/*
 * 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.db

import android.arch.lifecycle.LiveData
import android.arch.persistence.room.Dao
import android.arch.persistence.room.Query
import io.reactivex.Flowable

/**
 * Data Access Object for the users table.
 */
@Dao
abstract class UserDao : BaseDao<User>() {

    /**
     * Get a user by id.

     * @return the user from the table with a specific id.
     */
    @Query("SELECT * FROM USER WHERE id = :id")
    abstract fun getUserById(id: String): Flowable<User>

    /**
     * Delete all users.
     */
    @Query("DELETE FROM USER")
    abstract fun deleteAllUsers()
}