| package org.apache.felix.dm.lambda.callbacks; |
| |
| import java.util.Objects; |
| |
| /** |
| * Represents a callback(Service) on an Object instance. |
| * |
| * <p> The type of the service passed in argument to the callback is defined by the "S" generic parameter. |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| @FunctionalInterface |
| public interface InstanceCbService<S> { |
| /** |
| * Handles the given argument. |
| * @param service a Service |
| */ |
| void accept(S service); |
| |
| default InstanceCbService<S> andThen(InstanceCbService<S> after) { |
| Objects.requireNonNull(after); |
| return (S service) -> { |
| accept(service); |
| after.accept(service); |
| }; |
| } |
| } |