From jlivingood at iaconline.com  Mon Jan 15 13:21:17 2007
From: jlivingood at iaconline.com (James Livingood)
Date: Mon, 15 Jan 2007 11:21:17 -0700
Subject: Simple Question about execute()
Message-ID: <5E39C4594D28CB4B854E6C61FC43690A280B1F@ED.TFMT.IAC>

Hello all,

 

I am new to Cougaar development and am having trouble with a plugin I
created. My plugin simply monitors objects on the blackboard and puts
them into a Microsoft SQL database.

 

I've subscribed to the object I want:

HypothesisSub = (IncrementalSubscription)
getBlackboardService().subscribe(HYPOTHESIS_PRED);

 

And in my execute() I have:

for (Iterator i = HypothesisSub.getAddedCollection().iterator();
i.hasNext();) {

 

which grabs all the information and puts it into MS SQL. 

 

I get information in my MS SQL when I first subscribe, but not when
objects on the blackboard change. Doesn't execute() run every time an
object (that I have a subscription to) change? If not, what do I have to
do?

 

 

Thanks for any information!

 

 

James

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From abramsm at gmail.com  Mon Jan 15 13:26:58 2007
From: abramsm at gmail.com (Matt Abrams)
Date: Mon, 15 Jan 2007 13:26:58 -0500
Subject: Simple Question about execute()
In-Reply-To: <5E39C4594D28CB4B854E6C61FC43690A280B1F@ED.TFMT.IAC>
References: <5E39C4594D28CB4B854E6C61FC43690A280B1F@ED.TFMT.IAC>
Message-ID: <E8AB81F1-E609-401A-BABA-10A17C3D6070@gmail.com>

James -

Your iterator is on the "added" collection.  An subscription will  
invoke the execute method of your plugin when the objects that match  
your predicate are added, changed, or removed.  If you'd like to  
process changed objects as well as added objects then you should have  
another snippet of code like:

> for (Iterator i = HypothesisSub.getChangedCollection().iterator();  
> i.hasNext();) {

Matt

On Jan 15, 2007, at 1:21 PM, James Livingood wrote:

> Hello all,
>
>
>
> I am new to Cougaar development and am having trouble with a plugin  
> I created. My plugin simply monitors objects on the blackboard and  
> puts them into a Microsoft SQL database.
>
>
>
> I?ve subscribed to the object I want:
>
> HypothesisSub = (IncrementalSubscription) getBlackboardService 
> ().subscribe(HYPOTHESIS_PRED);
>
>
>
> And in my execute() I have:
>
> for (Iterator i = HypothesisSub.getAddedCollection().iterator();  
> i.hasNext();) {
>
>
>
> which grabs all the information and puts it into MS SQL.
>
>
>
> I get information in my MS SQL when I first subscribe, but not when  
> objects on the blackboard change. Doesn?t execute() run every time  
> an object (that I have a subscription to) change? If not, what do I  
> have to do?
>
>
>
>
>
> Thanks for any information!
>
>
>
>
>
> James
>
> _______________________________________________
> Cougaar-developers mailing list
> Cougaar-developers at cougaar.org
> http://cougaar.org/mailman/listinfo/cougaar-developers

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From jlivingood at iaconline.com  Mon Jan 29 19:23:36 2007
From: jlivingood at iaconline.com (James Livingood)
Date: Mon, 29 Jan 2007 17:23:36 -0700
Subject: Execute works on getAddedCollection but not getChangedCollection
Message-ID: <5E39C4594D28CB4B854E6C61FC43690A1561FF@ED.TFMT.IAC>

Hello all,
 
I've subscribed to the object I want:

HypothesisSub = (IncrementalSubscription) getBlackboardService().subscribe(HYPOTHESIS_PRED);

 

And in my execute() I have:

for (Iterator i = HypothesisSub.getAddedCollection().iterator(); i.hasNext();) {

// grabs all the information and puts it into MS SQL. 

}

for (Iterator i = HypothesisSub.getChangedCollection().iterator(); i.hasNext();) {

// grab all the data AGAIN and put it into MS SQL

}

 

Why does the getAddedCollection run when the plugin is first started up, but the getChangedCollection does not run when objects that I've subscribed to change/new ones are added/etc?

 

 

Thanks for any hints, information, things to check, etc.

James

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