All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.eclipse.osgi.internal.framework.XMLParsingServiceFactory Maven / Gradle / Ivy

Go to download

AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

There is a newer version: 1.9.22.1
Show newest version
/*******************************************************************************
 * 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.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;
import org.osgi.framework.Bundle;
import org.osgi.framework.ServiceFactory;
import org.osgi.framework.ServiceRegistration;
import org.osgi.framework.wiring.BundleWiring;

class XMLParsingServiceFactory implements ServiceFactory {
	private final boolean isSax;
	private final boolean setTccl;

	public XMLParsingServiceFactory(boolean isSax, boolean setTccl) {
		this.isSax = isSax;
		this.setTccl = setTccl;
	}

	@Override
	public Object getService(Bundle bundle, ServiceRegistration 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) {
			SAXParserFactory factory = SAXParserFactory.newInstance();
			try {
				// ignore DOCTYPE:
				factory.setFeature("http://xml.org/sax/features/external-general-entities", false); //$NON-NLS-1$
				factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false); //$NON-NLS-1$
				factory.setFeature("http://apache.org/xml/features/nonvalidating/load-external-dtd", false); //$NON-NLS-1$
			} catch (Exception e) {
				throw new IllegalStateException(e);
			}
			return factory;
		}
		DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
		try {
			// completely disable external entities declarations:
			factory.setFeature("http://xml.org/sax/features/external-general-entities", false); //$NON-NLS-1$
			factory.setFeature("http://xml.org/sax/features/external-parameter-entities", false); //$NON-NLS-1$
		} catch (ParserConfigurationException e) {
			throw new IllegalStateException(e.getMessage(), e);
		}
		return factory;
	}

	@Override
	public void ungetService(Bundle bundle, ServiceRegistration registration, Object service) {
		// Do nothing.
	}
} 















© 2015 - 2024 Weber Informatics LLC | Privacy Policy