1 /* 2 * Copyright (C) 2023 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.queryable.queries; 18 19 import com.android.queryable.Queryable; 20 import com.android.queryable.info.MetadataInfo; 21 22 import java.util.Set; 23 24 /** Query for a metadata. */ 25 public interface MetadataQuery<E extends Queryable> extends Query<Set<MetadataInfo>> { 26 27 /** Queries a metadata. */ metadata()28 static MetadataQueryHelper.MetadataQueryBase metadata() { 29 return new MetadataQueryHelper.MetadataQueryBase(); 30 } 31 32 /** Queries a given key on the metadata. */ key(String key)33 MetadataKeyQuery<E> key(String key); 34 35 } 36