org.rifidi.emulator.tags.impl.C0G1Tag.java Source code

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Here is the source code for org.rifidi.emulator.tags.impl.C0G1Tag.java

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/*
 *  C0G1Tag.java
 *
 *  Created:   Sep 24, 2007
 *  Project:   RiFidi Emulator - A Software Simulation Tool for RFID Devices
 *              http://www.rifidi.org
 *              http://rifidi.sourceforge.net
 *  Copyright:   Pramari LLC and the Rifidi Project
 *  License:   Lesser GNU Public License (LGPL)
 *              http://www.opensource.org/licenses/lgpl-license.html
 */
package org.rifidi.emulator.tags.impl;

import java.math.BigInteger;

import javax.xml.bind.annotation.XmlRootElement;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.rifidi.emulator.tags.Gen1Tag;
import org.rifidi.emulator.tags.enums.TagConstants;
import org.rifidi.emulator.tags.enums.TagErrors;
import org.rifidi.emulator.tags.enums.TagGen;
import org.rifidi.emulator.tags.exceptions.InvalidMemoryAccessException;

/**
 * Implementation of Class 0 Generation 1 (Read Only Tag)
 * 
 * @author Jochen Mader
 *
 */
/**
 * @author Andreas Huebner - andreas@pramari.com
 *
 */
@XmlRootElement
public class C0G1Tag implements Gen1Tag {

    private static Log logger = LogFactory.getLog(C0G1Tag.class);

    private byte[] id = null;

    /**
     * NoArg Constructor for JAXB.
     */
    public C0G1Tag() {

    }

    public C0G1Tag(BigInteger id) {
        super();
        this.id = id.toByteArray();
    }

    /* (non-Javadoc)
     * @see org.rifidi.tags.Gen1Tag#getTagGeneration()
     */
    public TagGen getTagGeneration() {
        return TagGen.GEN1;
    }

    /* (non-Javadoc)
     * @see org.rifidi.tags.Gen1Tag#getId()
     */
    public byte[] readId() {
        return id;
    }

    /* (non-Javadoc)
     * @see org.rifidi.tags.Gen1Tag#writeId(byte[])
     */
    public void writeId(byte[] id) throws InvalidMemoryAccessException {
        logger.info("C0G1 doesn't support writeId: " + id.toString());
        throw new InvalidMemoryAccessException(TagErrors.TagIsReadOnly);
    }

    /* (non-Javadoc)
     * @see org.rifidi.emulator.tags.Gen1Tag#getId()
     */
    public byte[] getId() {
        return id;
    }

    /* (non-Javadoc)
     * @see org.rifidi.emulator.tags.Gen1Tag#setId(byte[])
     */
    public void setId(byte[] id) throws InvalidMemoryAccessException {
        if (id != null)
            throw new InvalidMemoryAccessException(TagErrors.TagIsReadOnly);
        else
            this.id = id;
    }
}