mirror of https://github.com/M66B/FairEmail.git
95 lines
2.9 KiB
Java
95 lines
2.9 KiB
Java
package eu.faircode.email;
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import android.arch.persistence.db.SupportSQLiteDatabase;
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import android.arch.persistence.room.Database;
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import android.arch.persistence.room.Room;
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import android.arch.persistence.room.RoomDatabase;
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import android.arch.persistence.room.TypeConverter;
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import android.arch.persistence.room.TypeConverters;
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import android.arch.persistence.room.migration.Migration;
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import android.content.Context;
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import android.util.Log;
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/*
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This file is part of Safe email.
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Safe email is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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NetGuard is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with NetGuard. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2018 by Marcel Bokhorst (M66B)
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*/
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// https://developer.android.com/topic/libraries/architecture/room.html
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@Database(
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entities = {
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EntityIdentity.class,
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EntityAccount.class,
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EntityFolder.class,
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EntityMessage.class,
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EntityOperation.class
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},
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version = 1,
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exportSchema = true
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)
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@TypeConverters({DB.Converters.class})
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public abstract class DB extends RoomDatabase {
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public abstract DaoIdentity identity();
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public abstract DaoAccount account();
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public abstract DaoFolder folder();
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public abstract DaoMessage message();
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public abstract DaoOperation operation();
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private static DB sInstance;
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private static final String DB_NAME = "email.db";
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public static synchronized DB getInstance(Context context) {
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if (sInstance == null)
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sInstance = migrate(Room.databaseBuilder(context.getApplicationContext(), DB.class, DB_NAME));
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return sInstance;
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}
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private static DB migrate(RoomDatabase.Builder<DB> builder) {
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return builder
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//.addMigrations(MIGRATION_1_2)
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.build();
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}
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private static final Migration MIGRATION_1_2 = new Migration(1, 2) {
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@Override
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public void migrate(SupportSQLiteDatabase db) {
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Log.i(Helper.TAG, "DB migration from version " + startVersion + " to " + endVersion);
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db.execSQL("ALTER TABLE message ADD COLUMN error TEXT");
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}
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};
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public static class Converters {
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@TypeConverter
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public static byte[] fromString(String value) {
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return null;
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}
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@TypeConverter
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public static String fromBytes(byte[] value) {
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return null;
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}
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}
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}
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