Use of interface controller

HI
can u please explain me use of interface controller with simple example along with the code
Thanks
kishore

Hi Kishore,
Here r the few facts abt interface controller:-
Used to control access from other components.
Is created automatically when a component is created.
Exists as long as its component is embedded in another
component.
This controller contains data, methods, and events that can be used by other Web Dynpro components.
A componentu2019s interface controller can be used by the embedding component for mappings, eventing, etc.
Interface for external users of a component: data transfer,
eventing.
Interface Controller
One Web Dynpro Component may declare the use of another Web Dynpro Component to form a u201CParent-Childu201D usage relationship. In such cases, the only point of interaction between the parent and child components is the functionality found in the childu2019s interface controller.
There is a usage declaration arrow pointing from the component controller to a child component. Notice that the arrow joins the child component at the top right-hand corner. This is the location of the childu2019s interface controller.
At no time does the Web Dynpro Runtime interact with a componentu2019s interface controller. It is only ever used to form a Parent-Child relationship between two Web Dynpro Components.
Check the links:-
http://help.sap.com/saphelp_nw70/helpdata/EN/47/45641b80f81962e10000000a114a6b/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/EN/44/0dcafa2d9d1ca2e10000000a11466f/frameset.htm
hope dat may help u..
Regards,
Deepak

Similar Messages

Interface Controller Issue

Hi,
Hope you can help me on this one. We're trying to use an interface controller to use an external Web Dynpro app in our current Web Dynpro project. Whenever we try to do some context mapping in our Wed Dynpro project, it seems that our Web Dynpro project (during build time) fails to identify context of our component controller (it gives an <insert context node name / context objects here> cannot be resolved errors).
Did anyone experience this error or would anyone know how to resolve this?
Thanks!
Angelo

Hi Angelo,
Please have a look at below document might helps for your issue In[Inter Application Communication and Navigation (Design Time) in WebDynpro|http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/a0ae5f90-1679-2c10-4183-8c64cf932088?quicklink=index&overridelayout=true]
Suppose there are two DC1 and DC2.
DC1 having context node XYZ/attrubute available in DC1 component Controller and interface controller and mapped it properly.
- then build and deploy DC1.
- Now sync sources and sync used DC for DC2
- then click on component name of the DC2 and bind interface controller to component controller and drag n drop context node XYZ to component controller.
- once done then try to re-build and use the contect node XYZ
Hope it will helps
Regards
Arun

Referenz on interface controller needed

Hello,
my COMPONENTCONTROLLER has an interface method which needs to be called outside the web dynpro component. To be more specific: this method needs to be called in an ABAP OO class, not in a using component.
Therefore I want to transfer a referenz on the interface controller (IWCI_<component>) to the ABAP OO class. But I don't know how to create a referenz on the interface controller (in the component of the interface controller!).
Best regards, Hergen

Hi Hergen,
Below code snippet may help you to acess the interface method of the webdynpro component in an ABAP class.
lo_interface_controller TYPE REF TO abap_interface_controller.
( to get ABAP interface name go to webdynpro component interface -> go to interface controller -> properties-> ABAP Class name, is the interface which need to be used in the programming )
lo_interface_controller ?= wd_this.
( reference to Component controller of your webdynpro component in which above interface method is being used )
lo_interface_controller->interface_method( ).
now you can use this interface controller's reference to acess the method of that interface.
I hope this will help you.
Thanks,
Prashanth

Accessing interface controller in different WD DC

Hi,
I have the following question related to using coding from WD DC1 in DC2 (just two example DCs) since I have problems accessing the interface controller of a different WD DC.
What steps are necessary to use the interface controller of DC1 (to be more precise the interface controller of a particular WD component within a WD DC) in DC2 and even more important in which order?
My assumption:
1) Expose interface controller as public part of DC1.
How is this done? Via exposing the whole WD Component in the public part wizard?
2) Build DC1.
3) Add DC1 to "Used DCs" for DC2.
4) Now the DC1's interface controller should be accessible? Am I right?
Unfortunately is the corresponding interface controller not visible in DC2.
Any help is really appreciated.
Kind regards,
Michel

Hi Michael,
After adding the first DC's component to DC2's used DC's, did you select the same under the used WebDynpro Components of the component controller? If not :
Under the component controller of your second DC, right click on "used WebDynpro Components", select "Add Used Component" and then on clicking on the browse button, in addition to the same component controller you will be able to see the component of the first DC too. Select this and provide a suitable name.
After this you will be able to access your first DC's interface controller in DC2.
Hope this helps,
Best Regards,
Nibu.

