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@ -14,6 +14,7 @@
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* limitations under the License.
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* limitations under the License.
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*/
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*/
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// 定义一个包，用于存放数据相关的类
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package net.micode.notes.data;
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package net.micode.notes.data;
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import android.content.ContentValues;
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import android.content.ContentValues;
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@ -22,340 +23,474 @@ import android.database.sqlite.SQLiteDatabase;
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import android.database.sqlite.SQLiteOpenHelper;
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import android.database.sqlite.SQLiteOpenHelper;
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import android.util.Log;
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import android.util.Log;
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// 导入Notes类中的DataColumns和DataConstants常量
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import net.micode.notes.data.Notes.DataColumns;
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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.DataConstants;
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// 导入Notes类中的NoteColumns常量
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.data.Notes.NoteColumns;
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public class NotesDatabaseHelper extends SQLiteOpenHelper {
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public class NotesDatabaseHelper extends SQLiteOpenHelper {
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// 数据库名称
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private static final String DB_NAME = "note.db";
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private static final String DB_NAME = "note.db";
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// 数据库版本号
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private static final int DB_VERSION = 4;
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private static final int DB_VERSION = 4;
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public interface TABLE {
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public interface TABLE {
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// 定义一个常量，表示note
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public static final String NOTE = "note";
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public static final String NOTE = "note";
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// 定义一个常量，表示data
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public static final String DATA = "data";
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public static final String DATA = "data";
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}
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}
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// 定义一个常量，用于标识数据库帮助类的标签
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private static final String TAG = "NotesDatabaseHelper";
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private static final String TAG = "NotesDatabaseHelper";
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// 定义一个静态变量，用于存储数据库帮助类的实例
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private static NotesDatabaseHelper mInstance;
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private static NotesDatabaseHelper mInstance;
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// 定义创建NOTE表的SQL语句
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private static final String CREATE_NOTE_TABLE_SQL =
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private static final String CREATE_NOTE_TABLE_SQL =
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"CREATE TABLE " + TABLE.NOTE + "(" +
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"CREATE TABLE " + TABLE.NOTE + "(" +
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// 定义ID列，类型为INTEGER，为主键
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NoteColumns.ID + " INTEGER PRIMARY KEY," +
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NoteColumns.ID + " INTEGER PRIMARY KEY," +
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// 定义PARENT_ID列，类型为INTEGER，默认值为0
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NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
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// 定义ALERTED_DATE列，类型为INTEGER，默认值为0
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NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.ALERTED_DATE + " INTEGER NOT NULL DEFAULT 0," +
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// 定义BG_COLOR_ID列，类型为INTEGER，默认值为0
