Invalidate on output node

Hi guys,
I try to delete all data from my table using the method invalidate on the output node.
Nothing happens. If I do the same for the root node then all data get deleted as expected.
My question: why does output node stay the same after applying invalide()?
What is the source code for invalidate()?
What does 'validate()' do?
By the way, to clean my table I just used 'removeElement()' on the root node.
and then initialized my Bapi object
thank you for your help, as always.
Regards
yuval

Hi Yuval,
Invalidate works in two different ways:
1) In case of Model Node: It will reinitialize it to the initial data of the modeled node. It will not delete the data instead it will take it back to the initial state in whichmodel was execuated and it has some values.
2) In case of Value Node. It will again reinitialize the data. However there was no data in the value node initially therefore it behaves as the delete functionality for the value node.
Have a llok to the Java Doc as well:
 * With this method the node will be invalidated. It clears its element list
 * and calls the supply function again when asked for an element. A mapped
 * node passes this request to its origin and thus invalidates this one.
 * 
 * Warning: This method is not allowed within a supply function.
 * @throws WDRuntimeException when called from within a supply function.
You can directly use node.invalidate() to remove the elements of the table if the node binded to the table is the value node. Reason is explained above.
I hope this cleas the issue. If you have any further issues kindly revert back.
Thanks nad Regards,
Pravesh

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Soon after I execute the model in RFC, my Output nodes should get populated with values returned from RFC. What would happen if I issue an Invalidate command on this Output model node right after the execute command.
Will I still be able to access this Output model node ?
Gandolf.

Hi
If you do not want to access the output model node
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Error using Adaptive RFC model.
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Hi All,
I have a problem in invalidating the model output node. Below is the description of my approach and problem statement.
REQUIREMENT: We have had the requirement to develop a custom WD java application in MSS which will fetch the appraisal data for each employee selection.
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Best Wishes
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I am facing a weird problem.
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Could be many things,
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Maybe the nodes aren´t linked through to the view.
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Edited by: J.V. Lebbink on Nov 16, 2008 10:27 AM

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What is a content of XML nodes? I am not sure what you mean by "inserting nodes". Do you mean that you want to display some information over the video?
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Why should i invalidate the output

Generally
We will map Model to Component/Custom Controller and then to View controlller after excuting the bapi
we normally invalidate the ouput
wdContext.nodeOutput_XYZ.invalidate();
why are we doing this?

Murali,
This way we are sending message to IWDNode to drop any existing elements and later use fresh copy form available source (either supply function, or supplying role info in case of RFC model node, or even from "no source" -- i.e. developer himself has to provide code for populating node).
This is necessary because in some cases <node_elements> => <model_objects_collection> link is one-way, so updates in later are not reflected automatically in former.
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http://www.NetWeaverTeam.com

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Hi all,
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Invalidate on output node

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