1 /* 2 * Copyright 2017 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.work.impl.model; 18 19 import static android.arch.persistence.room.OnConflictStrategy.IGNORE; 20 21 import android.arch.persistence.room.Dao; 22 import android.arch.persistence.room.Insert; 23 import android.arch.persistence.room.Query; 24 25 import java.util.List; 26 27 /** 28 * The Data Access Object for {@link WorkTag}s. 29 */ 30 @Dao 31 public interface WorkTagDao { 32 33 /** 34 * Inserts a {@link WorkTag} into the table. 35 * 36 * @param workTag The {@link WorkTag} to insert 37 */ 38 @Insert(onConflict = IGNORE) 39 void insert(WorkTag workTag); 40 41 /** 42 * Retrieves all {@link WorkSpec} ids with the given tag. 43 * 44 * @param tag The matching tag 45 * @return All {@link WorkSpec} ids with the given tag 46 */ 47 @Query("SELECT work_spec_id FROM worktag WHERE tag=:tag") 48 List<String> getWorkSpecIdsWithTag(String tag); 49 50 /** 51 * Retrieves all tags for a given {@link WorkSpec} id. 52 * 53 * @param id The id of the {@link WorkSpec} 54 * @return A list of tags for that {@link WorkSpec} 55 */ 56 @Query("SELECT DISTINCT tag FROM worktag WHERE work_spec_id=:id") 57 List<String> getTagsForWorkSpecId(String id); 58 } 59