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NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.BG_COLOR_ID + " INTEGER NOT NULL DEFAULT 0," +
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// 定义CREATED_DATE列，类型为INTEGER，默认值为当前时间戳
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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// 定义HAS_ATTACHMENT列，类型为INTEGER，默认值为0
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NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.HAS_ATTACHMENT + " INTEGER NOT NULL DEFAULT 0," +
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// 定义MODIFIED_DATE列，类型为INTEGER，默认值为当前时间戳
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NoteColumns.MODIFIED_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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// 定义NOTES_COUNT列，类型为INTEGER，默认值为0
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NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.NOTES_COUNT + " INTEGER NOT NULL DEFAULT 0," +
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// 定义SNIPPET列，类型为TEXT，默认值为空字符串
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NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," +
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NoteColumns.SNIPPET + " TEXT NOT NULL DEFAULT ''," +
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// 定义TYPE列，类型为INTEGER，默认值为0
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NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.TYPE + " INTEGER NOT NULL DEFAULT 0," +
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// 定义WIDGET_ID列，类型为INTEGER，默认值为0
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NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.WIDGET_ID + " INTEGER NOT NULL DEFAULT 0," +
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// 定义WIDGET_TYPE列，类型为INTEGER，默认值为-1
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NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +
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NoteColumns.WIDGET_TYPE + " INTEGER NOT NULL DEFAULT -1," +
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// 定义SYNC_ID列，类型为INTEGER，默认值为0
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NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.SYNC_ID + " INTEGER NOT NULL DEFAULT 0," +
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// 定义LOCAL_MODIFIED列，类型为INTEGER，默认值为0
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NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.LOCAL_MODIFIED + " INTEGER NOT NULL DEFAULT 0," +
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// 定义ORIGIN_PARENT_ID列，类型为INTEGER，默认值为0
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NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
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NoteColumns.ORIGIN_PARENT_ID + " INTEGER NOT NULL DEFAULT 0," +
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// 定义GTASK_ID列，类型为TEXT，默认值为空字符串
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NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
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NoteColumns.GTASK_ID + " TEXT NOT NULL DEFAULT ''," +
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// 定义VERSION列，类型为INTEGER，默认值为0
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NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
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NoteColumns.VERSION + " INTEGER NOT NULL DEFAULT 0" +
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")";
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")";
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// 定义创建数据表的SQL语句
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private static final String CREATE_DATA_TABLE_SQL =
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private static final String CREATE_DATA_TABLE_SQL =
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"CREATE TABLE " + TABLE.DATA + "(" +
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"CREATE TABLE " + TABLE.DATA + "(" +
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// 定义ID列，类型为INTEGER，为主键
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DataColumns.ID + " INTEGER PRIMARY KEY," +
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DataColumns.ID + " INTEGER PRIMARY KEY," +
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// 定义MIME_TYPE列，类型为TEXT，不能为空
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DataColumns.MIME_TYPE + " TEXT NOT NULL," +
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DataColumns.MIME_TYPE + " TEXT NOT NULL," +
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// 定义NOTE_ID列，类型为INTEGER，不能为空，默认值为0
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DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," +
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DataColumns.NOTE_ID + " INTEGER NOT NULL DEFAULT 0," +
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// 定义CREATED_DATE列，类型为INTEGER，不能为空，默认值为当前时间
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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NoteColumns.CREATED_DATE + " INTEGER NOT NULL DEFAULT (strftime('%s','now') * 1000)," +
