its.backbone.frame
Class ItsData

java.lang.Object
  its.backbone.frame.ItsData

public abstract class ItsData

extends java.lang.Object

ItsData describes the operations that ITS data types should implement. In addition to implementing the abstract methods, your subclass should be constructable from both an ItsInputStream and from a byte array.

Version:

$Id: ItsData.java,v 1.7 1998/02/13 21:39:46 kint Exp $

Author:

Rick Kint

Constructor Summary

ItsData()

Method Summary

abstract int	getNetworkSize() Return the length in bytes of this object when it is put into network format.
void	read(byte[] bytes) Read the instance from a byte array.
abstract void	read(ItsInputStream in) Reads the instance from an ItsInputStream.
byte[]	toByteArray() Produce a byte array representation of the instance.
abstract void	write(ItsOutputStream out) Write the instance to an ItsOutputStream.

Methods inherited from class java.lang.Object

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

Constructor Detail

ItsData

public ItsData()

Method Detail

read

public abstract void read(ItsInputStream in)
                   throws java.io.IOException,
                          ItsException

Reads the instance from an ItsInputStream.

Parameters:

in - the ItsInputStream from which to read.

Throws:

java.io.IOException - io error

ItsException - its exception

read

public void read(byte[] bytes)
          throws java.io.IOException,
                 ItsException

Read the instance from a byte array. This is not abtract, it is just a wrapper around the read(ItsInputStream) method.

Parameters:

bytes - the byte array from which to read.

Throws:

java.io.IOException - io error

ItsException - its exception

write

public abstract void write(ItsOutputStream out)
                    throws java.io.IOException

Write the instance to an ItsOutputStream.

Parameters:

out - the ItsOutputStream to which to write

Throws:

java.io.IOException

toByteArray

public byte[] toByteArray()

Produce a byte array representation of the instance. This will usually take the form

getNetworkSize

public abstract int getNetworkSize()

Return the length in bytes of this object when it is put into network format. For atomic structures this will be a constant, for composites this should call getNetworkSize() for all components