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/*******************************************************************************
* Copyright (c) 2005, 2018 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.equinox.internal.event;
import org.osgi.framework.*;
import org.osgi.service.event.EventAdmin;
public class Activator implements BundleActivator {
private static final String PROP_USE_DS = "equinox.use.ds"; //$NON-NLS-1$
private ServiceRegistration<EventAdmin> eventAdminService;
private EventComponent eventAdmin;
@Override
public void start(BundleContext bundleContext) throws InvalidSyntaxException {
if (Boolean.valueOf(bundleContext.getProperty(PROP_USE_DS)).booleanValue())
return; // If this property is set we assume DS is being used.
String serviceName = EventAdmin.class.getName();
Filter serviceFilter = bundleContext.createFilter("(objectclass=" + serviceName + ")"); //$NON-NLS-1$ //$NON-NLS-2$
//don't register the service if this bundle has already registered it declaratively
ServiceReference<?>[] refs = bundleContext.getBundle().getRegisteredServices();
if (refs != null) {
for (int i = 0; i < refs.length; i++)
if (serviceFilter.match(refs[i]))
return; // We found a service registered by this bundle already
}
eventAdmin = new EventComponent();
eventAdmin.activate(bundleContext);
eventAdminService = bundleContext.registerService(EventAdmin.class, eventAdmin, null);
}
@Override
public void stop(BundleContext bundleContext) {
if (eventAdmin != null) {
eventAdminService.unregister();
eventAdmin.deactivate(bundleContext);
}
}
}
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