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// 定义MODIFIED_DATE列，类型为INTEGER，不能为空，默认值为当前时间
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NoteColumns.MODIFIED_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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// 定义CONTENT列，类型为TEXT，不能为空，默认值为空字符串
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DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," +
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DataColumns.CONTENT + " TEXT NOT NULL DEFAULT ''," +
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// 定义DATA1列，类型为INTEGER
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DataColumns.DATA1 + " INTEGER," +
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DataColumns.DATA1 + " INTEGER," +
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// 定义DATA2列，类型为INTEGER
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DataColumns.DATA2 + " INTEGER," +
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DataColumns.DATA2 + " INTEGER," +
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// 定义DATA3列，类型为TEXT，不能为空，默认值为空字符串
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DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
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DataColumns.DATA3 + " TEXT NOT NULL DEFAULT ''," +
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// 定义DATA4列，类型为TEXT，不能为空，默认值为空字符串
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DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
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DataColumns.DATA4 + " TEXT NOT NULL DEFAULT ''," +
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// 定义DATA5列，类型为TEXT，不能为空，默认值为空字符串
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DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
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DataColumns.DATA5 + " TEXT NOT NULL DEFAULT ''" +
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")";
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")";
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// 定义一个常量，用于创建索引的SQL语句
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private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
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private static final String CREATE_DATA_NOTE_ID_INDEX_SQL =
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// 创建一个名为note_id_index的索引，如果不存在
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"CREATE INDEX IF NOT EXISTS note_id_index ON " +
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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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TABLE.DATA + "(" + DataColumns.NOTE_ID + ");";
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/**
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/**
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* Increase folder's note count when move note to the folder
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* Increase folder's note count when move note to the folder
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*/
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*/
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// 定义一个静态常量，用于创建一个触发器，在更新Note表的PARENT_ID字段后，增加对应文件夹的NOTES_COUNT字段
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private static final String NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
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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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"CREATE TRIGGER increase_folder_count_on_update "+ // 创建一个触发器，名称为increase_folder_count_on_update
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" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
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" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE + // 在Note表上，当PARENT_ID字段更新后
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" BEGIN " +
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" BEGIN " + // 开始
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" UPDATE " + TABLE.NOTE +
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" UPDATE " + TABLE.NOTE + // 更新NOTE表
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" + // 将NOTES_COUNT字段加1
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" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
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" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" + // 将ID字段与new.PARENT_ID字段相等
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" END";
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" END"; // 结束
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/**
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/**
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* Decrease folder's note count when move note from folder
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* Decrease folder's note count when move note from folder
