RFC metadata & model instance

Hi,
Could you explain why do we require RFC metadata & model instance in WD adaptive RFC model? What is purpose of these?
Krishna.

hi
Rfc metadata and modeldata logical system destnations to connect to backend systems used in configuration of JCOs .
we configure JCOs in ContentAdmin.
Meta data is the Dictionary data thats why you find Metadata destination in Dictionaries of your project.
Modeldata is the Application data,you can find logical system name of Modeldata in Properties of your Modelclass.
So Model data destination will fetch actual data while metadata destination will contain description of the data.
Regards
sowmya.

Similar Messages

WD Java RFC metadata cache invalidation without recycle JAVA

Since we are in a high availability production system, we cannot recycle or CE instance. There are times were the RFC metdata invalidation does not work and the only things that forces it is a recycle of the CE system.
This is contrary to what SAP has publicized, so is there a process in NWA or a single process (and NOT the server0 process) that we can refresh without stopping and starting the java engine.
Much like Visual Administration is there a single service we can stop and start to ensure the engine stays up and running and available?
Thanks
Weyland Yutani

Hi Weyland ,
did you check the guide ?
Metadata Cache Invalidation for Adaptive RFC Models
http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/10465350-b4f5-2910-61ba-a58282b3b6df
There's a solution in this guide which explains how to proceed to avoid engine restart in case of ARFC.
(I don't know your engine release, but if it is >= 711, then you may welcome this guide as well:
Using an Adaptive RFC 2 Model in Web Dynpro Java
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/50f7192d-2808-2d10-189b-df3fa5f71abf )
I hope this helps.
Best Regards,
Ervin

Logical systems for modeldata and RFC metadata

Hi All,
I want to know how I can display the my own created logical system names under the drop-down menu when i have to select the logical system names for modeldata and rfc metadata. I don't want to them to be written instead i want them to be one of the options in the drop down menu, as we have them in the FLIGHT_LIST_INIT example found in the sample applications and examples.
Thanks in advance
Srikant

Hi,
While creating SLD for your R/3 systems give the desired name of wht u want instead of logical name.
For configuring the same refer the link below :-
http://help.sap.com/saphelp_erp2004/helpdata/en/29/e0b75c2b7d40c5bfbda82e905b701c/frameset.htm
Regards,
guru

Finding "Default Logical System Name Model Instance" in DC Project

Hi,
While Creating an Adaptive RFCModel, one defines the
Default Logical System Name for Model Instance & the
Default Logical System Name for RFCMetadata.
In which file can I find these settings at a later stage in the Project File Structure.
Ofcourse, I can view them in the WedynproContentAdministrator under the Jco Destinations.
But is there anyway to access them in the NWDS?
Regards
MK

Hello MK,
You'll find the Logical System Names of the JCo destinations in the file ".wdproperties" under the project structure.
Bala

Model Instance Vs Model Object

Hi experts
can anyone plz explain me the difference between model instance and model objects. is it necessary to create model instance when dealing with WebService model.
also tell me what do u mean by associating model objects.
plz explain with reference to the following code :
<b>public void wdDoInit() {
//@@begin wdDoInit()
// create a new model instance (1)
model = new EmailAdWSModel();
// create model objects (2, 3)
Request_SendEmail requestMO = new Request_SendEmail(model);
SendEmail emailMO = new SendEmail(model);
// associate model objects (4)
requestMO.setSendEmail(emailMO);
// bind executable model object to context node (5)
wdContext.nodeRequest_SendEmail().bind(requestMO);
//@@end
}</b>
i found this on sample exercises given on sdn:
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/301ff0bb-74ca-2910-fa99-eae392695aad
can any one help me regarding this.
Thanks in advance.

Hi krishnan..,
To be brief , have a clear idea about model i.e., A model contains number of classes inbuilt in it which u could find after importing a model..
You must create an instance to the model to access the classes in the model..
similarly you create objects to the classes in the model to get it referenced..
As u are used to object oriented programming, i hope u may have a good idea about classes and objects..
An object is always an instance of a class..and u can never access a class without creating an object to the class..
as in the coding which u have given..
"model" is an instance of the model called EmailAdWSModel();
then u create objects for the classes inside the model and then u access the attributes by referencing the objects of the class.
hope u would be clear with this concept

