com.ibm.agletx.patterns
Class Meeting

java.lang.Object
  |
  +--com.ibm.agletx.patterns.Meeting

All Implemented Interfaces:

java.io.Serializable

public final class Meeting

extends java.lang.Object

implements java.io.Serializable

This Meeting class abstracts light synchronization between multiple aglets by using a meeting concept. A meeting is established by creating a meeting object and distribute it among the aglets which suppose to participate in the meeting. A meeting object includes:
1. the meeting place (URL)
2. a meeting identifier
3. an optional list of agletIDs, named colleagues, of aglets which are expected to be presented at the meeting place
4. an optional object (named attachedInfo) describing additional information regarding the meeting (e.g. list or number of participants, minimum number of required participants).

Upon arrival to the meeting, an aglet notifies its arrival via the ready method. As a result all aglets already presented are notified of its arrival by receiving a special message (its kind is that of the meeting ID) with the agletID of this newly arrived aglet.

Version:

1.0 96/12/28

Author:

Yariv Aridor

See Also:

Serialized Form

Constructor Summary

Meeting(java.lang.String place)
A Constructor

Meeting(java.lang.String place, java.util.Vector colleagues)
A Constructor

Method Summary

java.lang.Object	getAttachedInfo()
java.lang.String	getID()
java.lang.String	getPlace()
java.util.Enumeration	ready(Aglet ag) Accepts an aglet to a meeting.
void	setAttachedInfo(java.lang.Object obj)
void	setColleagues(java.util.Vector colleagues)
void	setID(java.lang.String id)

Methods inherited from class java.lang.Object

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

Constructor Detail

Meeting

public Meeting(java.lang.String place)

A Constructor

Parameters:

place - the meeting place.

Meeting

public Meeting(java.lang.String place,
               java.util.Vector colleagues)
        throws AgletException

A Constructor

Parameters:

place - the meeting place.

colleagues - the colleagues

Throws:

AgletException - if colleagues is invalid (should include only AgletID objects)

Method Detail

getAttachedInfo

public java.lang.Object getAttachedInfo()

getID

public java.lang.String getID()

getPlace

public java.lang.String getPlace()

ready

public java.util.Enumeration ready(Aglet ag)
                            throws AgletException

Accepts an aglet to a meeting.

Parameters:

aglet - the arrived aglet.

Returns:

enumeration of the agletID of all presented aglets.

Throws:

AgletException - if wrong meeting place or if any of the colleagues is not presented.

setAttachedInfo

public void setAttachedInfo(java.lang.Object obj)

setColleagues

public void setColleagues(java.util.Vector colleagues)
                   throws AgletException

setID

public void setID(java.lang.String id)