1 /* 2 * reserved comment block 3 * DO NOT REMOVE OR ALTER! 4 */ 5 /** 6 * Licensed to the Apache Software Foundation (ASF) under one 7 * or more contributor license agreements. See the NOTICE file 8 * distributed with this work for additional information 9 * regarding copyright ownership. The ASF licenses this file 10 * to you under the Apache License, Version 2.0 (the 11 * "License"); you may not use this file except in compliance 12 * with the License. You may obtain a copy of the License at 13 * 14 * http://www.apache.org/licenses/LICENSE-2.0 15 * 16 * Unless required by applicable law or agreed to in writing, 17 * software distributed under the License is distributed on an 18 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 19 * KIND, either express or implied. See the License for the 20 * specific language governing permissions and limitations 21 * under the License. 22 */ 23 24 package com.sun.org.apache.xml.internal.security.keys.keyresolver; 25 26 // NOTE! This is a duplicate of utils.ClassLoaderUtils with public 27 // modifiers changed to package-private. Make sure to integrate any future 28 // changes to utils.ClassLoaderUtils to this file. 29 final class ClassLoaderUtils { 30 31 private static final com.sun.org.slf4j.internal.Logger LOG = 32 com.sun.org.slf4j.internal.LoggerFactory.getLogger(ClassLoaderUtils.class); 33 ClassLoaderUtils()34 private ClassLoaderUtils() { 35 } 36 37 /** 38 * Load a class with a given name. <p></p> It will try to load the class in the 39 * following order: 40 * <ul> 41 * <li>From Thread.currentThread().getContextClassLoader() 42 * <li>Using the basic Class.forName() 43 * <li>From ClassLoaderUtil.class.getClassLoader() 44 * <li>From the callingClass.getClassLoader() 45 * </ul> 46 * 47 * @param className The name of the class to load 48 * @param callingClass The Class object of the calling object 49 * @throws ClassNotFoundException If the class cannot be found anywhere. 50 */ loadClass(String className, Class<?> callingClass)51 static Class<?> loadClass(String className, Class<?> callingClass) 52 throws ClassNotFoundException { 53 try { 54 ClassLoader cl = Thread.currentThread().getContextClassLoader(); 55 56 if (cl != null) { 57 return cl.loadClass(className); 58 } 59 } catch (ClassNotFoundException e) { 60 LOG.debug(e.getMessage(), e); 61 //ignore 62 } 63 return loadClass2(className, callingClass); 64 } 65 loadClass2(String className, Class<?> callingClass)66 private static Class<?> loadClass2(String className, Class<?> callingClass) 67 throws ClassNotFoundException { 68 try { 69 return Class.forName(className); 70 } catch (ClassNotFoundException ex) { 71 try { 72 if (ClassLoaderUtils.class.getClassLoader() != null) { 73 return ClassLoaderUtils.class.getClassLoader().loadClass(className); 74 } 75 } catch (ClassNotFoundException exc) { 76 if (callingClass != null && callingClass.getClassLoader() != null) { 77 return callingClass.getClassLoader().loadClass(className); 78 } 79 } 80 LOG.debug(ex.getMessage(), ex); 81 throw ex; 82 } 83 } 84 } 85