/* * 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. */ /* * $Id: ObjectFactory.java 468637 2006-10-28 06:51:02Z minchau $ */ package org.apache.xalan.extensions; /** * This class is duplicated for each JAXP subpackage so keep it in sync. * It is package private and therefore is not exposed as part of the JAXP * API. *

* This code is designed to implement the JAXP 1.1 spec pluggability * feature and is designed to run on JDK version 1.1 and * later, and to compile on JDK 1.2 and onward. * The code also runs both as part of an unbundled jar file and * when bundled as part of the JDK. *

* This class was moved from the javax.xml.parsers.ObjectFactory * class and modified to be used as a general utility for creating objects * dynamically. * * @version $Id: ObjectFactory.java 468637 2006-10-28 06:51:02Z minchau $ */ class ObjectFactory { /** * Figure out which ClassLoader to use. For JDK 1.2 and later use * the context ClassLoader. */ static ClassLoader findClassLoader() throws ConfigurationError { // BEGIN android-changed // the context class loader is always sufficient return Thread.currentThread().getContextClassLoader(); // END android-changed } // findClassLoader():ClassLoader /** * Find a Class using the specified ClassLoader */ static Class findProviderClass(String className, ClassLoader cl, boolean doFallback) throws ClassNotFoundException, ConfigurationError { //throw security exception if the calling thread is not allowed to access the //class. Restrict the access to the package classes as specified in java.security policy. SecurityManager security = System.getSecurityManager(); try{ if (security != null){ final int lastDot = className.lastIndexOf("."); String packageName = className; if (lastDot != -1) packageName = className.substring(0, lastDot); security.checkPackageAccess(packageName); } }catch(SecurityException e){ throw e; } Class providerClass; if (cl == null) { // XXX Use the bootstrap ClassLoader. There is no way to // load a class using the bootstrap ClassLoader that works // in both JDK 1.1 and Java 2. However, this should still // work b/c the following should be true: // // (cl == null) iff current ClassLoader == null // // Thus Class.forName(String) will use the current // ClassLoader which will be the bootstrap ClassLoader. providerClass = Class.forName(className); } else { try { providerClass = cl.loadClass(className); } catch (ClassNotFoundException x) { if (doFallback) { // Fall back to current classloader ClassLoader current = ObjectFactory.class.getClassLoader(); if (current == null) { providerClass = Class.forName(className); } else if (cl != current) { cl = current; providerClass = cl.loadClass(className); } else { throw x; } } else { throw x; } } } return providerClass; } // // Classes // /** * A configuration error. */ static class ConfigurationError extends Error { static final long serialVersionUID = 8564305128443551853L; // // Data // /** Exception. */ private Exception exception; // // Constructors // /** * Construct a new instance with the specified detail string and * exception. */ ConfigurationError(String msg, Exception x) { super(msg); this.exception = x; } // (String,Exception) // // Public methods // /** Returns the exception associated to this error. */ Exception getException() { return exception; } // getException():Exception } // class ConfigurationError } // class ObjectFactory