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/*******************************************************************************
* 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.
}
}
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