tlvbyte.java

smpp 源代码

/*
 * Copyright (c) 1996-2001
 * Logica Mobile Networks Limited
 * All rights reserved.
 *
 * This software is distributed under Logica Open Source License Version 1.0
 * ("Licence Agreement"). You shall use it and distribute only in accordance
 * with the terms of the License Agreement.
 *
 */
package com.logica.smpp.pdu.tlv;

import com.logica.smpp.util.ByteBuffer;
import com.logica.smpp.util.NotEnoughDataInByteBufferException;
import com.logica.smpp.pdu.ValueNotSetException;
import com.logica.smpp.pdu.tlv.WrongLengthException;

/**
 * @author Logica Mobile Networks SMPP Open Source Team
 * @version 1.0, 11 Jun 2001
 */

public class TLVByte extends TLV
{
    private byte value = 0;
    
    public TLVByte()
    {
        super(1,1);
    }
    
    public TLVByte(short p_tag)
    {
        super(p_tag,1,1);
    }
    
    public TLVByte(short p_tag, byte p_value)
    {
        super(p_tag,1,1);
        value = p_value;
        markValueSet();
    }
    
    protected void setValueData(ByteBuffer buffer)
    throws TLVException
    {
        checkLength(buffer);
        try {
            value = buffer.removeByte();
        } catch (NotEnoughDataInByteBufferException e) {
            // can't happen as the size is already checked by checkLength()
        }
        markValueSet();
    }
    
    protected ByteBuffer getValueData()
    throws ValueNotSetException
    {
        ByteBuffer valueBuf = new ByteBuffer();
        valueBuf.appendByte(getValue());
        return valueBuf;
    }

    public void setValue(byte p_value)
    {
        value = p_value;
        markValueSet();
    }

    public byte getValue()
    throws ValueNotSetException
    {
        if (hasValue()) {
            return value;
        } else {
            throw new ValueNotSetException();
        }
    }
    
    public String debugString()
    {        
        String dbgs = "(byte: ";
        dbgs += super.debugString();
        dbgs += value;
        dbgs += ") ";
        return dbgs;
    }
    
}