| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.felix.dm.lambda.callbacks; |
| |
| import java.util.Objects; |
| |
| /** |
| * Represents a method reference to a no-args callback method from an arbitrary Object instance. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| @FunctionalInterface |
| public interface InstanceCb { |
| /** |
| * Implements the callback method. |
| */ |
| void cb(); |
| |
| default InstanceCb andThen(InstanceCb after) { |
| Objects.requireNonNull(after); |
| return () -> { |
| cb(); |
| after.cb(); |
| }; |
| } |
| } |