
|
|
|
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +// 创建触发器SQL
|
|
|
|
|
" END"; // 创建触发器SQL
|
|
|
|
|
|
|
|
|
|
// 构造函数，初始化数据库帮助类
|
|
|
|
|
public NotesDatabaseHelper(Context context) {
|
|
|
|
|
super(context, DB_NAME, null, DB_VERSION);
|
|
|
|
|
super(context, DB_NAME, null, DB_VERSION); // 调用父类的构造函数，指定数据库名称和版本
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// 创建笔记表
|
|
|
|
|
public void createNoteTable(SQLiteDatabase db) {
|
|
|
|
|
db.execSQL(CREATE_NOTE_TABLE_SQL);
|
|
|
|
|
reCreateNoteTableTriggers(db);
|
|
|
|
|
createSystemFolder(db);
|
|
|
|
|
Log.d(TAG, "note table has been created");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private void reCreateNoteTableTriggers(SQLiteDatabase db) {
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash");
|
|
|
|
|
|
|
|
|
|
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
|
|
|
|
|
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
|
|
|
|
|
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER);
|
|
|
|
|
db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER);
|
|
|
|
|
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER);
|
|
|
|
|
db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER);
|
|
|
|
|
db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private void createSystemFolder(SQLiteDatabase db) {
|
|
|
|
|
ContentValues values = new ContentValues();
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* call record foler for call notes
|
|
|
|
|
*/
|
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
|
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* root folder which is default folder
|
|
|
|
|
*/
|
|
|
|
|
values.clear();
|
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
|
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* temporary folder which is used for moving note
|
|
|
|
|
*/
|
|
|
|
|
values.clear();
|
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
|
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* create trash folder
|
|
|
|
|
*/
|
|
|
|
|
values.clear();
|
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
|
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
db.execSQL(CREATE_NOTE_TABLE_SQL); // 执行创建笔记表的SQL语句
|
|
|
|
|
reCreateNoteTableTriggers(db); // 创建触发器
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// 创建数据表
|
|
|
|
|
public void createDataTable(SQLiteDatabase db) {
|
|
|
|
|
db.execSQL(CREATE_DATA_TABLE_SQL);
|
|
|
|
|
reCreateDataTableTriggers(db);
|
|
|
|
|
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
|
|
|
|
|
Log.d(TAG, "data table has been created");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
private void reCreateDataTableTriggers(SQLiteDatabase db) {
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete");
|
|
|
|
|
|
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
|
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
|
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static synchronized NotesDatabaseHelper getInstance(Context context) {
|
|
|
|
|
if (mInstance == null) {
|
|
|
|
|
mInstance = new NotesDatabaseHelper(context);
|
|
|
|
|
}
|
|
|
|
|
return mInstance;
|
|
|
|
|
db.execSQL(CREATE_DATA_TABLE_SQL); // 执行创建数据表的SQL语句
|
|
|
|
|
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL); // 创建数据表的索引
|
|
|
|
|
Log.d(TAG, "data table has been created"); // 打印日志
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// 执行数据库创建操作
|
|
|
|
|
@Override
|
|
|
|
|
public void onCreate(SQLiteDatabase db) {
|
|
|
|
|
createNoteTable(db);
|
|
|
|
|
createDataTable(db);
|
|
|
|
|
createNoteTable(db); // 创建笔记表
|
|
|
|
|
createDataTable(db); // 创建数据表
|
|
|
|
|
}
|
|
|
|
|
@Override
|
|
|
|
|
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
|
|
|
|
|
Log.d(TAG, "onUpgrade: " + oldVersion + " --> " + newVersion); // 打印日志
|
|
|
|
|
|
|
|
|
|
// 根据版本号升级数据库
|
|
|
|
|
if (oldVersion == 1) {
|
|
|
|
|
db.execSQL(CREATE_DATA_TABLE_SQL); // 创建数据表
|
|
|
|
|
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL); // 创建索引
|
|
|
|
|
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER); // 创建触发器
|
|
|
|
|
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER); // 创建触发器
|
|
|
|
|
}
|
|
|
|
|
if (oldVersion <= 3) {
|
|
|
|
|
createNoteTable(db); // 创建笔记表
|
|
|
|
|
reCreateNoteTableTriggers(db); // 创建触发器
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
// 执行数据库升级操作
|
|
|
|
|
@Override
|
|
|
|
|
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
|
|
|
|
|
boolean reCreateTriggers = false;
|
|
|
|
|
boolean skipV2 = false;
|
|
|
|
|
boolean reCreateTriggers = false; // 是否需要重新创建触发器的标志
|
|
|
|
|
boolean skipV2 = false; // 是否跳过V2升级的标志
|
|
|
|
|
|
|
|
|