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*/
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*/
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// 定义一个常量，用于表示在更新触发器中减少文件夹数量的操作
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private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
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private static final String NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER =
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// 创建一个触发器，在更新 NoteColumns.PARENT_ID 列后，减少 TABLE 表中的文件夹数量
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"CREATE TRIGGER decrease_folder_count_on_update " +
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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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" AFTER UPDATE OF " + NoteColumns.PARENT_ID + " ON " + TABLE.NOTE +
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" BEGIN " +
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" BEGIN " +
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" UPDATE " + TABLE.NOTE +
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" UPDATE " + TABLE.NOTE + // 更新NOTE表
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" + // 将NOTES_COUNT字段减1
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" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
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" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID + // 条件：ID等于old表中的PARENT_ID
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" AND " + NoteColumns.NOTES_COUNT + ">0" + ";" +
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" AND " + NoteColumns.NOTES_COUNT + ">0" + ";" + // 条件：NOTES_COUNT大于0
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" END";
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" END"; // 结束
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/**
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/**
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* Increase folder's note count when insert new note to the folder
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* Increase folder's note count when insert new note to the folder
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*/
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*/
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// 定义一个常量，用于在插入时增加文件夹计数器的触发器
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private static final String NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER =
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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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"CREATE TRIGGER increase_folder_count_on_insert " +
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" AFTER INSERT ON " + TABLE.NOTE +
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" AFTER INSERT ON " + TABLE.NOTE +
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" BEGIN " +
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" BEGIN " +
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" UPDATE " + TABLE.NOTE +
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" UPDATE " + TABLE.NOTE + // 更新NOTE表
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" +
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + " + 1" + // 将NOTES_COUNT字段加1
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" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" +
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" WHERE " + NoteColumns.ID + "=new." + NoteColumns.PARENT_ID + ";" + // 将ID字段与new.PARENT_ID字段相等
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" END";
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" END"; // 结束
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/**
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/**
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* Decrease folder's note count when delete note from the folder
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* Decrease folder's note count when delete note from the folder
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*/
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*/
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// 定义一个常量，用于在删除文件夹时减少文件夹计数器的触发器
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private static final String NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER =
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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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"CREATE TRIGGER decrease_folder_count_on_delete " +
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" AFTER DELETE ON " + TABLE.NOTE +
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" AFTER DELETE ON " + TABLE.NOTE +
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" BEGIN " +
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" BEGIN " +
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" UPDATE " + TABLE.NOTE +
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" UPDATE " + TABLE.NOTE + // 更新NOTE表
