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Accessing Environment by path in Java compute node

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KIT_INC

Posted: Wed Jan 06, 2010 6:41 am Post subject: Accessing Environment by path in Java compute node

Knight

Joined: 25 Aug 2006
Posts: 589

The input to the JCN has
Environment.data.Mydata = 'WMB';

In the JCN , I tried to access the value by doing

MbMessage env = contact admin.getGlobalEnvironment();
MbElement Mydata = env.getRootElement().getFirstElementByPath("/Environment/data/Mydata");

I also tried
MbElement Mydata = env.getRootElement().getLastChild();

But I am not getting the value.
Can anyone help?

WMBDEV1

Posted: Wed Jan 06, 2010 10:15 am Post subject:

Sentinel

Joined: 05 Mar 2009
Posts: 888
Location: UK

When using:

Code:

env.getRootElement().getLastChild();

Have you tried printing out the name of the node that this points to using the getName() method.

I suspect you need to navigate the tree some more to get to the element you're after.[/code]

kimbert

Posted: Wed Jan 06, 2010 10:51 am Post subject:

Jedi Council

Joined: 29 Jul 2003
Posts: 5542
Location: Southampton

Your environment tree does not have a root element called 'Environment'.
You need:

Code:

MbMessage env = contact admin.getGlobalEnvironment();
MbElement Mydata = env.getRootElement().getFirstElementByPath("/data/Mydata");

KIT_INC

Posted: Fri Jan 08, 2010 8:25 am Post subject:

Knight

Joined: 25 Aug 2006
Posts: 589

Thanks Kimbert, I am now able to pickup the Environment using

MbElement Mydata = env.getRootElement().getFirstElementByPath("/data/Mydata");

Since I need to use the Environment value as a string, so I use

String Mydata1 = Mydata.toString() ;

I found that Mydata1 actually contains
MbElement( type: 3000000 name: FileName value: WMB ) and not just WMB which is my original input to the JCN (Environment.data.Mydata = 'WMB'; ).

I am now using substring function to get WMB out of the Mydata1.

Am I doing it right thing? or there is a better way to do it ?

mqjeff

Posted: Fri Jan 08, 2010 8:50 am Post subject:

Grand Master

Joined: 25 Jun 2008
Posts: 17447

That's the wrong way to get the value of an MBElement object.

Go back to the javadoc.

KIT_INC

Posted: Fri Jan 08, 2010 9:20 am Post subject:

Knight

Joined: 25 Aug 2006
Posts: 589

Hi mqjeff. thanks for stopping me from going down the wrong path. I have it working now.

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