de.intarsys.tools.tlv.common
Class SimpleElement

java.lang.Object
  de.intarsys.tools.tlv.common.TlvElement
      de.intarsys.tools.tlv.common.SimpleElement

public class SimpleElement
extends TlvElement

Implementation of a simple TLV object.

Each SIMPLE-TLV data object shall consist of two or three consecutive fields: a mandatory tag field, a mandatory length field and a conditional value field.

The tag field consists of a single byte encoding a tag number from 1 to 254. The values '00' and 'FF' are invalid for tag fields.

The length field consists of one or three consecutive bytes. - If the first byte is not set to 'FF', then the length field consists of a single byte encoding a number from zero to 254 and denoted N. - If the first byte is set to 'FF', then the length field continues on the subsequent two bytes with any value encoding a number from zero to 65 535 and denoted N.

If N is zero, there is no value field, i.e., the data object is empty. Otherwise (N > 0), the value field consists of N consecutive bytes.

Constructor Summary

SimpleElement(int identifier, byte[] buffer)

SimpleElement(int identifier, byte[] buffer, int offset, int length)

Method Summary

TlvInputStream	createTlvInputStream(byte[] pBytes, int pOffset, int pLength)
byte[]	getEncoded() The whole, encoded TLV element.
boolean	isComposite() true if this element contains TLV data itself.
static SimpleElement	parseElement(byte[] encoded, int offset, int length)
static TlvTemplate	parseTemplate(byte[] encoded, int offset, int length)

Methods inherited from class de.intarsys.tools.tlv.common.TlvElement

getContent, getIdentifier, getLength, getTemplate, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

SimpleElement

public SimpleElement(int identifier,
                     byte[] buffer)

SimpleElement

public SimpleElement(int identifier,
                     byte[] buffer,
                     int offset,
                     int length)

Method Detail

parseElement

public static SimpleElement parseElement(byte[] encoded,
                                         int offset,
                                         int length)
                                  throws IOException

Throws:

IOException

parseTemplate

public static TlvTemplate parseTemplate(byte[] encoded,
                                        int offset,
                                        int length)
                                 throws IOException

Throws:

IOException

createTlvInputStream

public TlvInputStream createTlvInputStream(byte[] pBytes,
                                           int pOffset,
                                           int pLength)
                                    throws TlvFormatException

Specified by:

createTlvInputStream in class TlvElement

Throws:

TlvFormatException

getEncoded

public byte[] getEncoded()

Description copied from class: TlvElement

The whole, encoded TLV element.

Specified by:

getEncoded in class TlvElement

Returns:

The whole, encoded TLV element.

isComposite

public boolean isComposite()

Description copied from class: TlvElement

true if this element contains TLV data itself.

Specified by:

isComposite in class TlvElement

Returns:

true if this element contains TLV data itself.