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Use the delegate pattern?

Bhavee Abhilash
Greenhorn

Joined: Jan 20, 2009
Posts: 3
I have got 2 major entities which undertakes multiple functions.

Class X - calls Class X1 --> X2 --> X3--> X4

Class Y - Calls Class Y1, --> Y2 -->Y3 --->Y4

(Where 1 is posting to Queues and 2,3,4 are separate classes representing some major functions)

Am using Spring - where all these are inter-twined using IOC principles. So when X is invoked, it completes all tasks till X4 and then moves to task Y.

However my requirement says - once X1 is called, Y to be invoked immediately . X2,X3,X4 may happen parallel while B is in operation.

Since there is no "easy" options (within my limited experience) in Spring to invoke parallel invocation of X and Y beans, I was wondering to have some sort of pattern like Delegate can help me to resolve this.

For eg : So X pushes to message to MQ.. While MQ-listener (X2) takes over the rest of the job, Y is invoked immediately.

What would be the best solution I can apply? Any suggestions / Feedback - would be highly appreciated.

Thanks

Abhilash
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: Use the delegate pattern?
 
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