JavolutionActivator.java

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/*
 * Javolution - Java(TM) Solution for Real-Time and Embedded Systems
 * Copyright (C) 2012 - Javolution (http://javolution.org/)
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software is
 * freely granted, provided that this notice is preserved.
 */
package javolution.osgi.internal;
 
import javolution.xml.stream.XMLInputFactory;
import javolution.xml.stream.XMLOutputFactory;
 
import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceRegistration;
 
public class JavolutionActivator implements BundleActivator {
 
    // Services provided by Javolution.
    private ServiceRegistration<XMLInputFactory> xmlInputFactoryRegistration;
    private ServiceRegistration<XMLOutputFactory> xmlOutputFactoryRegistration;
 
    @SuppressWarnings("unchecked")
    public void start(BundleContext bc) throws Exception {
        
        // Activate services trackers.
        OSGiServices.CONCURRENT_CONTEXT_TRACKER.activate(bc);
        OSGiServices.CONFIGURABLE_LISTENER_TRACKER.activate(bc);
        OSGiServices.LOCAL_CONTEXT_TRACKER.activate(bc);
        OSGiServices.LOG_CONTEXT_TRACKER.activate(bc);
        OSGiServices.LOG_SERVICE_TRACKER.activate(bc);
        OSGiServices.SECURITY_CONTEXT_TRACKER.activate(bc);
        OSGiServices.TEXT_CONTEXT_TRACKER.activate(bc);
        OSGiServices.XML_CONTEXT_TRACKER.activate(bc);
        OSGiServices.XML_INPUT_FACTORY_TRACKER.activate(bc);
        OSGiServices.XML_OUTPUT_FACTORY_TRACKER.activate(bc);
        
        // Publish XMLInputFactory/XMLOutputFactory services.
        xmlInputFactoryRegistration = (ServiceRegistration<XMLInputFactory>) bc
                .registerService(XMLInputFactory.class.getName(),
                        new XMLInputFactoryProvider(), null);
        xmlOutputFactoryRegistration = (ServiceRegistration<XMLOutputFactory>) bc
                .registerService(XMLOutputFactory.class.getName(),
                        new XMLOutputFactoryProvider(), null);
 
        // Ensures low latency for real-time classes.
        OSGiServices.initializeRealtimeClasses();
    }
 
    public void stop(BundleContext bc) throws Exception {
        OSGiServices.CONCURRENT_CONTEXT_TRACKER.deactivate(bc);
        OSGiServices.CONFIGURABLE_LISTENER_TRACKER.deactivate(bc);
        OSGiServices.LOCAL_CONTEXT_TRACKER.deactivate(bc);
        OSGiServices.LOG_CONTEXT_TRACKER.deactivate(bc);
        OSGiServices.LOG_SERVICE_TRACKER.deactivate(bc);
        OSGiServices.SECURITY_CONTEXT_TRACKER.deactivate(bc);
        OSGiServices.TEXT_CONTEXT_TRACKER.deactivate(bc);
        OSGiServices.XML_CONTEXT_TRACKER.deactivate(bc);
        OSGiServices.XML_INPUT_FACTORY_TRACKER.deactivate(bc);
        OSGiServices.XML_OUTPUT_FACTORY_TRACKER.deactivate(bc);
 
        xmlInputFactoryRegistration.unregister();
        xmlOutputFactoryRegistration.unregister();   
    }
 
}