| 1 | package com.hammurapi.eventbus; |
| 2 | |
| 3 | import java.util.ArrayList; |
| 4 | import java.util.Collection; |
| 5 | |
| 6 | import com.hammurapi.common.TokenExpander; |
| 7 | import com.hammurapi.extract.Predicate; |
| 8 | |
| 9 | /** |
| 10 | * This class adds a single method to the base class - it creates predicate/handler pairs from |
| 11 | * @author Pavel Vlasov |
| 12 | * |
| 13 | * @param <E> |
| 14 | * @param <C> |
| 15 | */ |
| 16 | public class ReflectiveEventHandlerFactory<E, C, H extends EventBus.Handle<E,Integer,C>, S extends EventStore<E,Integer,C,H,S>> extends IntrospectorBase<E, C> { |
| 17 | |
| 18 | protected ReflectiveEventHandlerFactory(ClassLoader classLoader, TokenExpander tokenExpander) { |
| 19 | super(classLoader, tokenExpander); |
| 20 | } |
| 21 | |
| 22 | /** |
| 23 | * Introspects class and creates predicate/handler pairs. |
| 24 | * @param handlerClass |
| 25 | * @param eventType |
| 26 | * @return |
| 27 | */ |
| 28 | @SuppressWarnings("unchecked") |
| 29 | public Collection<ReflectiveEventHandler<E,C,H,S>> createHandlers(C instance, Class<E> eventType) { |
| 30 | Collection<ReflectiveEventHandler<E,C,H,S>> ret = new ArrayList<ReflectiveEventHandler<E,C,H,S>>(); |
| 31 | for (IntrospectionResult<E, C> ir: introspect((Class<C>) instance.getClass(), eventType)) { |
| 32 | ReflectiveEventHandler<E, C, H, S> handler = new ReflectiveEventHandler<E,C,H,S>(instance, ir.getOffset(), ir.getMethod(), ir.getParameterTypes(), ir.getHandlerAnnotation(), eventType, ir.getPredicates()); |
| 33 | ret.add(handler); |
| 34 | } |
| 35 | |
| 36 | return ret; |
| 37 | } |
| 38 | } |