1/* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16interface IPropertySubscriberLookup { 17 18 /* 19 chk subscriber is known 20 same as Map.has 21*/ 22 has(id: number): boolean; 23 24 /* 25 retrieve subscriber by id 26 same as Map.get 27 */ 28 get(id: number): IPropertySubscriber; 29 30 /* 31 unregister a subscriber 32 same as Map.delete 33 */ 34 delete(id: number): boolean; 35 36 /* 37 add a new subscriber 38 same as Map.set 39 */ 40 add(newSubsriber: IPropertySubscriber): boolean; 41} 42