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UserDataSource.java
/* * Copyright (C) 2017 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 com.example.android.observability; import com.example.android.observability.persistence.User; import io.reactivex.Flowable; /** * Access point for managing user data. */ public interface UserDataSource { /** * Gets the user from the data source. * * @return the user from the data source. */ Flowable
getUser(); /** * Inserts the user into the data source, or, if this is an existing user, updates it. * * @param user the user to be inserted or updated. */ void insertOrUpdateUser(User user); /** * Deletes all users from the data source. */ void deleteAllUsers(); }