| /******************************************************************************* |
| * Copyright (c) 2014 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.osgi.internal.framework; |
| |
| import javax.xml.parsers.DocumentBuilderFactory; |
| import javax.xml.parsers.SAXParserFactory; |
| import org.osgi.framework.*; |
| import org.osgi.framework.wiring.BundleWiring; |
| |
| class XMLParsingServiceFactory implements ServiceFactory<Object> { |
| private final boolean isSax; |
| private final boolean setTccl; |
| |
| public XMLParsingServiceFactory(boolean isSax, boolean setTccl) { |
| this.isSax = isSax; |
| this.setTccl = setTccl; |
| } |
| |
| public Object getService(Bundle bundle, ServiceRegistration<Object> registration) { |
| if (!setTccl || bundle == null) |
| return createService(); |
| /* |
| * Set the TCCL while creating jaxp factory instances to the |
| * requesting bundles class loader. This is needed to |
| * work around bug 285505. There are issues if multiple |
| * xerces implementations are available on the bundles class path |
| * |
| * The real issue is that the ContextFinder will only delegate |
| * to the framework class loader in this case. This class |
| * loader forces the requesting bundle to be delegated to for |
| * TCCL loads. |
| */ |
| final ClassLoader savedClassLoader = Thread.currentThread().getContextClassLoader(); |
| try { |
| BundleWiring wiring = bundle.adapt(BundleWiring.class); |
| ClassLoader cl = wiring == null ? null : wiring.getClassLoader(); |
| if (cl != null) |
| Thread.currentThread().setContextClassLoader(cl); |
| return createService(); |
| } finally { |
| Thread.currentThread().setContextClassLoader(savedClassLoader); |
| } |
| } |
| |
| private Object createService() { |
| if (isSax) |
| return SAXParserFactory.newInstance(); |
| return DocumentBuilderFactory.newInstance(); |
| } |
| |
| public void ungetService(Bundle bundle, ServiceRegistration<Object> registration, Object service) { |
| // Do nothing. |
| } |
| } |