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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;
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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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/**
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* Database helper class for managing the notes database creation and version management.
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* This class handles:
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* - Database creation (tables, indexes, triggers)
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* - Database version upgrades
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* - System folder initialization
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*/
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public class NotesDatabaseHelper extends SQLiteOpenHelper {
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// Database name and version constants
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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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// Interface defining table names
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public interface TABLE {
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public static final String NOTE = "note"; // Table for notes and folders
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public static final String DATA = "data"; // Table for note content and metadata
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}
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private static final String TAG = "NotesDatabaseHelper"; // Log tag
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private static NotesDatabaseHelper mInstance; // Singleton instance
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// SQL statement to create the note table
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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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// SQL statement to create the data table
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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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// SQL statement to create index on note_id in data table
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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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* Trigger to increase folder's note count when moving a 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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* Trigger to decrease folder's note count when moving a 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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* Trigger to increase folder's note count when inserting a 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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* Trigger to decrease folder's note count when deleting a 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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* Trigger to update note's content when inserting 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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* Trigger to update note's content when data with {@link DataConstants#NOTE} type is updated
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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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* Trigger to clear note's content when data with {@link DataConstants#NOTE} type is 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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* Trigger to delete data items when their associated note is 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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* Trigger to delete notes when their parent folder is 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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* Trigger to move notes to trash when their parent folder is moved to trash
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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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/**
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* Private constructor to enforce singleton pattern
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*/
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private NotesDatabaseHelper(Context context) {
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super(context, DB_NAME, null, DB_VERSION);
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}
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/**
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* Creates the note table and associated triggers
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*/
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public void createNoteTable(SQLiteDatabase db) {
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db.execSQL(CREATE_NOTE_TABLE_SQL);
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reCreateNoteTableTriggers(db);
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createSystemFolder(db);
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Log.d(TAG, "note table has been created");
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}
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/**
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* Recreates all triggers associated with the note table
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*/
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private void reCreateNoteTableTriggers(SQLiteDatabase db) {
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// Drop existing triggers if they exist
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db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
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db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update");
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db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete");
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db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete");
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db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert");
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db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete");
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db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash");
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// Create new triggers
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db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
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db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
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db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER);
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db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER);
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db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER);
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db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER);
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db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
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}
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/**
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* Creates the system folders (root, call records, temp, trash)
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*/
