org.jpos.iso
Class ISOAmountFieldPackager

java.lang.Object
  org.jpos.iso.ISOFieldPackager
      org.jpos.iso.ISOAmountFieldPackager

Direct Known Subclasses:

IFA_AMOUNT, IFE_AMOUNT

public class ISOAmountFieldPackager
extends ISOFieldPackager

Version:

$Revision$ $Date$

Author:

joconnor

Field Summary

Fields inherited from class org.jpos.iso.ISOFieldPackager

pad

Constructor Summary

ISOAmountFieldPackager()
Constructs a default ISOAmountFieldPackager.

ISOAmountFieldPackager(int maxLength, String description, Padder padder, Interpreter interpreter, Prefixer prefixer)
Creates an ISOAmountFieldPackager.

ISOAmountFieldPackager(Padder padder, Interpreter interpreter, Prefixer prefixer)
Constructs an ISOAmountFieldPackager with a specific Padder, Interpreter and Prefixer.

Method Summary

protected void	checkLength(int len, int maxLength) Checks the length of the data against the maximum, and throws an IllegalArgumentException.
int	getMaxPackedLength() Returns the prefixer's packed length and the interpreter's packed length.
byte[]	pack(ISOComponent c) Packs the component into a byte[].
void	setInterpreter(Interpreter interpreter) Sets the Interpreter.
void	setPadder(Padder padder) Sets the Padder.
void	setPrefixer(Prefixer prefixer) Sets the length prefixer.
int	unpack(ISOComponent c, byte[] b, int offset) Unpacks the byte array into the component.
void	unpack(ISOComponent c, InputStream in) Unpack the input stream into the component.

Methods inherited from class org.jpos.iso.ISOFieldPackager

createComponent, getDescription, getLength, pack, readBytes, setDescription, setLength, setPad

Methods inherited from class java.lang.Object

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

Constructor Detail

ISOAmountFieldPackager

public ISOAmountFieldPackager(int maxLength,
                              String description,
                              Padder padder,
                              Interpreter interpreter,
                              Prefixer prefixer)

Creates an ISOAmountFieldPackager.

Parameters:

maxLength - The maximum length of the field in characters or bytes depending on the datatype.

description - The description of the field. For human readable output.

padder - The type of padding used.

interpreter - The interpreter used to encode the field.

prefixer - The type of length prefixer used to encode this field.

ISOAmountFieldPackager

public ISOAmountFieldPackager()

Constructs a default ISOAmountFieldPackager. There is no padding, no length prefix and a literal interpretation. The set methods must be called to make this ISOAmountFieldPackager useful.

ISOAmountFieldPackager

public ISOAmountFieldPackager(Padder padder,
                              Interpreter interpreter,
                              Prefixer prefixer)

Constructs an ISOAmountFieldPackager with a specific Padder, Interpreter and Prefixer. The length and description should be set with setLength() and setDescription methods.

Parameters:

padder - The type of padding used.

interpreter - The interpreter used to encode the field.

prefixer - The type of length prefixer used to encode this field.

Method Detail

setPadder

public void setPadder(Padder padder)

Sets the Padder.

Parameters:

padder - The padder to use during packing and unpacking.

setInterpreter

public void setInterpreter(Interpreter interpreter)

Sets the Interpreter.

Parameters:

interpreter - The interpreter to use in packing and unpacking.

setPrefixer

public void setPrefixer(Prefixer prefixer)

Sets the length prefixer.

Parameters:

prefixer - The length prefixer to use during packing and unpacking.

getMaxPackedLength

public int getMaxPackedLength()

Returns the prefixer's packed length and the interpreter's packed length.

Specified by:

getMaxPackedLength in class ISOFieldPackager

See Also:

ISOFieldPackager.getMaxPackedLength()

pack

public byte[] pack(ISOComponent c)
            throws ISOException

Packs the component into a byte[].

Specified by:

pack in class ISOFieldPackager

Parameters:

c - - a component

Returns:

packed component

Throws:

ISOException

unpack

public int unpack(ISOComponent c,
                  byte[] b,
                  int offset)
           throws ISOException

Unpacks the byte array into the component.

Specified by:

unpack in class ISOFieldPackager

Parameters:

c - The component to unpack into.

b - The byte array to unpack.

offset - The index in the byte array to start unpacking from.

Returns:

The number of bytes consumed unpacking the component.

Throws:

ISOException

unpack

public void unpack(ISOComponent c,
                   InputStream in)
            throws IOException,
                   ISOException

Unpack the input stream into the component.

Overrides:

unpack in class ISOFieldPackager

Parameters:

c - The Component to unpack into.

in - Input stream where the packed bytes come from.

Throws:

IOException - Thrown if there's a problem reading the input stream.

ISOException

checkLength

protected void checkLength(int len,
                           int maxLength)
                    throws IllegalArgumentException

Checks the length of the data against the maximum, and throws an IllegalArgumentException. This is designed to be called from field Packager constructors and the setLength() method.

Parameters:

len - The length of the data for this field packager.

maxLength - The maximum length allowed for this type of field packager. This depends on the prefixer that is used.

Throws:

IllegalArgumentException - If len > maxLength.