org.rifidi.edge.adapter.awid.commands.awid2010.AwidReadBlockDataCommand.java Source code

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Here is the source code for org.rifidi.edge.adapter.awid.commands.awid2010.AwidReadBlockDataCommand.java

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/*******************************************************************************
 * Copyright (c) 2014 Transcends, LLC.
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU 
 * General Public License as published by the Free Software Foundation; either version 2 of the 
 * License, or (at your option) any later version. This program 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 General Public License for more details. You 
 * should have received a copy of the GNU General Public License along with this program; if not, 
 * write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 
 * USA. 
 * http://www.gnu.org/licenses/gpl-2.0.html
 *******************************************************************************/
package org.rifidi.edge.adapter.awid.commands.awid2010;

import java.io.IOException;
import java.util.concurrent.TimeoutException;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rifidi.edge.adapter.awid.awid2010.AwidSession;
import org.rifidi.edge.adapter.awid.awid2010.communication.commands.AntennaSourceCommand;
import org.rifidi.edge.adapter.awid.awid2010.communication.commands.AntennaSwitchCommand;
import org.rifidi.edge.adapter.awid.awid2010.communication.commands.Gen2ReadBlockDataCommand;
import org.rifidi.edge.adapter.awid.awid2010.communication.commands.StopCommand;
import org.rifidi.edge.adapter.awid.awid2010.communication.messages.AckMessage;
import org.rifidi.edge.adapter.awid.awid2010.communication.messages.Gen2ReadBlockDataResponse;
import org.rifidi.edge.sensors.ByteMessage;
import org.rifidi.edge.sensors.TimeoutCommand;

/**
 * A command to start reading Gen2Tags. It sends three awid commands. The first
 * two commands turn on antenna reporting. The third is a Gen2 Read Block Data.
 * 
 * @author Kyle Neumeier - kyle@pramari.com
 * @author Daniel Gmez - dgomez@idlinksolutions.com
 * 
 */
public class AwidReadBlockDataCommand extends TimeoutCommand {

    /** Memory bank id. */
    private byte memorybank;
    private static final Log logger = LogFactory.getLog(AwidReadBlockDataCommand.class);

    /**
     * Create a new Awid2010ReadBlockDataCommand command
     * 
     * @param commandID
     *            The ID of the commandconfiguration that produced this
     *            command(The RifidiService)
     * 
     * @param memoryBank
     *            0x00 Reserved bank 0x01 EPC bank 0x02 TID bank 0x03 User bank
     * 
     *            Command: 06 20 0D 02 XX XX Where: 02  to retrieve TID ACK: 00
     *             Command accepted for execution FF  Command received in
     *            error Response23: 12 20 0D 71 00 20 00 80 0F 5A 60 BB 73 66 5B
     *            00 xx xx or 0E 20 0D 71 00 08 20 05 DE A7 90 80 xx xx.
     */
    public AwidReadBlockDataCommand(String commandID, byte memorybank) {
        super(commandID);
        this.memorybank = memorybank;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.rifidi.edge.core.sensors.commands.TimeoutCommand#execute()
     */
    @Override
    protected void execute() throws TimeoutException {
        AntennaSwitchCommand antennaSwitchCommand = new AntennaSwitchCommand(true);
        AntennaSourceCommand antennaCommand = new AntennaSourceCommand();
        Gen2ReadBlockDataCommand command = new Gen2ReadBlockDataCommand(this.memorybank);
        AwidSession session = (AwidSession) super.sensorSession;
        try {
            session.sendMessage(antennaSwitchCommand);
            ByteMessage response = session.getEndpoint().receiveMessage();
            AckMessage ack = new AckMessage(response.message);
            if (!ack.isSuccessful()) {
                logger.warn(antennaSwitchCommand + " was not successful");
            }

            session.sendMessage(antennaCommand);
            response = session.getEndpoint().receiveMessage();
            ack = new AckMessage(response.message);
            if (!ack.isSuccessful()) {
                logger.warn(antennaCommand + " was not successful");
            }
            session.sendMessage(command);
            ack = new AckMessage(response.message);
            if (!ack.isSuccessful()) {
                logger.warn(antennaCommand + " was not successful");
            }
            try {
                response = session.getEndpoint().receiveMessage();
                Gen2ReadBlockDataResponse data = new Gen2ReadBlockDataResponse(response.message, memorybank,
                        super.sensorSession.getSensor().getID());
                // TODO: put data in Esper
            } catch (TimeoutException e) {
                // Ignore timeout exceptions from this command since it only
                // returns once it has seen something.
            }
            session.sendMessage(new StopCommand());
            response = session.getEndpoint().receiveMessage();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }

}