RFC Adaptive Model,JCO destinations error

HI,
I created the tutorial application to get Flight List using RFC adaptive model.
I created the JCO destinations in web dynpro content administrator after configuring the SLD (after many problems though ).
Our Server is Web AS 6.4 ABAP + JAVA ,but no R/3 modules installed.
WD_FLIGHTLIST_MODELDATA_DEST-type application--single server connection
WD_FLIGHTLIST_RFC_METADATA_DEST-type Dictionary-load balanced
The JCo destinations status shows green.
The test for WD_FLIGHTLIST_MODELDATA_DEST is succesful but the test for WD_FLIGHTLIST_RFC_METADATA_DEST fails with the error:[code]
com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=nwserver GROUP=PUBLIC R3NAME=NWS MSSERV=sapmsNWS PCS=1 LOCATION CPIC (TCP/IP) on local host with Unicode ERROR Group PUBLIC not found TIME Thu Nov 10 18:24:23 2005 RELEASE 640 COMPONENT LG VERSION 5 RC -6 MODULE lgxx.c LINE 3515 DETAIL LgIGroup COUNTER 2 [/code]
The ping fails and if i test it again,i get another error
[code]com.sap.mw.jco.JCO$Exception: (102) RFC_ERROR_COMMUNICATION: Connect to message server host failed Connect_PM TYPE=B MSHOST=nwserver GROUP=PUBLIC R3NAME=NWS MSSERV=sapmsNWS PCS=1 ERROR Group PUBLIC not found TIME Thu Nov 10 18:29:13 2005 RELEASE 640 COMPONENT LG VERSION 5 RC -6 MODULE lgxx.c LINE 3515 DETAIL LgIGroup COUNTER 1 [/code]
What is wrong?Any more steps required?
If i try to edit it,the type is still the same-Application with single connection.
How can i change it?Do i need to change it to type Dictionary in the first place? How to proceed.
Please guide.
Regards,
Siddhartha
Message was edited by: Siddhartha Jain
Message was edited by: Siddhartha Jain

hi Siddhartha,
You have to configure PUBLIC group using SMLG transaction
check these links out
http://help.sap.com/saphelp_nw04/helpdata/en/28/1c623c44696069e10000000a11405a/content.htm
hope this helps you
Regards
Rohit

RFC Adaptive Model Questions

Hi all,
I have some questions about RFC Adaptive Model in Web Dynpro:
1)Can I add a new RFC into a Model without recreating that?
2)Theres a way to WebDynpro dont lost de mapped attributes like an input field thats mapped to an import parameter of a RFC? Because all the times that I change the Model and recreate that, my application lost the link between Controller and View and its generate a lot of work to redo this manually.
Thanks,
Manoel

About RFC models, if I have this schema:
RFCModels
-- ZRFC_A
-- ZRFC_B
-- ZRFC_C
If I want to add a new RFC to this model (ZRFC_D), I can't do that. In this case I want to create a new Model with the ZRFC_D right?
When I import a Web Services Model and I have made some changes in Web Services, I don't have a Re-import option enabled like RCC models. What can I do in this case?
Thanks,
Manoel

Invalidating rfc metadata cache

hi all,
i want to invalidate rfc metada cache through adaptive rfc metada cache invalidation tool in webdynpro console..
can any one plz suggest me the path to find that.
thanks in advane
seshagiri

hi juan,
it was very helpful solution to our problem that is invalidating rfc metadata.
after i gone through the pdf,i found it is for NW04S or 7.0 SP12
but v r using SP09
so i beleive upgraing is the only solution.right
or can u suggest any other solution.
thanks in advance
seshagiri

Error in Adaptive RFC 2 Model

Hi Expert,
I am developing one webdynpro application in CE 7.1.1 (EHP1).
Created Model and import RFC to model.
I am trying to execute RFC from controller like :
Doc_Allocation nw_Model=new Doc_Allocation();
lock_Input=new Z_Apip_Enqueue_Dequeue_Barcode_Input(nw_Model);
lock_Input.setIv_Flag("4");
lock_Input.setIv_Userid(tl_User.getUniqueName());
lock_Input.setIv_Barcodeid(barcodeid); wdContext.nodeZ_Apip_Enqueue_Dequeue_Barcode_Input().bind(lock_Input); wdContext.currentZ_Apip_Enqueue_Dequeue_Barcode_InputElement().modelObject().execute();
I am getting error for execute method. There is no mehtod to execute RFC.
wdContext.currentZ_Apip_Enqueue_Dequeue_Barcode_InputElement().modelObject().execute();
How to execute RFC without execute method. Please any one provide sample code to execute RFC
This same code is working for Adaptive RFC Model(But this is deprecated in EHP1). I am trying to migrate same application in EHP1.
Regards,
Satya.

