Problem after Model Reimport

[Former Member]

Hi All,

I am desperate. I keep receiving the following error message:

java.lang.IllegalArgumentException: Must not add role listener with role null

    at com.sap.tc.webdynpro.modelimpl.dynamicrfc.DynamicRFCModelClass.registerRoleListener(DynamicRFCModelClass.java:1395)
    at com.sap.tc.webdynpro.progmodel.context.RelationElementList.<init>(ElementList.java:1871)
    at com.sap.tc.webdynpro.progmodel.context.DataNode.createRelationElementList(DataNode.java:201)
    at com.sap.tc.webdynpro.progmodel.context.DataNode.doSetElements(DataNode.java:180)
    at com.sap.tc.webdynpro.progmodel.context.Node.setElements(Node.java:318)
    ... 127 more

I have done 2 things since then:

1. I reimported the model

2. I refactor->renamed some methods

I guess it is the following line of code that causes the exception:

wdContext.currentZ_Read_Infoobject_InputElement().modelObject().execute();

Anyway, I have no clue where the comes from.

Any anybody give me a hint??

THANKS, Johannes

[sureshmandalapu6 · Accepted solution]

Hi Johannes Schnatz ,

Don't rename the methods which are defined by system. If the methods created by are renamed , then no problem. I think there might be some methods changes in Component Controler which reflects the cause.

Since the View Controler is accessing the same method which was there before , it is unable to find that method and giving execption.

Thanks

Suresh

[Former Member · Accepted solution]

I did not make changes to the Component Controller (actually I am using a Custom Controller). It appears that the exception is thown executing this line of code:

wdContext.currentZ_Read_Infoobject_InputElement().modelObject().execute();

So, I guess its a problem related to the model reimport...

Any ideas?

Thanks, Johannes

[Former Member · Accepted solution]

Hi Johannes,

Try restarting J2ee server and then execute your web dynpro application.

Regards,

Gopal

[Former Member · Accepted solution]

I just done this and yes indeed, it helped... Thanks

[sureshmandalapu6 · Accepted solution]

Hi Johannes Schnatz,

I think you might be addes some more classes ( BABI's) when u reimport the model. In that case u need to add the corresponding model in the Componenent Controler.

Just add that class in wDinit() Method. There might be alrady one model class available. u need to add the the one that u have added when u reimport time.

points if useful

Thanks

Suresh

[Former Member]

Hi All,

It may have something to do with AdaptiveRFC Model Metadata not being refreshed after the re-import. Server restart obviously causes the metadata to be re-read anew and thus resolves the issue.

If that is correct then the Metadata Cache has to be invalidated. The procedure for NWCE is described here:

[http://help.sap.com/saphelp_nwce10/helpdata/en/46/a81a68e0933ef0e10000000a1553f7/frameset.htm|http://help.sap.com/saphelp_nwce10/helpdata/en/46/a81a68e0933ef0e10000000a1553f7/frameset.htm]

Cheers!

Michael

[Former Member]

Hi,

I am having the same issue. Restarting the J2ee server fixes the issue everytime, but can anyone explain why this is happening. I would prefer not to restart the j2ee server as there are other teams and applications running in the environment. It seems like this might be a cache issue. Is there are way to clear the cache that would resolve this with out boucning the server?