| /* |
| * 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 java8 method reference to a zero-argument method from a given component implementation class. |
| * <p> The type of the class on which the callback is invoked on is represented by the T generic parameter. |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| @FunctionalInterface |
| public interface Cb<T> extends SerializableLambda { |
| /** |
| * Invokes the callback method on the given component implementation instance. |
| * @param t the component implementation instance the callback is invoked on. |
| */ |
| void accept(T t); |
| |
| default Cb<T> andThen(Cb<? super T> after) { |
| Objects.requireNonNull(after); |
| return (T t) -> { |
| accept(t); |
| after.accept(t); |
| }; |
| } |
| } |