java milestone management

[pradeep arum]

Hi all,
I have to think about an architecture where I have to come up with a milestone management code.
I mean my application here has various subsystems, and will be called at a fire of a gateway event like GW_X,GW_Y,GW_Z

Something like
if (GW_X is fired){
// call system X
}

if (GW_Y is fired){
// call system Y
}

if (GW_Z is fired){
// call system Z
}


and a subsystem can call an other subsystems too, depending on the business logic, so when a gateway event fails at some step, we have to start the process from the beginning, I mean it takes lot of effort in debugging and fixing for the production support people, is there something like a MILESTONE RECORDER we can do and save into the database , and start from the last MILESTONE it recorded, So that we dont have to start from scratch.If somebody has an idea/advice/suggestion , I could start thinking about it.when I save a milestone into the database, i need to save an object in XML form, and when I need to read from the database, i need to convert that xml to object and use it .


Thanks
Pradeep

[Nitesh Kant]

Sounds like a persistent (long lived) workflow.

Moving to OO, UML Pattern forum (basically we discuss design there). This does not fit much in distributed java.