Class NullPrefixer

java.lang.Object

org.jpos.iso.NullPrefixer

All Implemented Interfaces:

Prefixer

public class NullPrefixer
extends Object
implements Prefixer

AsciiPrefixer constructs a prefix for ASCII messages.

Field Summary

Fields

Modifier and Type	Field	Description
static final NullPrefixer	INSTANCE	A handy instance of the null prefixer.

Method Summary

Modifier and Type	Method	Description
int	decodeLength(byte[] b, int offset)	Returns -1 meaning there is no length field.
void	encodeLength(int length, byte[] b)	Encodes the field length into the byte array.
int	getPackedLength()	Returns the number of bytes taken up by the length encoding.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

INSTANCE

public static final NullPrefixer INSTANCE

A handy instance of the null prefixer.

Method Details

encodeLength

public void encodeLength(int length,
 byte[] b)

Description copied from interface: Prefixer

Encodes the field length into the byte array.

Specified by:

encodeLength in interface Prefixer

Parameters:

length - the field length to encode

b - the byte array to write the length prefix into

decodeLength

public int decodeLength(byte[] b,
 int offset)

Returns -1 meaning there is no length field.

Specified by:

decodeLength in interface Prefixer

Parameters:

b - the byte array containing the length prefix

offset - the offset in b where the prefix starts

Returns:

the length in chars of the field data to follow this prefix

getPackedLength

public int getPackedLength()

Description copied from interface: Prefixer

Returns the number of bytes taken up by the length encoding.

Specified by:

getPackedLength in interface Prefixer

Returns:

the number of bytes used by the length encoding