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" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" +
|
|
|
|
" SET " + NoteColumns.NOTES_COUNT + "=" + NoteColumns.NOTES_COUNT + "-1" + // 将NOTES_COUNT字段减1
|
|
|
|
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID +
|
|
|
|
" WHERE " + NoteColumns.ID + "=old." + NoteColumns.PARENT_ID + // 条件为ID等于old表中的PARENT_ID
|
|
|
|
" AND " + NoteColumns.NOTES_COUNT + ">0;" +
|
|
|
|
" AND " + NoteColumns.NOTES_COUNT + ">0;" + // 且NOTES_COUNT大于0
|
|
|
|
" END";
|
|
|
|
" END";
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* Update note's content when insert data with type {@link DataConstants#NOTE}
|
|
|
|
* Update note's content when insert data with type {@link DataConstants#NOTE}
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 定义一个常量，用于存储在插入数据时更新备注内容的触发器
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER =
|
|
|
|
"CREATE TRIGGER update_note_content_on_insert " +
|
|
|
|
"CREATE TRIGGER update_note_content_on_insert " +
|
|
|
|
" AFTER INSERT ON " + TABLE.DATA +
|
|
|
|
" AFTER INSERT ON " + TABLE.DATA +
|
|
|
|
" WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
|
" WHEN new." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
|
" BEGIN" +
|
|
|
|
" BEGIN" + // 开始事务
|
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
|
" UPDATE " + TABLE.NOTE + // 更新NOTE表
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT + // 将新内容的值赋给NOTE表的SNIPPET列
|
|
|
|
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
|
|
|
|
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" + // 根据新内容的NOTE_ID找到NOTE表中的ID，并更新SNIPPET列
|
|
|
|
" END";
|
|
|
|
" END"; // 结束事务
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* Update note's content when data with {@link DataConstants#NOTE} type has changed
|
|
|
|
* Update note's content when data with {@link DataConstants#NOTE} type has changed
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 定义一个常量，用于更新触发器时更新数据注释的内容
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER =
|
|
|
|
"CREATE TRIGGER update_note_content_on_update " +
|
|
|
|
"CREATE TRIGGER update_note_content_on_update " +
|
|
|
|
" AFTER UPDATE ON " + TABLE.DATA +
|
|
|
|
" AFTER UPDATE ON " + TABLE.DATA +
|
|
|
|
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
|
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
|
" BEGIN" +
|
|
|
|
" BEGIN" +
|
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
|
" UPDATE " + TABLE.NOTE + // 更新NOTE表
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT +
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=new." + DataColumns.CONTENT + // 将新内容的值赋给NOTE表的SNIPPET列
|
|
|
|
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" +
|
|
|
|
" WHERE " + NoteColumns.ID + "=new." + DataColumns.NOTE_ID + ";" + // 将NOTE表的ID列的值与新内容的NOTE_ID列的值进行比较
|
|
|
|
" END";
|
|
|
|
" END"; // 结束
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* Update note's content when data with {@link DataConstants#NOTE} type has deleted
|
|
|
|
* Update note's content when data with {@link DataConstants#NOTE} type has deleted
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 定义一个常量，用于存储删除触发器时更新数据注释的内容
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
|
|
|
|
private static final String DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER =
|
|
|
|
"CREATE TRIGGER update_note_content_on_delete " +
|
|
|
|
"CREATE TRIGGER update_note_content_on_delete " +
|
|
|
|
" AFTER delete ON " + TABLE.DATA +
|
|
|
|
" AFTER delete ON " + TABLE.DATA +
|
|
|
|
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
|
" WHEN old." + DataColumns.MIME_TYPE + "='" + DataConstants.NOTE + "'" +
|
|
|
|
" BEGIN" +
|
|
|
|
" BEGIN" + // 开始事务
|
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
|
" UPDATE " + TABLE.NOTE + // 更新NOTE表
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=''" +
|
|
|
|
" SET " + NoteColumns.SNIPPET + "=''" + // 将SNIPPET字段设置为空字符串
|
|
|
|
" WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" +
|
|
|
|
" WHERE " + NoteColumns.ID + "=old." + DataColumns.NOTE_ID + ";" + // 根据ID字段和old中的NOTE_ID字段进行更新
|
|
|
|
" END";
|
|
|
|
" END"; // 结束事务
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* Delete datas belong to note which has been deleted
|
|
|
|
* Delete datas belong to note which has been deleted
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 定义一个常量，用于删除触发器时删除数据
|
|
|
|
private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
|
|
|
|
private static final String NOTE_DELETE_DATA_ON_DELETE_TRIGGER =
|
|
|
|
"CREATE TRIGGER delete_data_on_delete " +
|
|
|
|
"CREATE TRIGGER delete_data_on_delete " + // 创建一个名为delete_data_on_delete的触发器
|
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +
|
|
|
|
" AFTER DELETE ON " + TABLE.NOTE + // 在删除NOTE表中的数据后触发
|
|
|
|
" BEGIN" +
|
|
|
|
" BEGIN" + // 开始事务
|
|
|
|
" DELETE FROM " + TABLE.DATA +
|
|
|
|
" DELETE FROM " + TABLE.DATA + // 从DATA表中删除数据
|
|
|
|
" WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" +
|
|
|
|
" WHERE " + DataColumns.NOTE_ID + "=old." + NoteColumns.ID + ";" + // 条件为NOTE_ID等于old中的ID
|
|
|
|
" END";
|
|
|
|
" END"; // 结束事务
