FairEmail/app/src/main/java/androidx/room/AutoMigrationSpec.java

39 lines
1.3 KiB
Java

/*
* Copyright 2021 The Android Open Source Project
*
* 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 androidx.room.migration;
import androidx.annotation.NonNull;
import androidx.room.AutoMigration;
import androidx.sqlite.db.SupportSQLiteDatabase;
/**
* Interface for defining an automatic migration specification for Room databases.
* <p>
* The methods defined in this interface will be called on a background thread from the executor
* set in Room's builder. It is important to note that the methods are all in a transaction when
* it is called.
*
* @see AutoMigration
*/
public interface AutoMigrationSpec {
/**
* Invoked after the migration is completed.
* @param db The SQLite database.
*/
default void onPostMigrate(@NonNull SupportSQLiteDatabase db) {}
}