| /* |
| * Copyright (c) 1998, 2021 Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 1998, 2018 IBM Corporation. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| // 08/29/2016 Jody Grassel |
| // - 500441: Eclipselink core has System.getProperty() calls that are not potentially executed under doPriv() |
| package org.eclipse.persistence.platform.xml; |
| |
| import java.security.AccessController; |
| import java.security.PrivilegedActionException; |
| |
| import org.eclipse.persistence.internal.security.PrivilegedAccessHelper; |
| import org.eclipse.persistence.internal.security.PrivilegedGetClassLoaderForClass; |
| import org.eclipse.persistence.internal.security.PrivilegedNewInstanceFromClass; |
| |
| public class XMLPlatformFactory { |
| public static final String XML_PLATFORM_PROPERTY = "eclipselink.xml.platform"; |
| public static final String XDK_PLATFORM_CLASS_NAME = "org.eclipse.persistence.platform.xml.xdk.XDKPlatform"; |
| public static final String JAXP_PLATFORM_CLASS_NAME = "org.eclipse.persistence.platform.xml.jaxp.JAXPPlatform"; |
| private static XMLPlatformFactory instance; |
| private Class<? extends XMLPlatform> xmlPlatformClass; |
| |
| private XMLPlatformFactory() { |
| super(); |
| } |
| |
| /** |
| * INTERNAL: |
| * Return the singleton instance of XMLPlatformContext. |
| * @return the the singleton instance of XMLPlatformContext. |
| */ |
| public static XMLPlatformFactory getInstance() throws XMLPlatformException { |
| if (null == instance) { |
| instance = new XMLPlatformFactory(); |
| } |
| return instance; |
| } |
| |
| /** |
| * INTERNAL: |
| * Return the implementation class for the XMLPlatform. |
| * @return the implementation class for the XMLPlatform. |
| */ |
| public Class<? extends XMLPlatform> getXMLPlatformClass() throws XMLPlatformException { |
| if (null != xmlPlatformClass) { |
| return xmlPlatformClass; |
| } |
| |
| String newXMLPlatformClassName = PrivilegedAccessHelper.getSystemProperty(XML_PLATFORM_PROPERTY); |
| if (null == newXMLPlatformClassName) { |
| newXMLPlatformClassName = JAXP_PLATFORM_CLASS_NAME; |
| } |
| |
| try { |
| ClassLoader classLoader = null; |
| if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()) { |
| try { |
| classLoader = AccessController.doPrivileged(new PrivilegedGetClassLoaderForClass(this.getClass())); |
| } catch (PrivilegedActionException ex){ |
| throw (RuntimeException) ex.getCause(); |
| } |
| } else { |
| classLoader = PrivilegedAccessHelper.getClassLoaderForClass(this.getClass()); |
| } |
| // Loader may be null if the class was loaded by the root loader in some JVM's/configs. |
| if (classLoader == null) { |
| classLoader = Thread.currentThread().getContextClassLoader(); |
| } |
| if (classLoader == null) { |
| classLoader = ClassLoader.getSystemClassLoader(); |
| } |
| @SuppressWarnings({"unchecked"}) |
| Class<? extends XMLPlatform> newXMLPlatformClass = (Class<? extends XMLPlatform>) classLoader.loadClass(newXMLPlatformClassName); |
| setXMLPlatformClass(newXMLPlatformClass); |
| return xmlPlatformClass; |
| } catch (ClassNotFoundException e) { |
| throw XMLPlatformException.xmlPlatformClassNotFound(newXMLPlatformClassName, e); |
| } |
| } |
| |
| /** |
| * PUBLIC: |
| * Set the implementation of XMLPlatform. |
| */ |
| public void setXMLPlatformClass(Class<? extends XMLPlatform> xmlPlatformClass) { |
| this.xmlPlatformClass = xmlPlatformClass; |
| } |
| |
| /** |
| * INTERNAL: |
| * Return the XMLPlatform based on the toplink.xml.platform System property. |
| * @return an instance of XMLPlatform |
| */ |
| public XMLPlatform getXMLPlatform() throws XMLPlatformException { |
| try { |
| if (PrivilegedAccessHelper.shouldUsePrivilegedAccess()){ |
| try{ |
| return AccessController.doPrivileged(new PrivilegedNewInstanceFromClass<>(getXMLPlatformClass())); |
| }catch (PrivilegedActionException ex){ |
| throw (RuntimeException) ex.getCause(); |
| } |
| }else{ |
| return PrivilegedAccessHelper.newInstanceFromClass(getXMLPlatformClass()); |
| |
| } |
| } catch (ReflectiveOperationException e) { |
| throw XMLPlatformException.xmlPlatformCouldNotInstantiate(getXMLPlatformClass().getName(), e); |
| } |
| } |
| } |