2 * Copyright © 2021 Damyan Ivanov.
3 * This file is part of MoLe.
4 * MoLe is free software: you can distribute it and/or modify it
5 * under the term of the GNU General Public License as published by
6 * the Free Software Foundation, either version 3 of the License, or
7 * (at your opinion), any later version.
9 * MoLe is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License terms for details.
14 * You should have received a copy of the GNU General Public License
15 * along with MoLe. If not, see <https://www.gnu.org/licenses/>.
18 package net.ktnx.mobileledger.db;
20 import androidx.annotation.NonNull;
21 import androidx.room.Database;
22 import androidx.room.Room;
23 import androidx.room.RoomDatabase;
24 import androidx.room.migration.Migration;
25 import androidx.sqlite.db.SupportSQLiteDatabase;
27 import net.ktnx.mobileledger.App;
28 import net.ktnx.mobileledger.dao.CurrencyDAO;
29 import net.ktnx.mobileledger.dao.PatternAccountDAO;
30 import net.ktnx.mobileledger.dao.PatternHeaderDAO;
31 import net.ktnx.mobileledger.utils.MobileLedgerDatabase;
33 @Database(version = 52, entities = {PatternHeader.class, PatternAccount.class, Currency.class})
34 abstract public class DB extends RoomDatabase {
35 private static DB instance;
36 public static DB get() {
39 synchronized (DB.class) {
44 Room.databaseBuilder(App.instance, DB.class, MobileLedgerDatabase.DB_NAME)
45 .addMigrations(new Migration[]{new Migration(51, 52) {
47 public void migrate(@NonNull SupportSQLiteDatabase db) {
48 db.beginTransaction();
50 db.execSQL("create index fk_pattern_accounts_pattern on " +
51 "pattern_accounts(pattern_id);");
52 db.execSQL("create index fk_pattern_accounts_currency on " +
53 "pattern_accounts(currency);");
54 db.setTransactionSuccessful();
65 public abstract PatternHeaderDAO getPatternDAO();
67 public abstract PatternAccountDAO getPatternAccountDAO();
69 public abstract CurrencyDAO getCurrencyDAO();