Changing input parameters at GP-Runtime (Web Dynpro)

Hi,
I'm searching for a solution to change the input paramters for an action (at GP-Runtime) in a web dynpro application.
Is it possible to do something?
I cannot found something in the API, which solves the probelem.
Thanks for your helping hands
Steve

How many variations of the input parameters do you have. Could you give more details on the use case? Did you try the GP public API? It is capable of dynamically changing the input parameters.
Are you using the webdynpro GP-Interface?
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/50d74ada-0c01-0010-07a8-8c118d408e59
If you have a limited number of use cases, then you could create a Block type "Alternatives" and then create a WebDynpro callable object for each permutation of the input parameters.
Regards,
Austin.

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first of all, welcome at SDN.
> I am new to the developing environment of Web Dynpro.
No problem, each one of us has been a newbie at the beginning.
> I just need a confirmation on my understanding.
> Please go through the following abstract and reply
> with a yes or changes if you dont agree.
> Web dynpro is a component of SAP NetWeaver,
No, Web Dynpro is basically a programming model and SAP's strategic approach for developing highly interactive business applications (it's not really or only a web framework, even if it's used mostly in conjunction with Web browser clients). The Web Dynpro runtime is part of the Web Application Server (until NetWeaver '05 available for Java only, followed by the ABAP runtime). So Web Dynpro is an integrated part of the application platform of SAP NetWeaver, but not a standalone component.
> which also offers many other components such as XI, MI, MDM
> and BI. All put together NetWeaver provides people,
> business as well as information intergration.
Ok so far.
> Web Dynpro in itself offers an easy way to develop highly
> interactive web pages through the MVC architecture.
> The coding or the meta data is in Java and hence a
> JDK needs to be installed on the local machine for
> its compilation.
The metadata is independant from possible target runtimes. At the moment, the metadata is used to generate Java classes only, but this is not mandatory. In case of the Web application server for Java, you need a JDK to run the server itself and as a logical consequence each kind of application hosted by the server (including Web Dynpro apps).
> For running it needs to be deployed
> on the J2EE engine on the Web Application server. The
> project object gets a URL and accessing this URL
> displays the web application developed.
Nearly correct. In fact, each Web Dynpro application is represented by an URL. A Web Dynpro project can contain multiple applications, so there might be multiple URLs for different applications contained in a single WD project.
>
> Am I correct, till here ? If yes, then BSP initially
> used for making such web applications holds
> portability issues unlike Web Dynpro which can be
> used to develop applications in Java or ABAP, hence
> the reason why BSP is running off the road and Web
> DynPro is getting into the picture.
Roughly spoken, BSPs are for the ABAP "world" what JSPs are for the Java world. You'll always need an ABAP environment to run BSPs as you'll always need a Java runtime to run JSPs. Portability is limited in both cases to the corresponding basic runtime environment. But, as already stated, this is not really the case for Web Dynpro, since it abstracts the information needed to build the UIs in a manner which is generally independant from the target runtime environment.
>
> Thanx for yor patience.
You are welcome.
Hope that helps.
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Edited by: Arjan Nieuwenhuizen on Feb 25, 2008 3:24 PM

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PS: Reward points for helpful answers.

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The requirement goes like this:
We are developing a form in web dynpro and integerating into portal as an iview.
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As this web dynpro application will be accessed form different portal .I do not prefer hardcoding the host or url etc.
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Changing input parameters at GP-Runtime (Web Dynpro)

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