| /* |
| * 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.camel.core.osgi.utils; |
| |
| import java.lang.reflect.Method; |
| |
| import org.osgi.framework.Bundle; |
| import org.osgi.framework.BundleContext; |
| |
| /** |
| * Helper class |
| */ |
| public final class BundleContextUtils { |
| |
| private BundleContextUtils() { |
| } |
| |
| /** |
| * Retrieve the BundleContext that the given class has been loaded from. |
| * |
| * @param clazz the class to find the bundle context from |
| * @return the bundle context or <code>null</code> if it can't be found |
| */ |
| public static BundleContext getBundleContext(Class<?> clazz) { |
| |
| // Ideally we should use FrameworkUtil.getBundle(clazz).getBundleContext() |
| // but that does not exist in OSGi 4.1, so until we upgrade, we keep that one |
| |
| try { |
| ClassLoader cl = clazz.getClassLoader(); |
| Class<?> clClazz = cl.getClass(); |
| Method mth = null; |
| while (clClazz != null) { |
| try { |
| mth = clClazz.getDeclaredMethod("getBundle"); |
| break; |
| } catch (NoSuchMethodException e) { |
| // Ignore |
| } |
| clClazz = clClazz.getSuperclass(); |
| } |
| if (mth != null) { |
| mth.setAccessible(true); |
| return ((Bundle) mth.invoke(cl)).getBundleContext(); |
| } |
| } catch (Throwable t) { |
| // Ignore |
| } |
| |
| return null; |
| } |
| |
| } |