Hi Ayyapparaj,
Thanks for replying...
If i create new application in EHP1 IDE it is working fine.. no problem...
But I am trying to migrate applications which are developed in CE 7.1 SP5 to EHP1, i am getting this type of errors. In ".wdmodel" file of model it is showing Adaptive RFC2, but i am getting error in code(for execute()).
<Core.Reference package="com.sap.tc.cm.arfc2.modeltype" name="AdaptiveRFC2" type="ModelType" path="ModelSettingDefinition:connectionScope"/>
in Error Log of webdynpro application :
com.sap.tc.cm.arfc2.gci.ARFC2TypedModelClass cannot be resolved to a type
How to resolve this problem..
Regards,
Satya
Edited by: Satya on Dec 19, 2008 4:57 PM

Question Regarding metadata modeling

hi you can please tell me the meaning and roll of metadata modeling
Thanks
Regards
Gurkiran

hi
meta data - data on data
example: index page of any text book ( which will give the info of the exact reference (page number))
In general, metamodeling or meta-modeling is the analysis, construction and development of the frames, rules, constraints, models and theories applicable and useful for the modeling in a predefined class of problems.
jeeva

WHAT IS MEANT RFC METADATA?

Hi
What is meant by RFC METADATA?
BR
SAGAR

Hi Sagar,
Please google or search SCN before you ask this type of question. The answers are online.
How to use SCN search
Regards,
Jannus Botha

Passing model instance between DC's

Hi everybody,
does anybody know how to use the same SAP R3 user rollarea for different models in different DCs?
I have a multitude of models callinc FMs in sap but i loose the roll area.
Help please
tom

hi amit,
my problem is not the simple passing of context within the public part. problem is that if i use a model within my dc that calls a fm in sap my roll area is initialized. that way a singleton class within the function group is cleared. i need teh data - otherwise i would have to pass everything through the frontend. and that would be a performance knightmare.
useing the same model instance would - as far as i know - enable me to use only one connection to the background (by setConnectionProvider) and that way the rollarea in R3 woul by intact.
any suggestion is appreciated
Tom

Metadata model... filename

I tried to create a metadata model in Adobe Bridge
is possible to set in a field (as Description) the filename of the file..

i found this bridge script but it change the Title, not the Description.. anybody knows how to change it to description?
#target bridge
if ( BridgeTalk.appName = "bridge" )
var menu = MenuElement.create( "command", "Write Filename to IPTC Title Field", "at the end of Tools");
menu.onSelect = function(m)
var getFolderChildren = true ;
var filesOnly = true ;
var thumbs = getBridgeThumbnails ( TYPES.PHOTOSHOP_OPENABLE, getFolderChildren, filesOnly) ;
for ( var i = 0; i < thumbs.length; i++ )
thumb = thumbs[i]; _ _
md = thumb.synchronousMetadata; _ _
md.namespace ="http://ns.adobe.com/photoshop/1.0/";
md.Title = thumb.name;
Window.alert ("Done " + i + " records");

Error: while accessing an adaptive rfc 2 model

Hi All,
When i select Adaptive rfc 2 model and then search for the BAPI/FM , you find the one with green ones and also the yellow ones .I selected the Fm that shows with yellow triangle icon and when
i do that i get an error :
Error while creating model classes, operation aborted.
Can any one help me out?
Regards,
Edited by: Deepa Tekumalla on May 14, 2009 4:16 PM

Hi,
Are you facing the issue for all function modules?
Yellow icon is for not-released function modules and Green icon is for released function modules.
But, the function module can be called irrespective of whether there is a green or yellow icon.
Try releasing the function module at R/3 side.
Regards,
Vaibhav

J2EE RFC Metadata cache refresh

Hi All,
I've searched a bit on this forum but can't quite find the answer I'm looking for...
Is it possible to perform a cache refresh without having to restart the server, after making changes to an RFC model and deploying it? It's a pain in the neck to have to keep restarting DEV, QA and PROD everytime we move something through the CMS that has changes to models.
I would have thought the assembly step from consolidation to production would have solved this problem but it doesn't.
Thanks,
Gareth.

> Hi Gareth,
> Several stacks like Web Dynpro, Metadata Interface,
> e, JCO etc read the ABAP metadata and cache it on the
> J2EE Engine. Hence the older metadata still remains
> cached.
> Solution:
> 1) If the interface of a function module is changed
> on the ABAP side, the restart of the J2EE application
> server updates the meta data caches on Java side. A
> restart of the ABAP application server is not
> necessary.
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> 2) People think about a option to update the meta
> data cache without a restart of the J2EE application
> server. But nothing in detail is planned at the
> moment.
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> Regards,
> Arun
Hi Arun,
I understand what is happening and how it works and why... I was simply asking if there is a way to refresh the J2EE cache without restarting the server?
I think this is something we really need included in future SP's as it is a pain. As mentioned, I would have throught the assembly/import step in the NWDI CMS would have done something to refresh the cache when an SC is imported into the Production system.
Gareth.

RFC metadata & model instance

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