fr.immotronic.ubikit.pems.enocean.impl.item.data.EEP051000DataImpl.java Source code

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Here is the source code for fr.immotronic.ubikit.pems.enocean.impl.item.data.EEP051000DataImpl.java

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/*
 * 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.EEP051000Data;
import fr.immotronic.ubikit.pems.enocean.impl.LC;

public final class EEP051000DataImpl implements EEP051000Data {
    private final HandleState handleState;
    private final Date date;

    public static EEP051000DataImpl constructDataFromRecord(JSONObject lastKnownData) {
        if (lastKnownData == null)
            return new EEP051000DataImpl(HandleState.UNKNOWN, null);

        try {
            HandleState handleState = HandleState.valueOf(lastKnownData.getString("handleState"));
            Date date = new Date(lastKnownData.getLong("date"));

            return new EEP051000DataImpl(handleState, 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 EEP051000DataImpl(HandleState.UNKNOWN, null);
        }
    }

    public EEP051000DataImpl(HandleState handleState, Date date) {
        this.handleState = handleState;
        this.date = date;
    }

    @Override
    public HandleState getHandleState() {
        return handleState;
    }

    @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;
            }

            o = new JSONObject();
            o.put(JSONValueField.value.name(), handleState.name());
            o.put(JSONValueField.uiValue.name(), handleState.name());
            o.put(JSONValueField.timestamp.name(), date.getTime());

            res.put("handleState", 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();
            o.put("handleState", handleState.name());
            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;
        }
    }
}