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* Delete notes belong to folder which has been deleted
|
|
|
|
* Delete notes belong to folder which has been deleted
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 定义一个常量，用于删除文件夹时触发删除笔记的触发器
|
|
|
|
private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
|
|
|
|
private static final String FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER =
|
|
|
|
"CREATE TRIGGER folder_delete_notes_on_delete " +
|
|
|
|
"CREATE TRIGGER folder_delete_notes_on_delete " +
|
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +
|
|
|
|
" AFTER DELETE ON " + TABLE.NOTE +
|
|
|
|
" BEGIN" +
|
|
|
|
" BEGIN" +
|
|
|
|
|
|
|
|
// 删除与该笔记相关的所有笔记
|
|
|
|
" DELETE FROM " + TABLE.NOTE +
|
|
|
|
" DELETE FROM " + TABLE.NOTE +
|
|
|
|
|
|
|
|
// 从笔记表中删除
|
|
|
|
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
|
|
|
|
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
|
|
|
|
|
|
|
|
// 条件为该笔记的ID等于旧笔记的ID
|
|
|
|
" END";
|
|
|
|
" END";
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* Move notes belong to folder which has been moved to trash folder
|
|
|
|
* Move notes belong to folder which has been moved to trash folder
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 定义一个常量，用于触发将文件夹移动到回收站的操作
|
|
|
|
private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
|
|
|
|
private static final String FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER =
|
|
|
|
"CREATE TRIGGER folder_move_notes_on_trash " +
|
|
|
|
"CREATE TRIGGER folder_move_notes_on_trash " +
|
|
|
|
" AFTER UPDATE ON " + TABLE.NOTE +
|
|
|
|
" AFTER UPDATE ON " + TABLE.NOTE +
|
|
|
|
" WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
|
|
|
|
" WHEN new." + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
|
|
|
|
" BEGIN" +
|
|
|
|
" BEGIN" + // 开始事务
|
|
|
|
" UPDATE " + TABLE.NOTE +
|
|
|
|
" UPDATE " + TABLE.NOTE + // 更新NOTE表
|
|
|
|
" SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER +
|
|
|
|
" SET " + NoteColumns.PARENT_ID + "=" + Notes.ID_TRASH_FOLER + // 将PARENT_ID设置为回收站ID
|
|
|
|
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" +
|
|
|
|
" WHERE " + NoteColumns.PARENT_ID + "=old." + NoteColumns.ID + ";" + // 将PARENT_ID等于old.ID的记录更新
|
|
|
|
" END";
|
|
|
|
" END"; // 结束事务
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 构造函数，用于初始化NotesDatabaseHelper对象
|
|
|
|
public NotesDatabaseHelper(Context context) {
|
|
|
|
public NotesDatabaseHelper(Context context) {
|
|
|
|
|
|
|
|
// 调用父类的构造函数，传入上下文、数据库名称、游标工厂、数据库版本号
|
|
|
|
super(context, DB_NAME, null, DB_VERSION);
|
|
|
|
super(context, DB_NAME, null, DB_VERSION);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public void createNoteTable(SQLiteDatabase db) {
|
|
|
|
public void createNoteTable(SQLiteDatabase db) {
|
|
|
|
|
|
|
|
// 执行创建note表的SQL语句
|
|
|
|
db.execSQL(CREATE_NOTE_TABLE_SQL);
|
|
|
|
db.execSQL(CREATE_NOTE_TABLE_SQL);
|
|
|
|
|
|
|
|
// 重新创建note表的触发器
|
|
|
|
reCreateNoteTableTriggers(db);
|
|
|
|
reCreateNoteTableTriggers(db);
|
|
|
|
|
|
|
|
// 创建系统文件夹
|
|
|
|
createSystemFolder(db);
|
|
|
|
createSystemFolder(db);
|
|
|
|
|
|
|
|
// 打印日志，note表已创建
|
|
|
|
Log.d(TAG, "note table has been created");
|
|
|
|
Log.d(TAG, "note table has been created");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
private void reCreateNoteTableTriggers(SQLiteDatabase db) {
|
|
|
|
private void reCreateNoteTableTriggers(SQLiteDatabase db) {
|
|
|
|
|
|
|
|
// 删除increase_folder_count_on_update触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_update");
|
|
|
|
|
|
|
|
// 删除decrease_folder_count_on_update触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_update");
|
|
|
|
|
|
|
|
// 删除decrease_folder_count_on_delete触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS decrease_folder_count_on_delete");
|
|
|
|
|
|
|
|
// 删除delete_data_on_delete触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS delete_data_on_delete");
|
|
|
|
|
|
|
|
// 删除increase_folder_count_on_insert触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS increase_folder_count_on_insert");
|
|
|
|
|
|
|
|
// 删除folder_delete_notes_on_delete触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS folder_delete_notes_on_delete");
|
|
|
|
|
|
|
|
// 删除folder_move_notes_on_trash触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS folder_move_notes_on_trash");
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 执行增加文件夹计数触发器
|
|
|
|
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
|
|
|
|
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
|
|
|
|
|
|
|
|
// 执行减少文件夹计数触发器
|
|
|
|
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
|
|
|
|
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_UPDATE_TRIGGER);
|
|
|
|
|
|
|
|
// 执行减少文件夹计数触发器
|
|
|
|
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER);
|
|
|
|
db.execSQL(NOTE_DECREASE_FOLDER_COUNT_ON_DELETE_TRIGGER);
|
|
|
|
|
|
|
|
// 执行删除数据触发器
|
|
|
|
db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER);
|
|
|
|
db.execSQL(NOTE_DELETE_DATA_ON_DELETE_TRIGGER);
|
|
|
|
|
|
|
|
// 执行增加文件夹计数触发器
|
|
|
|
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER);
|
|
|
|