Using Interface controller in OCA application

Hi,
My requirement is to pass information and screen control between two components in two different DCs.
My parent DC Component has to pass information to my child DC Component and also call the view assembly of the child DC.
I am using CE7.1 SP07 PAT003.
In my child DC I have created a component Interface Definition say ChildInterface. In the context of interface controller of ChildInterface I have added a string attribute. ChildInterface also has a view container.
Now in my Child component I add ChildInterface as my Implemented Interface. I map the window of the child component to the ChildInterface. To the view container I add the default view of the component.
Now I have created a public part and added the ChildInterface as an entity.
I add a dependency in my Parent Component to this child DC's public part.
At design time I can access my ChildInterface's context from my parent component. However, while adding a link from parent default view to ChildInterfaceView, it gives me an error. however on reload it suppress the error but doesnt open the java editors.
While trying to deploy the applications it gives me a deployment failure message.
Following is the trace-
<r id="1240744927041" t="16:52:07" d="2009-04-26" s="E" c="000" u="" g="" m="Missing app.xml in component C:\Program Files\SAP\IDE\CE\eclipse\plugins\com.sap.tc.mobile.dt.oca.rt\MI\bin\..\inbox\demo.sap.comparentimplementation\demo.sap.comparentimplementation.wdl">
<f n="LocationName" v=" (com.sap.tc.mobile.cfs.deploy.oca.OCADeployer:OCADeployer)"/>
<f n="ThreadName" v="main"/>
</r>
<r id="1240744927042" t="16:52:07" d="2009-04-26" s="E" c="000" u="" g="" m="Deployment of Mobile Component parent(1.0) failed --> java.io.IOException: Missing app.xml in component C:\Program Files\SAP\IDE\CE\eclipse\plugins\com.sap.tc.mobile.dt.oca.rt\MI\bin\..\inbox\demo.sap.comparentimplementation\demo.sap.comparentimplementation.wdl
 at com.sap.tc.mobile.cfs.deploy.oca.OCADeployer.deploy(OCADeployer.java:81)
 at com.sap.tc.mobile.cfs.deploy.DeploymentManager.processDeploymentStatusObjects(DeploymentManager.java:550)
 at com.sap.tc.mobile.cfs.deploy.DeploymentManager.processInbox(DeploymentManager.java:197)
 at com.sap.tc.mobile.cfs.init.FrameworkInitializer.init(FrameworkInitializer.java:192)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at com.sap.tc.mobile.cfs.startup.pda.Startup.main(Unknown Source)
">
<f n="ThreadName" v="main"/>
</r>
<r id="1240744927695" t="16:52:07" d="2009-04-26" s="E" c="000" u="" g="" m="Resourcebundle sap.comtcmobilewdlitecontainer could not be found. Trying to use the default bundle.">
<f n="LocationName" v=" (com.sap.tc.mobile.wdlite.renderer.exception.OCAExceptionLocalizeHelper:)"/>
<f n="ThreadName" v="main"/>
</r>
<r id="1240744927696" t="16:52:07" d="2009-04-26" s="E" c="000" u="" g="" m="Internal Error. Please check the log file. --> java.lang.NoSuchMethodException: com.sap.tc.mobile.wdlite.framework.Start.setUpSystemMenu()
 at java.lang.Class.getMethod(Class.java:1581)
 at com.sap.tc.mobile.wdlite.progmodel.core.Application.resetSystemMenu(Application.java:260)
 at com.sap.tc.mobile.wdlite.progmodel.core.Application.enter(Application.java:242)
 at com.sap.tc.mobile.wdlite.progmodel.core.Application.setCurrent(Application.java:119)
 at com.sap.tc.mobile.wdlite.progmodel.core.Application.launch(Application.java:143)
 at com.sap.tc.mobile.wdlite.progmodel.core.Application.launch(Application.java:175)
 at com.sap.tc.mobile.wdlite.progmodel.core.WDLite.launchApplication(WDLite.java:334)
 at com.sap.tc.mobile.wdlite.framework.Start.runOnContext(Start.java:580)
 at com.sap.tc.mobile.wdlite.framework.Start.startApplication(Start.java:604)
 at com.sap.tc.mobile.wdlite.framework.Start.startContainer(Start.java:641)
 at com.sap.tc.mobile.cfs.framework.spi.FrameworkManager.startContainer(FrameworkManager.java:259)
 at com.sap.tc.mobile.cfs.init.FrameworkInitializer.init(FrameworkInitializer.java:230)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at com.sap.tc.mobile.cfs.startup.pda.Startup.main(Unknown Source)
">
<f n="ThreadName" v="main"/>
</r>
<r id="1240744927697" t="16:52:07" d="2009-04-26" s="E" c="000" u="" g="" m="Internal Error. Please check the log file.">
<f n="LocationName" v=" (com.sap.tc.mobile.wdlite.renderer.exception.OCAExceptionHandler:)"/>
<f n="ThreadName" v="main"/>
Please help.
Regards,
Nisha

