| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.felix.servicebinder.impl; |
| |
| import org.apache.felix.servicebinder.architecture.DependencyChangeEvent; |
| import org.apache.felix.servicebinder.architecture.InstanceChangeEvent; |
| import org.apache.felix.servicebinder.architecture.ServiceBinderListener; |
| |
| /** |
| * |
| * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a> |
| */ |
| public class ArchitectureEventMulticaster implements ServiceBinderListener |
| { |
| /** |
| * |
| * @uml.property name="a" |
| * @uml.associationEnd multiplicity="(0 1)" |
| */ |
| protected ServiceBinderListener a; |
| |
| /** |
| * |
| * @uml.property name="b" |
| * @uml.associationEnd multiplicity="(0 1)" |
| */ |
| protected ServiceBinderListener b; |
| |
| protected ArchitectureEventMulticaster(ServiceBinderListener a, ServiceBinderListener b) |
| { |
| this.a = a; |
| this.b = b; |
| } |
| |
| public void dependencyChanged(DependencyChangeEvent e) |
| { |
| a.dependencyChanged(e); |
| b.dependencyChanged(e); |
| } |
| |
| public void instanceReferenceChanged(InstanceChangeEvent e) |
| { |
| a.instanceReferenceChanged(e); |
| b.instanceReferenceChanged(e); |
| } |
| |
| public static ServiceBinderListener add(ServiceBinderListener a, ServiceBinderListener b) |
| { |
| if (a == null) |
| return b; |
| else if (b == null) |
| return a; |
| else |
| return new ArchitectureEventMulticaster(a, b); |
| } |
| |
| public static ServiceBinderListener remove(ServiceBinderListener a, ServiceBinderListener b) |
| { |
| if ((a == null) || (a == b)) |
| return null; |
| else if (a instanceof ArchitectureEventMulticaster) |
| return add (remove (((ArchitectureEventMulticaster) a).a, b),remove (((ArchitectureEventMulticaster) a).b, b)); |
| else |
| return a; |
| } |
| } |