db.execSQL(NOTE_INCREASE_FOLDER_COUNT_ON_INSERT_TRIGGER);
|
|
|
|
|
|
|
|
// 执行删除文件夹触发器
|
|
|
|
db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER);
|
|
|
|
db.execSQL(FOLDER_DELETE_NOTES_ON_DELETE_TRIGGER);
|
|
|
|
|
|
|
|
// 执行移动文件夹触发器
|
|
|
|
db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
|
|
|
|
db.execSQL(FOLDER_MOVE_NOTES_ON_TRASH_TRIGGER);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 创建系统文件夹
|
|
|
|
private void createSystemFolder(SQLiteDatabase db) {
|
|
|
|
private void createSystemFolder(SQLiteDatabase db) {
|
|
|
|
|
|
|
|
// 创建ContentValues对象，用于存储数据
|
|
|
|
ContentValues values = new ContentValues();
|
|
|
|
ContentValues values = new ContentValues();
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* call record foler for call notes
|
|
|
|
* call record foler for call notes
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 将Notes.ID_CALL_RECORD_FOLDER的值放入values中
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_CALL_RECORD_FOLDER);
|
|
|
|
|
|
|
|
// 将Notes.TYPE_SYSTEM的值放入values中
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
|
|
|
// 将values中的值插入到TABLE.NOTE表中
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* root folder which is default folder
|
|
|
|
* root folder which is default folder
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 清空values
|
|
|
|
values.clear();
|
|
|
|
values.clear();
|
|
|
|
|
|
|
|
// 将Notes.ID_ROOT_FOLDER放入values中
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_ROOT_FOLDER);
|
|
|
|
|
|
|
|
// 将Notes.TYPE_SYSTEM放入values中
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
|
|
|
// 将values插入到TABLE.NOTE表中
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* temporary folder which is used for moving note
|
|
|
|
* temporary folder which is used for moving note
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 清空values
|
|
|
|
values.clear();
|
|
|
|
values.clear();
|
|
|
|
|
|
|
|
// 将NoteColumns.ID的值设为Notes.ID_TEMPARAY_FOLDER
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TEMPARAY_FOLDER);
|
|
|
|
|
|
|
|
// 将NoteColumns.TYPE的值设为Notes.TYPE_SYSTEM
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
|
|
|
// 将values插入到TABLE.NOTE表中
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
/**
|
|
|
|
* create trash folder
|
|
|
|
* create trash folder
|
|
|
|
*/
|
|
|
|
*/
|
|
|
|
|
|
|
|
// 清空values
|
|
|
|
values.clear();
|
|
|
|
values.clear();
|
|
|
|
|
|
|
|
// 将NoteColumns.ID的值设为Notes.ID_TRASH_FOLER
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
|
|
|
|
|
|
|
|
// 将NoteColumns.TYPE的值设为Notes.TYPE_SYSTEM
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
|
|
|
// 将values插入到TABLE.NOTE表中
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
public void createDataTable(SQLiteDatabase db) {
|
|
|
|
public void createDataTable(SQLiteDatabase db) {
|
|
|
|
|
|
|
|
// 执行创建数据表的SQL语句
|
|
|
|
db.execSQL(CREATE_DATA_TABLE_SQL);
|
|
|
|
db.execSQL(CREATE_DATA_TABLE_SQL);
|
|
|
|
|
|
|
|
// 重新创建数据表触发器
|
|
|
|
reCreateDataTableTriggers(db);
|
|
|
|
reCreateDataTableTriggers(db);
|
|
|
|
|
|
|
|
// 执行创建数据表索引的SQL语句
|
|
|
|
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
|
|
|
|
db.execSQL(CREATE_DATA_NOTE_ID_INDEX_SQL);
|
|
|
|
|
|
|
|
// 打印日志，表示数据表已经创建
|
|
|
|
Log.d(TAG, "data table has been created");
|
|
|
|
Log.d(TAG, "data table has been created");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 重新创建数据表触发器
|
|
|
|
private void reCreateDataTableTriggers(SQLiteDatabase db) {
|
|
|
|
private void reCreateDataTableTriggers(SQLiteDatabase db) {
|
|
|
|
|
|
|
|
// 删除update_note_content_on_insert触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_insert");
|
|
|
|
|
|
|
|
// 删除update_note_content_on_update触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_update");
|
|
|
|
|
|
|
|
// 删除update_note_content_on_delete触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_content_on_delete");
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 执行更新笔记内容的触发器
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_INSERT_TRIGGER);
|
|
|
|
|
|
|
|
// 执行更新笔记内容的触发器
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_UPDATE_TRIGGER);
|
|
|
|
|
|
|
|
// 执行更新笔记内容的触发器
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
|
|
|
|
db.execSQL(DATA_UPDATE_NOTE_CONTENT_ON_DELETE_TRIGGER);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 获取NotesDatabaseHelper实例
|
|
|
|
static synchronized NotesDatabaseHelper getInstance(Context context) {
|
|
|
|
static synchronized NotesDatabaseHelper getInstance(Context context) {
|
|
|
|
|
|
|
|
// 如果mInstance为空，则创建一个新的NotesDatabaseHelper实例
|
|
|
|
if (mInstance == null) {
|
|
|
|
if (mInstance == null) {
|
|
|
|
mInstance = new NotesDatabaseHelper(context);
|
|
|
|
mInstance = new NotesDatabaseHelper(context);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// 返回mInstance实例
|
|
|
|
return mInstance;
|
|
|
|
return mInstance;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
@Override
|
|
|
|
@Override
|
|
|
|
|
|
|
|
// 重写onCreate方法，当数据库创建时调用
|
|
|
|
public void onCreate(SQLiteDatabase db) {
|
|
|
|
public void onCreate(SQLiteDatabase db) {
|
|
|
|
|
|
|
|
// 创建Note表
|
|
|
|
createNoteTable(db);
