1 /* 2 * $Id: EntryPointResolverSet.java 19191 2010-08-25 21:05:23Z tcarlson $ 3 * -------------------------------------------------------------------------------------- 4 * Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com 5 * 6 * The software in this package is published under the terms of the CPAL v1.0 7 * license, a copy of which has been included with this distribution in the 8 * LICENSE.txt file. 9 */ 10 11 package org.mule.api.model; 12 13 import org.mule.api.MuleEventContext; 14 15 /** 16 * <code>EntryPointResolver</code> resolves a method to call on the given 17 * service object when an event is received. 18 * This object maintains a set of Resolvers that will be used in order to resolve 19 * an entrypoint on a service object until one is found or until the set is 20 * exhausted. 21 * 22 * Note that there is a one-to-one mapping from component to EntryPointResolverSet. Each component must get a separate set 23 * with {@link org.mule.api.model.EntryPointResolver} instances that are not shared. An EntryPointResolver is allowed to cache state 24 * and can assume the component will always be of the the same type. 25 */ 26 public interface EntryPointResolverSet 27 { 28 29 /** 30 * Will attempt to invoke the component by looping through all {@link org.mule.api.model.EntryPointResolver} instances registered on this set until 31 * a match is found 32 * @param component the component to invoke 33 * @param context the current event context, this is used to figure out which method to call on the component 34 * @return the result of the invocation 35 * @throws Exception if the invocation itself or an {@link EntryPointResolver} fails 36 */ 37 Object invoke(Object component, MuleEventContext context) throws Exception; 38 39 /** 40 * Will add a resolver to the list of resolvers to invoke on a compoent. 41 * Implementations must maintain an ordered list of resolvers 42 * 43 * @param resolver the resolver to add 44 */ 45 void addEntryPointResolver(EntryPointResolver resolver); 46 47 /** 48 * Removes a resolver from the list 49 * 50 * @param resolver the resolver to remove 51 * @return true if the resolver was found and removed from the list 52 */ 53 boolean removeEntryPointResolver(EntryPointResolver resolver); 54 55 }