pt.lsts.imc.net

Class IMCFragmentHandler

java.lang.Object

pt.lsts.imc.net.IMCFragmentHandler

public class IMCFragmentHandler
extends java.lang.Object

This class is used to split / reassemble any IMC message to/from MessagePart messages

Author:

zp

Constructor Summary

Constructors

Constructor and Description
IMCFragmentHandler(IMCDefinition definitions)

Method Summary

Modifier and Type	Method and Description
MessagePart[]	fragment(IMCMessage message, int maxFragLength) Fragment a message into smaller MessagePart's
IMCMessage	reassemble(java.util.List<MessagePart> parts) Given a list of message fragments try to reassemble the fragments into an IMCMessage
IMCMessage	setFragment(MessagePart fragment) Add an incoming fragment

Methods inherited from class java.lang.Object

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

Constructor Detail

IMCFragmentHandler

public IMCFragmentHandler(IMCDefinition definitions)

Method Detail

setFragment

public IMCMessage setFragment(MessagePart fragment)

Add an incoming fragment

Parameters:

fragment - The fragment to add to the list of incoming fragments

Returns:

The resulting assembled message if this was the last fragment required to build it or null if this is not the last fragment.

reassemble

public IMCMessage reassemble(java.util.List<MessagePart> parts)
                      throws java.lang.Exception

Given a list of message fragments try to reassemble the fragments into an IMCMessage

Parameters:

parts - The fragments to process

Returns:

The resulting assembled message

Throws:

java.lang.Exception - In case the fragments do not result in a valid message

fragment

public MessagePart[] fragment(IMCMessage message,
                              int maxFragLength)
                       throws java.lang.Exception

Fragment a message into smaller MessagePart's

Parameters:

message - The message to be fragmented

maxFragLength - The maximum size of any generated MessagePart. Must be greater than 25.

Returns:

A List of messages containing fragments of the original message

Throws:

java.lang.Exception - In case the message cannot be fragmented