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private void createSystemFolder(SQLiteDatabase db) {
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ContentValues values = new ContentValues();
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// Create call record folder
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values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
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values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
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db.insert(TABLE.NOTE, null, values);
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// Create root folder
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values.clear();
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values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
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values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
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db.insert(TABLE.NOTE, null, values);
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// Create temporary folder (used for moving notes)
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values.clear();
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values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
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values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
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db.insert(TABLE.NOTE, null, values);
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// Create trash folder
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values.clear();
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values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
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values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
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db.insert(TABLE.NOTE, null, values);
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}
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/**
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* Creates the data table and associated triggers
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*/
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public void createDataTable(SQLiteDatabase db) {
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db.execSQL(CREATE_DATA_TABLE_SQL);
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reCreateDataTableTriggers(db);
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db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
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Log.d(TAG, "data table has been created");
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}
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/**
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* Recreates all triggers associated with the data table
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*/
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private void reCreateDataTableTriggers(SQLiteDatabase db) {
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// Drop existing triggers if they exist
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db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert");
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db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update");
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db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete");
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// Create new triggers
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db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
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db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
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db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
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}
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/**
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* Gets the singleton instance of the database helper
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*/
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static synchronized NotesDatabaseHelper getInstance(Context context) {
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if (mInstance == null) {
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mInstance = new NotesDatabaseHelper(context);
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}
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return mInstance;
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}
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@Override
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public void onCreate(SQLiteDatabase db) {
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// Create both tables when database is first created
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createNoteTable(db);
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createDataTable(db);
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}
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@Override
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public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
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boolean reCreateTriggers = false;
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boolean skipV2 = false;
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// Upgrade path from version 1 to version 2
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if (oldVersion == 1) {
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upgradeToV2(db);
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skipV2 = true; // this upgrade includes the upgrade from v2 to v3
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oldVersion++;
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}
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// Upgrade path from version 2 to version 3
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if (oldVersion == 2 && !skipV2) {
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upgradeToV3(db);
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reCreateTriggers = true;
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oldVersion++;
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}
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// Upgrade path from version 3 to version 4
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if (oldVersion == 3) {
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upgradeToV4(db);
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oldVersion++;
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}
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// Recreate triggers if needed
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if (reCreateTriggers) {
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reCreateNoteTableTriggers(db);
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reCreateDataTableTriggers(db);
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}
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// Verify we've reached the target version
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if (oldVersion != newVersion) {
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throw new IllegalStateException("Upgrade notes database to version " + newVersion
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+ "fails");
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}
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}
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/**
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* Upgrade database from version 1 to version 2
