Pierre De Rop | 1152750 | 2016-02-18 21:07:16 +0000 | [diff] [blame^] | 1 | package org.apache.felix.dm.lambda.callbacks; |
| 2 | |
| 3 | import java.util.Objects; |
| 4 | |
| 5 | import org.apache.felix.dm.Component; |
| 6 | |
| 7 | /** |
| 8 | * Represents a callback(Configuration, Component) which accepts a configuration type for wrapping properties |
| 9 | * behind a dynamic proxy interface. For more informations about configuration type, please refer to {@link CbConfiguration}. |
| 10 | * |
| 11 | * <p> The T generic parameter represents the type of the class on which the callback is invoked on. |
| 12 | * <p> The U generic parameter represents the type of the configuration class passed to the callback argument. |
| 13 | * |
| 14 | * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| 15 | */ |
| 16 | @FunctionalInterface |
| 17 | public interface CbConfigurationComponent<T, U> extends SerializableLambda { |
| 18 | /** |
| 19 | * Handles the given arguments |
| 20 | * @param instance the Component implementation instance on which the callback is invoked on. |
| 21 | * @param configuration the configuration proxy |
| 22 | * @param component the callback Component |
| 23 | */ |
| 24 | void accept(T instance, U configuration, Component component); |
| 25 | |
| 26 | default CbConfigurationComponent<T, U> andThen(CbConfigurationComponent<T, U> after) { |
| 27 | Objects.requireNonNull(after); |
| 28 | return (T instance, U configuration, Component component) -> { |
| 29 | accept(instance, configuration, component); |
| 30 | after.accept(instance, configuration, component); |
| 31 | }; |
| 32 | } |
| 33 | } |