1 /*
2  * Copyright 2020 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package androidx.paging.compose.demos.room
18 
19 import androidx.paging.PagingSource
20 import androidx.room.Dao
21 import androidx.room.Delete
22 import androidx.room.Insert
23 import androidx.room.Query
24 import androidx.room.Update
25 
26 // Warning: Every change of this schema will require database migration
27 @Dao
28 interface UserDao {
29     @Query("SELECT * FROM Users ORDER BY name COLLATE NOCASE ASC")
allUsersnull30     fun allUsers(): PagingSource<Int, User>
31 
32     @Insert fun insert(user: User)
33 
34     @Delete fun delete(user: User)
35 
36     @Update fun update(user: User)
37 
38     @Query("DELETE FROM users") fun clearAll()
39 
40     @Query("SELECT * FROM users ORDER BY RANDOM() LIMIT 1") fun getRandomUser(): User?
41 }
42