|
|
|
|
createNoteTable(db);
|
|
|
|
|
|
|
|
// 创建Data表
|
|
|
|
createDataTable(db);
|
|
|
|
createDataTable(db);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 重写onUpgrade方法，当数据库版本升级时调用
|
|
|
|
@Override
|
|
|
|
@Override
|
|
|
|
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
|
|
|
|
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
|
|
|
|
|
|
|
|
// 是否重新创建触发器
|
|
|
|
boolean reCreateTriggers = false;
|
|
|
|
boolean reCreateTriggers = false;
|
|
|
|
|
|
|
|
// 是否跳过V2版本
|
|
|
|
boolean skipV2 = false;
|
|
|
|
boolean skipV2 = false;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 如果旧版本为1，则升级到v2版本
|
|
|
|
if (oldVersion == 1) {
|
|
|
|
if (oldVersion == 1) {
|
|
|
|
upgradeToV2(db);
|
|
|
|
upgradeToV2(db);
|
|
|
|
skipV2 = true; // this upgrade including the upgrade from v2 to v3
|
|
|
|
skipV2 = true; // this upgrade including the upgrade from v2 to v3
|
|
|
|
oldVersion++;
|
|
|
|
oldVersion++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 如果旧版本为2且不跳过V2版本，则升级到V3版本，并重新创建触发器，同时旧版本加1
|
|
|
|
if (oldVersion == 2 && !skipV2) {
|
|
|
|
if (oldVersion == 2 && !skipV2) {
|
|
|
|
upgradeToV3(db);
|
|
|
|
upgradeToV3(db);
|
|
|
|
reCreateTriggers = true;
|
|
|
|
reCreateTriggers = true;
|
|
|
|
oldVersion++;
|
|
|
|
oldVersion++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 如果旧版本号为3
|
|
|
|
if (oldVersion == 3) {
|
|
|
|
if (oldVersion == 3) {
|
|
|
|
|
|
|
|
// 升级到版本4
|
|
|
|
upgradeToV4(db);
|
|
|
|
upgradeToV4(db);
|
|
|
|
|
|
|
|
// 版本号加1
|
|
|
|
oldVersion++;
|
|
|
|
oldVersion++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 如果需要重新创建触发器，则执行以下操作
|
|
|
|
if (reCreateTriggers) {
|
|
|
|
if (reCreateTriggers) {
|
|
|
|
|
|
|
|
// 重新创建NoteTable触发器
|
|
|
|
reCreateNoteTableTriggers(db);
|
|
|
|
reCreateNoteTableTriggers(db);
|
|
|
|
|
|
|
|
// 重新创建DataTable触发器
|
|
|
|
reCreateDataTableTriggers(db);
|
|
|
|
reCreateDataTableTriggers(db);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
if (oldVersion != newVersion) {
|
|
|
|
// 如果旧版本不等于新版本，则抛出异常
|
|
|
|
|
|
|
|
if (oldVersion != newVersion) {
|
|
|
|
throw new IllegalStateException("Upgrade notes database to version " + newVersion
|
|
|
|
throw new IllegalStateException("Upgrade notes database to version " + newVersion
|
|
|
|
+ "fails");
|
|
|
|
+ "fails");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
private void upgradeToV2(SQLiteDatabase db) {
|
|
|
|
private void upgradeToV2(SQLiteDatabase db) {
|
|
|
|
|
|
|
|
// 删除旧版本的NOTE表
|
|
|
|
db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
|
|
|
|
db.execSQL("DROP TABLE IF EXISTS " + TABLE.NOTE);
|
|
|
|
|
|
|
|
// 删除旧版本的DATA表
|
|
|
|
db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA);
|
|
|
|
db.execSQL("DROP TABLE IF EXISTS " + TABLE.DATA);
|
|
|
|
|
|
|
|
// 创建新版本的NOTE表
|
|
|
|
createNoteTable(db);
|
|
|
|
createNoteTable(db);
|
|
|
|
|
|
|
|
// 创建新版本的DATA表
|
|
|
|
createDataTable(db);
|
|
|
|
createDataTable(db);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 将数据库升级到V3版本
|
|
|
|
private void upgradeToV3(SQLiteDatabase db) {
|
|
|
|
private void upgradeToV3(SQLiteDatabase db) {
|
|
|
|
// drop unused triggers
|
|
|
|
// drop unused triggers
|
|
|
|
|
|
|
|
// 删除未使用的触发器
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_insert");
|
|
|
|
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_delete");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update");
|
|
|
|
db.execSQL("DROP TRIGGER IF EXISTS update_note_modified_date_on_update");
|
|
|
|
// add a column for gtask id
|
|
|
|
// add a column for gtask id
|
|
|
|
|
|
|
|
// 向数据库中的NOTE表添加一个名为GTASK_ID的列，类型为TEXT，默认值为空字符串
|
|
|
|
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID
|
|
|
|
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.GTASK_ID
|
|
|
|
+ " TEXT NOT NULL DEFAULT ''");
|
|
|
|
+ " TEXT NOT NULL DEFAULT ''");
|
|
|
|
// add a trash system folder
|
|
|
|
// add a trash system folder
|
|
|
|
|
|
|
|
// 创建一个ContentValues对象，用于存储要插入的数据
|
|
|
|
ContentValues values = new ContentValues();
|
|
|
|
ContentValues values = new ContentValues();
|
|
|
|
|
|
|
|
// 将ID_TRASH_FOLER的值放入NoteColumns.ID字段中
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
|
|
|
|
values.put(NoteColumns.ID, Notes.ID_TRASH_FOLER);
|
|
|
|
|
|
|
|
// 将TYPE_SYSTEM的值放入NoteColumns.TYPE字段中
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
values.put(NoteColumns.TYPE, Notes.TYPE_SYSTEM);
|
|
|
|
|
|
|
|
// 将values中的数据插入到TABLE.NOTE表中
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
db.insert(TABLE.NOTE, null, values);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 将数据库升级到V4版本
|
|
|
|
private void upgradeToV4(SQLiteDatabase db) {
|
|
|
|
private void upgradeToV4(SQLiteDatabase db) {
|
|
|
|
|
|
|
|
// 执行SQL语句，向NOTE表中添加VERSION列，类型为INTEGER，默认值为0
|
|
|
|
|
|
|
|
// 向数据库中的NOTE表添加一个名为VERSION的列，类型为INTEGER，默认值为0
|
|
|
|
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
|
|
|
|
db.execSQL("ALTER TABLE " + TABLE.NOTE + " ADD COLUMN " + NoteColumns.VERSION
|
|
|
|
+ " INTEGER NOT NULL DEFAULT 0");
|
|
|
|
+ " INTEGER NOT NULL DEFAULT 0");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
hongbeibei
lj
