1 /*
2  * Copyright 2019 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 com.android.bluetooth.btservice.storage;
18 
19 import androidx.room.Dao;
20 import androidx.room.Insert;
21 import androidx.room.OnConflictStrategy;
22 import androidx.room.Query;
23 
24 import java.util.List;
25 
26 @Dao
27 interface MetadataDao {
28     /**
29      * Load all items in the database
30      */
31     @Query("SELECT * FROM metadata ORDER BY last_active_time DESC")
load()32     List<Metadata> load();
33 
34     /**
35      * Create or update a Metadata in the database
36      */
37     @Insert(onConflict = OnConflictStrategy.REPLACE)
insert(Metadata... metadata)38     void insert(Metadata... metadata);
39 
40     /**
41      * Delete a Metadata in the database
42      */
43     @Query("DELETE FROM metadata WHERE address = :address")
delete(String address)44     void delete(String address);
45 
46     /**
47      * Delete all Metadatas in the database
48      */
49     @Query("DELETE FROM metadata")
deleteAll()50     void deleteAll();
51 }
52