Java tutorial
/* * Copyright (c) Immotronic, 2012 * * Contributors: * * Lionel Balme (lbalme@immotronic.fr) * Kevin Planchet (kplanchet@immotronic.fr) * * This file is part of ubikit-core, a component of the UBIKIT project. * * This software is a computer program whose purpose is to host third- * parties applications that make use of sensor and actuator networks. * * This software is governed by the CeCILL-C license under French law and * abiding by the rules of distribution of free software. You can use, * modify and/ or redistribute the software under the terms of the CeCILL-C * license as circulated by CEA, CNRS and INRIA at the following URL * As a counterpart to the access to the source code and rights to copy, * "http://www.cecill.info". * * As a counterpart to the access to the source code and rights to copy, * modify and redistribute granted by the license, users are provided only * with a limited warranty and the software's author, the holder of the * economic rights, and the successive licensors have only limited * liability. * * In this respect, the user's attention is drawn to the risks associated * with loading, using, modifying and/or developing or reproducing the * software by the user in light of its specific status of free software, * that may mean that it is complicated to manipulate, and that also * therefore means that it is reserved for developers and experienced * professionals having in-depth computer knowledge. Users are therefore * encouraged to load and test the software's suitability as regards their * requirements in conditions enabling the security of their systems and/or * data to be ensured and, more generally, to use and operate it in the * same conditions as regards security. * * The fact that you are presently reading this means that you have had * knowledge of the CeCILL-C license and that you accept its terms. * * CeCILL-C licence is fully compliant with the GNU Lesser GPL v2 and v3. * */ package fr.immotronic.ubikit.pems.enocean.impl.item.data; import java.util.Date; import org.json.JSONException; import org.json.JSONObject; import org.ubikit.Logger; import org.ubikit.PhysicalEnvironmentItem.JSONValueField; import fr.immotronic.ubikit.pems.enocean.data.EEP0503xxData; import fr.immotronic.ubikit.pems.enocean.impl.LC; public final class EEP0503xxDataImpl implements EEP0503xxData { public final static class SwitchEventImpl implements SwitchEvent { private final Date date; private final SwitchEventType eventType; public SwitchEventImpl(Date date, SwitchEventType eventType) { this.date = date; this.eventType = eventType; } public SwitchEventImpl(JSONObject switchEventJSON) throws JSONException { eventType = SwitchEventType.valueOf(switchEventJSON.getString("eventType")); date = new Date(switchEventJSON.getLong("date")); } public Date getDate() { return date; } public SwitchEventType getSwitchEventType() { return eventType; } public JSONObject toJSON() { try { JSONObject o = new JSONObject(); o.put("eventType", eventType.name()); o.put("date", date.getTime()); return o; } catch (JSONException e) { Logger.error(LC.gi(), this, "toJSON(): An exception while building this JSON object SHOULD never happen. Check the code !", e); return null; } } } //private static DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS"); private final SwitchEvent[] switchEvents; private final Date date; public static EEP0503xxDataImpl constructDataFromRecord(JSONObject lastKnownData) { if (lastKnownData == null) return new EEP0503xxDataImpl(null, null); try { SwitchEvent[] switchEvents = new SwitchEvent[4]; for (int i = 0; i < switchEvents.length; i++) { JSONObject o = lastKnownData.optJSONObject("switchEvent" + i); if (o == null) switchEvents[i] = null; else switchEvents[i] = new SwitchEventImpl(o); } Date date = new Date(lastKnownData.getLong("date")); return new EEP0503xxDataImpl(switchEvents, date); } catch (JSONException e) { Logger.error(LC.gi(), null, "constructDataFromRecord(): An exception while building a sensorData from a JSONObject SHOULD never happen. Check the code !", e); return new EEP0503xxDataImpl(null, null); } } public EEP0503xxDataImpl(SwitchEvent[] switches, Date date) { this.switchEvents = new SwitchEvent[4]; if (switches != null && switches.length == 4) { this.switchEvents[0] = switches[0]; this.switchEvents[1] = switches[1]; this.switchEvents[2] = switches[2]; this.switchEvents[3] = switches[3]; } this.date = date; } public SwitchEvent[] getSwitchEvents() { return switchEvents; } @Override public SwitchEvent getSwitchEvent(int switchNumber) { return switchEvents[switchNumber]; } @Override public Date getDate() { return date; } @Override public JSONObject toJSON() { JSONObject res = new JSONObject(); JSONObject o = null; try { if (date == null) { res.put("noDataAvailable", true); return res; } for (int i = 0; i < switchEvents.length; i++) { if (switchEvents[i] != null) { o = new JSONObject(); o.put(JSONValueField.value.name(), switchEvents[i].getSwitchEventType().name()); o.put(JSONValueField.uiValue.name(), switchEvents[i].getSwitchEventType().name()); o.put(JSONValueField.timestamp.name(), switchEvents[i].getDate().getTime()); res.put("switch" + i, o); } } } catch (JSONException e) { Logger.error(LC.gi(), this, "toJSON(): An exception while building a JSON view of a EnoceanData SHOULD never happen. Check the code !", e); return null; } return res; } @Override public JSONObject getRecordAsJSON() { if (date == null) return null; try { JSONObject o = new JSONObject(); for (int i = 0; i < switchEvents.length; i++) { if (switchEvents[i] != null) { o.put("switchEvent" + i, ((SwitchEventImpl) switchEvents[i]).toJSON()); } } o.put("date", date.getTime()); return o; } catch (JSONException e) { Logger.error(LC.gi(), this, "getRecordAsJSON(): An exception while building a JSON record of a EnoceanData SHOULD never happen. Check the code !", e); return null; } } }