| 1 | package com.hammurapi.eventbus; |
| 2 | |
| 3 | import java.util.HashSet; |
| 4 | import java.util.Set; |
| 5 | |
| 6 | import com.hammurapi.common.TokenExpander; |
| 7 | |
| 8 | /** |
| 9 | * This class introspects instances passed to it and creates event handlers from |
| 10 | * classes annotated with Handler annotation. |
| 11 | * @author Pavel Vlasov |
| 12 | * |
| 13 | * @param <E> Event type. |
| 14 | * @param <P> Priority type. |
| 15 | * @param <C> Context type. |
| 16 | * @param <K> Registration key type. |
| 17 | */ |
| 18 | public class Introspector<E, C, K, H extends EventBus.Handle<E,Integer,C>, S extends EventStore<E,Integer,C,H,S>, B extends EventBus<E, Integer, C, K, H, S>> extends ReflectiveEventHandlerFactory<E, C, H, S> implements JavaBinder<E, C, K, H, S, B, C> { |
| 19 | |
| 20 | public Introspector(ClassLoader classLoader, TokenExpander tokenExpander) { |
| 21 | super(classLoader, tokenExpander); |
| 22 | } |
| 23 | |
| 24 | /** |
| 25 | * Registers instance methods annotated with Handler annotation with the bus. |
| 26 | * @param instance Instance with handler methods. |
| 27 | * @param bus Event bus. |
| 28 | * @return Set of registration keys. |
| 29 | */ |
| 30 | @Override |
| 31 | public Set<K> bind(final C instance, B bus) { |
| 32 | Set<K> ret = new HashSet<K>(); |
| 33 | for (ReflectiveEventHandler<E,C,H,S> handler: createHandlers(instance, bus.getEventType())) { |
| 34 | ret.add(bus.addHandler(handler)); |
| 35 | } |
| 36 | return ret; |
| 37 | } |
| 38 | } |