ProvidedAutoMigrationSpec.java
/*
* Copyright 2020 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;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
/**
* Marks a class as an auto migration spec that will be provided to Room at runtime.
* <p>
* An instance of a class annotated with this annotation has to be provided to Room using
* {@code Room.databaseBuilder.addAutoMigrationSpec(AutoMigrationSpec)}. Room will verify that
* the spec is provided in the builder configuration and if not, an
* {@link IllegalArgumentException} will be thrown.
*/
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.CLASS)
public @interface ProvidedAutoMigrationSpec {
}