File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes OO, Patterns, UML and Refactoring and the fly likes Implementing Command Pattern Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of Java Interview Guide this week in the Jobs Discussion forum!
JavaRanch » Java Forums » Engineering » OO, Patterns, UML and Refactoring
Bookmark "Implementing Command Pattern" Watch "Implementing Command Pattern" New topic

Implementing Command Pattern

Steve Orobec

Joined: May 31, 2005
Posts: 2

I've been reading HFDP.

I'm currently working on a telecoms implementation for a proof of concept
project. This involves writing a simulation for an EMS system to manage a
network element, for example a network switch or router.

The command pattern looks like something I could use for thread management and queueing etc

Question is that I have dozens of diverse objects that model equipment, traffic, housekeeping and so on, each object can have a dozen or so methods.

Would I implement a single "command set" or would I have several
instances of the pattern deployed according to the methods that the command executes.

Thank you in advance

Sathvathsan Sampath
Ranch Hand

Joined: Oct 03, 2000
Posts: 96
This might not answer your question - did you consider jmx to manage your resources?
[ June 08, 2005: Message edited by: Sathvathsan Sampath ]

- Sathvathsan Sampath
Steve Orobec

Joined: May 31, 2005
Posts: 2
hi Sathvathsan

Perhaps I should explain a little of the nature of my task. I'm actually
involved in setting Telecoms standards, eg MTNM, MTOSI so I am attempting
to show how they may be implemented. (This need not necessarily be in Java).
There is also relation to OSS/J in that I could implement OSS/J interfaces

I'm not a developer but tend to work mainly in OSS design but a common
anti-pattern is that designers tend to suffer from legacy or j2ee fever
and the developers often question the low level implementation detail of a
design. If I actually resort to coding myself then I have a better knowledge
of the low level implementation detail for an industrial design

I actually have the objects/methods defined by the standard, its more to do with what is the most efficient way of implementing these (the standard is not prescriptive on the application internals, only the J2EE/CORBA interfaces)

So for example what I am looking for in the command pattern is a way of
executing methods from object EMS() interacting with other objects such
as ManagedElement(), Equipment(), SubnetworkConnection, TerminationPoint(),
Log(), GUI() etc.

Of course I could just leave my commands un-encapsulated

Thanks for the heads-up on JMX, its always nice to know of potentially useful tools

I agree. Here's the link:
subject: Implementing Command Pattern
It's not a secret anymore!