| /** |
| * 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.cxf.dosgi.common.proxy; |
| |
| import java.lang.reflect.Method; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.osgi.framework.ServiceException; |
| |
| public class ExceptionMapper { |
| private static final String REMOTE_EXCEPTION_TYPE = "REMOTE"; |
| private Map<Method, Set<Class<?>>> exceptionsMap = new HashMap<Method, Set<Class<?>>>(); |
| |
| public ExceptionMapper(Class<?> iType) { |
| introspectTypeForExceptions(iType); |
| } |
| |
| public Throwable mapException(Method m, Throwable ex) throws Throwable { |
| Throwable cause = ex.getCause() == null ? ex : ex.getCause(); |
| Set<Class<?>> excTypes = exceptionsMap.get(m); |
| if (excTypes != null) { |
| for (Class<?> type : excTypes) { |
| if (type.isAssignableFrom(ex.getClass())) { |
| return ex; |
| } |
| if (type.isAssignableFrom(cause.getClass())) { |
| return cause; |
| } |
| } |
| } |
| return new ServiceException(REMOTE_EXCEPTION_TYPE, ex); |
| } |
| |
| private void introspectTypeForExceptions(Class<?> iType) { |
| for (Method m : iType.getDeclaredMethods()) { |
| addExceptions(m); |
| } |
| for (Method m : iType.getMethods()) { |
| addExceptions(m); |
| } |
| } |
| |
| private void addExceptions(Method m) { |
| for (Class<?> excType : m.getExceptionTypes()) { |
| if (Exception.class.isAssignableFrom(excType)) { |
| getCurrentExTypes(m).add(excType); |
| } |
| } |
| } |
| |
| private Set<Class<?>> getCurrentExTypes(Method m) { |
| Set<Class<?>> types = exceptionsMap.get(m); |
| if (types == null) { |
| types = new HashSet<Class<?>>(); |
| exceptionsMap.put(m, types); |
| } |
| return types; |
| } |
| } |