|
// 如果当前数据库版本是1，进行从V1升级到V2的操作
|
|
|
|
|
if (oldVersion == 1) {
|
|
|
|
|
upgradeToV2(db);
|
|
|
|
|
skipV2 = true; // this upgrade including the upgrade from v2 to v3
|
|
|
|
|
oldVersion++;
|
|
|
|
|
upgradeToV2(db); // 执行V1到V2的升级
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|
skipV2 = true; // 跳过V2到V3的升级
|
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|
oldVersion++; // 更新数据库版本为2
|
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|
}
|
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|
|
// 如果当前数据库版本是2且没有跳过V2升级
|
|
|
|
|
if (oldVersion == 2 && !skipV2) {
|
|
|
|
|
upgradeToV3(db);
|
|
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|
|
reCreateTriggers = true;
|
|
|
|
|
oldVersion++;
|
|
|
|
|
upgradeToV3(db); // 执行V2到V3的升级
|
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|
|
reCreateTriggers = true; // 标记需要重新创建触发器
|
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|
|
oldVersion++; // 更新数据库版本为3
|
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|
|
}
|
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|
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|
|
// 如果当前数据库版本是3，执行V3到V4的升级
|
|
|
|
|
if (oldVersion == 3) {
|
|
|
|
|
upgradeToV4(db);
|
|
|
|
|
oldVersion++;
|
|
|
|
|
}
|
|
|
|
|
upgradeToV4(db); // 执行V3到V4的升级
|
|
|
|
|
oldVersion++; // 更新数据库版本为4
|
|
|
|
|
}// 添加VERSION列，默认为0
|
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|
|
|
|
|
|
|
|
// 如果需要重新创建触发器，执行重新创建触发器的操作
|
|
|
|
|
if (reCreateTriggers) {
|
|
|
|
|
reCreateNoteTableTriggers(db);
|
|
|
|
|
reCreateDataTableTriggers(db);
|
|
|
|
|
reCreateNoteTableTriggers(db); // 重新创建笔记表的触发器
|
|
|
|
|
reCreateDataTableTriggers(db); // 重新创建数据表的触发器
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// 如果升级后的版本不等于目标版本，抛出异常
|
|
|
|
|
if (oldVersion != newVersion) {
|
|
|
|
|
throw new IllegalStateException("Upgrade notes database to version " + newVersion
|
|
|
|
|
+ "fails");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
throw new IllegalStateException("Upgrade notes database to version " + newVersion// 添加VERSION列，默认为0
|
|
|
|
|
+ " fails"); // 升级失败抛出异常
|
|
|
|
|
}// 添加VERSION列，默认为0
|
|
|
|
|
}// 添加VERSION列，默认为0
|
|
|
|
|
// 添加VERSION列，默认为0
|
|
|
|
|
// 从V1升级到V2
|
|
|
|
|
private void upgradeToV2(SQLiteDatabase db) {
|
|
|
|
|
db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
|
|
|
|
|
db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA);
|
|
|
|
|
createNoteTable(db);
|
|
|
|
|
createDataTable(db);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE); // 删除笔记表（如果存在）
|
|
|
|
|
db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA); // 删除数据表（如果存在）
|
|
|
|
|
createNoteTable(db); // 重新创建笔记表
|
|
|
|
|
createDataTable(db); // 重新创建数据表
|
|
|
|
|
}// 添加VERSION列，默认为0
|
|
|
|
|
// 添加VERSION列，默认为0
|
|
|
|
|
// 从V2升级到V3
|
|
|
|
|
private void upgradeToV3(SQLiteDatabase db) {
|
|
|
|
|
// drop unused triggers
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_insert");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_delete");
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update");
|
|
|
|
|
// add a column for gtask id
|
|
|
|
|
// 删除不再使用的触发器
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_insert"); // 删除插入时更新时间触发器
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_delete"); // 删除删除时更新时间触发器
|
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update"); // 删除更新时更新时间触发器
|
|
|
|
|
// 在笔记表中添加一个新的列，用于存储gtask ID
|
|
|
|
|
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID
|
|
|
|
|
+ " TEXT NOT NULL DEFAULT ''");
|
|
|
|
|
// add a trash system folder
|
|
|
|
|
ContentValues values = new ContentValues();
|
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
|
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
+ " TEXT NOT NULL DEFAULT ''"); // 添加GTASK_ID列，默认为空字符串
|
|
|
|
|
// 在笔记表中添加一个垃圾系统文件夹
|
|
|
|
|
ContentValues values = new ContentValues(); // 创建一个ContentValues对象
|
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER); // 设置垃圾文件夹ID
|
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM); // 设置文件夹类型为系统文件夹
|
|
|
|
|
db.insert(TABLE.NOTE, null, values); // 插入新的垃圾文件夹记录
|
|
|
|
|
}// 添加VERSION列，默认为0
|
|
|
|
|
// 添加VERSION列，默认为0
|
|
|
|
|
// 从V3升级到V4
|
|
|
|
|
private void upgradeToV4(SQLiteDatabase db) {
|
|
|
|
|
// 在笔记表中添加一个新的列，用于存储版本号
|
|
|
|
|
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
|
|
|
|
|
+ " INTEGER NOT NULL DEFAULT 0");
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
+ " INTEGER NOT NULL DEFAULT 0"); // 添加VERSION列，默认为0
|
|
|
|
|
}// 添加VERSION列，默认为0
|
|
|
|
|
// 添加VERSION列，默认为0
|
|
|
|
|
// 添加VERSION列，默认为0
|
|
|
|
|
}// 添加VERSION列，默认为0
|
|
|
|
|
// 添加VERSION列，默认为0
|
