| /* |
| * Copyright (C) 2016 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 android.arch.persistence.room; |
| |
| import java.lang.annotation.ElementType; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.lang.annotation.Target; |
| |
| /** |
| * Marks the class as a Data Access Object. |
| * <p> |
| * Data Access Objects are the main classes where you define your database interactions. They can |
| * include a variety of query methods. |
| * <p> |
| * The class marked with {@code @Dao} should either be an interface or an abstract class. At compile |
| * time, Room will generate an implementation of this class when it is referenced by a |
| * {@link Database}. |
| * <p> |
| * An abstract {@code @Dao} class can optionally have a constructor that takes a {@link Database} |
| * as its only parameter. |
| * <p> |
| * It is recommended to have multiple {@code Dao} classes in your codebase depending on the tables |
| * they touch. |
| * |
| * @see Query |
| * @see Delete |
| * @see Insert |
| */ |
| @Target(ElementType.TYPE) |
| @Retention(RetentionPolicy.CLASS) |
| public @interface Dao { |
| } |