Java tutorial
/** * This file is part of JEMMA - http://jemma.energy-home.org * (C) Copyright 2013 Telecom Italia (http://www.telecomitalia.it) * * JEMMA is free software: you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License (LGPL) version 3 * or later as published by the Free Software Foundation, which accompanies * this distribution and is available at http://www.gnu.org/licenses/lgpl.html * * JEMMA is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License (LGPL) for more details. * */ package org.energy_home.jemma.ah.internal.greenathome; import java.util.Dictionary; import java.util.HashMap; import java.util.Hashtable; import java.util.Iterator; import java.util.Map; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceReference; import org.osgi.service.device.Driver; import org.osgi.util.tracker.ServiceTracker; import org.osgi.util.tracker.ServiceTrackerCustomizer; public class Configurator implements Driver, ServiceTrackerCustomizer { private BundleContext bc; private HashMap trackedDevices = new HashMap(); private static final Log log = LogFactory.getLog(Configurator.class); public void activate(BundleContext bc, Map props) { this.bc = bc; } public String attach(ServiceReference s) throws Exception { ServiceTracker deviceTracker = new ServiceTracker(this.bc, s, this); deviceTracker.open(); trackedDevices.put(s, deviceTracker); return null; } public int match(ServiceReference arg0) throws Exception { return 10; } public Object addingService(ServiceReference sr) { return sr; } public void modifiedService(ServiceReference sr, Object arg1) { log.debug("service modified"); Dictionary props = this.getServiceProperties(sr); } private Dictionary getServiceProperties(ServiceReference sr) { String[] keys = sr.getPropertyKeys(); Dictionary props = new Hashtable(); for (int i = 0; i < keys.length; i++) { props.put(keys[i], sr.getProperty(keys[i])); } return props; } public void removedService(ServiceReference sr, Object arg1) { log.debug("Service has been removed"); trackedDevices.remove(sr); } public void getPendingDevices() { for (Iterator it = trackedDevices.values().iterator(); it.hasNext();) { ServiceReference sr = (ServiceReference) it.next(); } } }