| package org.apache.felix.dm.lambda.callbacks; |
| |
| import java.util.Objects; |
| |
| import org.apache.felix.dm.Component; |
| import org.osgi.framework.ServiceReference; |
| |
| /** |
| * Represents a callback(Service, Component, ServiceReference) that is invoked on a Component implementation class. |
| * 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 CbServiceComponentRef<T, S> extends SerializableLambda { |
| /** |
| * Handles the given arguments. |
| * @param instance the Component implementation instance on which the callback is invoked on. |
| * @param service the first callback parameter |
| * @param c the second callback parameter |
| * @param ref the third callback parameter |
| */ |
| void accept(T instance, S service, Component c, ServiceReference<S> ref); |
| |
| default CbServiceComponentRef<T, S> andThen(CbServiceComponentRef<T, S> after) { |
| Objects.requireNonNull(after); |
| return (T instance, S service, Component c, ServiceReference<S> ref) -> { |
| accept(instance, service, c, ref); |
| after.accept(instance, service, c, ref); |
| }; |
| } |
| } |