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* Drops and recreates all tables
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*/
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private void upgradeToV2(SQLiteDatabase db) {
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db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
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db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA);
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createNoteTable(db);
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createDataTable(db);
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}
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/**
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* Upgrade database from version 2 to version 3
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* - Drops unused triggers
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* - Adds GTASK_ID column
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* - Adds trash folder
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*/
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private void upgradeToV3(SQLiteDatabase db) {
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// Drop unused triggers
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db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_insert");
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db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_delete");
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db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update");
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// Add column for Google Task ID
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db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID
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+ " TEXT NOT NULL DEFAULT ''");
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// Add trash system folder
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ContentValues values = new ContentValues();
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values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
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values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
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db.insert(TABLE.NOTE, null, values);
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}
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/**
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* Upgrade database from version 3 to version 4
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||||
* Adds version column for note versioning
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||||
*/
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private void upgradeToV4(SQLiteDatabase db) {
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db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
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+ " INTEGER NOT NULL DEFAULT 0");
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}
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||||
}
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@ -0,0 +1,91 @@
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/*
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||||
* Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
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||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
package net.micode.notes.tool;
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||||
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||||
/**
|
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* Google Tasks同步相关的JSON字符串常量类
|
||||
* 定义了与Google Tasks API交互时使用的JSON字段名、文件夹名称和元数据标识
|
||||
*/
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||||
public class GTaskStringUtils {
|
||||
|
||||
// -------------- JSON请求/响应字段名常量 --------------
|
||||
|
||||
// 操作相关字段
|
||||
public final static String GTASK_JSON_ACTION_ID = "action_id"; // 操作ID
|
||||
public final static String GTASK_JSON_ACTION_LIST = "action_list"; // 操作列表
|
||||
public final static String GTASK_JSON_ACTION_TYPE = "action_type"; // 操作类型
|
||||
public final static String GTASK_JSON_ACTION_TYPE_CREATE = "create"; // 创建操作
|
||||
public final static String GTASK_JSON_ACTION_TYPE_GETALL = "get_all"; // 获取所有操作
|
||||
public final static String GTASK_JSON_ACTION_TYPE_MOVE = "move"; // 移动操作
|
||||
public final static String GTASK_JSON_ACTION_TYPE_UPDATE = "update"; // 更新操作
|
||||
|
||||
// 实体相关字段
|
||||
public final static String GTASK_JSON_CREATOR_ID = "creator_id"; // 创建者ID
|
||||
public final static String GTASK_JSON_CHILD_ENTITY = "child_entity"; // 子实体
|
||||
public final static String GTASK_JSON_ENTITY_DELTA = "entity_delta"; // 实体差异
|
||||
public final static String GTASK_JSON_ENTITY_TYPE = "entity_type"; // 实体类型
|
||||
|
||||
// 任务/列表属性字段
|
||||
public final static String GTASK_JSON_CLIENT_VERSION = "client_version"; // 客户端版本
|
||||
public final static String GTASK_JSON_COMPLETED = "completed"; // 完成状态
|
||||
public final static String GTASK_JSON_DELETED = "deleted"; // 删除状态
|
||||
public final static String GTASK_JSON_ID = "id"; // ID
|
||||
public final static String GTASK_JSON_INDEX = "index"; // 索引位置
|
||||
public final static String GTASK_JSON_LAST_MODIFIED = "last_modified"; // 最后修改时间
|
||||
public final static String GTASK_JSON_LATEST_SYNC_POINT = "latest_sync_point"; // 最新同步点
|
||||
public final static String GTASK_JSON_NAME = "name"; // 名称
|
||||
public final static String GTASK_JSON_NEW_ID = "new_id"; // 新ID
|
||||
public final static String GTASK_JSON_NOTES = "notes"; // 备注
|
||||
public final static String GTASK_JSON_PARENT_ID = "parent_id"; // 父ID
|
||||
public final static String GTASK_JSON_PRIOR_SIBLING_ID = "prior_sibling_id"; // 前一个兄弟节点ID
|
||||
|
||||
// 列表相关字段
|
||||
public final static String GTASK_JSON_CURRENT_LIST_ID = "current_list_id"; // 当前列表ID
|
||||
public final static String GTASK_JSON_DEFAULT_LIST_ID = "default_list_id"; // 默认列表ID
|
||||
public final static String GTASK_JSON_DEST_LIST = "dest_list"; // 目标列表
|
||||
public final static String GTASK_JSON_DEST_PARENT = "dest_parent"; // 目标父节点
|
||||
public final static String GTASK_JSON_DEST_PARENT_TYPE = "dest_parent_type"; // 目标父节点类型
|
||||
public final static String GTASK_JSON_LIST_ID = "list_id"; // 列表ID
|
||||
public final static String GTASK_JSON_LISTS = "lists"; // 列表集合
|
||||
public final static String GTASK_JSON_SOURCE_LIST = "source_list"; // 源列表
|
||||
|
||||
// 响应相关字段
|
||||
public final static String GTASK_JSON_RESULTS = "results"; // 结果
|
||||
public final static String GTASK_JSON_TASKS = "tasks"; // 任务集合
|
||||
public final static String GTASK_JSON_TYPE = "type"; // 类型
|
||||
public final static String GTASK_JSON_TYPE_GROUP = "GROUP"; // 组类型
|
||||
public final static String GTASK_JSON_TYPE_TASK = "TASK"; // 任务类型
|
||||
public final static String GTASK_JSON_USER = "user"; // 用户
|
||||
|
||||
// -------------- 特殊文件夹名称和元数据常量 --------------
|
||||
|
||||
// MIUI笔记专用文件夹前缀
|
||||
public final static String MIUI_FOLDER_PREFFIX = "[MIUI_Notes]";
|
||||
|
||||
// 默认文件夹名称
|
||||
public final static String FOLDER_DEFAULT = "Default";
|
||||
public final static String FOLDER_CALL_NOTE = "Call_Note"; // 通话记录文件夹
|
||||
public final static String FOLDER_META = "METADATA"; // 元数据文件夹
|
||||
|
||||
// 元数据头部标识
|
||||
public final static String META_HEAD_GTASK_ID = "meta_gid"; // Google Tasks ID元数据
|
||||
public final static String META_HEAD_NOTE = "meta_note"; // 笔记元数据
|
||||
public final static String META_HEAD_DATA = "meta_data"; // 数据元数据
|
||||
|
||||
// 元数据笔记名称（用于标记特殊笔记，禁止用户修改）
|
||||
public final static String META_NOTE_NAME = "[META INFO] DON'T UPDATE AND DELETE";
|
||||
}
|
||||
Loading…
Reference in new issue