public void start(BundleContext bundleContext) throws Exception {
this.bundleContext = bundleContext;
serviceReference = bundleContext.getServiceReference(Printer.class.getName());
if (serviceReference != null) {
Printer printer = (Printer) bundleContext.getService(serviceReference);
if (printer != null) {
runnablePrinterClient.setPrinterService(printer);
runnablePrinterClient.start();
}
}
bundleContext.addServiceListener(this, "(objectClass=" + Printer.class.getName() + ")");
}
public void stop(BundleContext bundleContext) throws Exception {
runnablePrinterClient.stop();
if (serviceReference != null) {
bundleContext.ungetService(serviceReference);
}
bundleContext.removeServiceListener(this);
}
public void serviceChanged(ServiceEvent serviceEvent) {
switch (serviceEvent.getType()) {
case ServiceEvent.UNREGISTERING:
{
runnablePrinterClient.stop();
bundleContext.ungetService(serviceEvent.getServiceReference());
break;
}
case ServiceEvent.REGISTERED:
{
Printer printer = (Printer) bundleContext.getService(serviceEvent.getServiceReference());
if (printer != null) {
runnablePrinterClient.setPrinterService(printer);
runnablePrinterClient.start();
}
break;
}
}
}