please do attach the trace files..
Meanwhile , just check the way you have implemented the interface and the interface defintion of achild node are correct.
Once the implementations are correct,there should not be problem in deployment.
Let us know if you need more info on interface definton creation ...
Regards,
Lakshmi
Edited by: Lakshmi Reddi on May 28, 2009 6:03 AM

Code example using interface controller ?

Hi, guys:
I have a question.
In CRM UI, I need to integrate one component with another component, and I want to pass the value from 1st component to 2nd component using interface controller. Does any one who have done this before and have a code example?
Really appreciate!
Eric

Hi Eric,
Refer:
[http://forums.sdn.sap.com/thread.jspa?threadID=2014259|http://forums.sdn.sap.com/thread.jspa?threadID=2014259]
[http://forums.sdn.sap.com/thread.jspa?threadID=1909625|http://forums.sdn.sap.com/thread.jspa?threadID=1909625]
Regards,
Leon

In which situvation you will use interface controller and custom controller

in which situvation you will use interface controller and custom controller?

Hi rafi,
Custom Controller Custom Controller is as same as the component controller, here we can write the business logic.
Custom Controller means developer can create multiple controller denpeing up work.
By using component controller we cant create multipule contrllers. when we create the DC that time it will be created automatically.
Please look at this [Link|http://help.sap.com/search/highlightContent.jsp]
interface controller
Communication between two componets by using interface controller.
Please look at this [ Thread|Commmunication Between two Components;
Regards
Vijay Kalluri

Windows 7 and DV6500t (ICH8M LPC Interface Controller)

I recently loaded (via dual boot) Windows 7 onto my HP dv6500t. All went fine and all is working OK except for one issue. In Device Manager, I have one unknown device. Looking at its properties, it shows a location of: "ICH8M LPC Interface Controller - 2815" and the driver is unavailable. I tried to use sp36881 (Intel Chipset Installation Utility for ICH8) from HP's site and this did not work. Any help?
Message Edited by MagicPinball on 09-15-2009 09:00 AM
This question was solved.
View Solution.

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How to create a method in Interface Controller

Hi Guys,
        I am working with webdynpro ABAP sample application "Component usage" . There i got a issue like i am not able to create a method in Interface controller. There i am not able to edit anything. Can anybody please let me know how to do that.
            Thanks In Advance
Regards
Ravikumar

Hi Ravi,
          Check This
If one Web Dynpro component (parent component) needs access to another Web
Dynpro component (child component) the parent component can declare the use
of the child component. A specific component usage instance is then created and
the parent component accesses the functionality of the child component via its
component interface controller.
The only parts of a Web Dynpro component that are visible to the user, are the
interface controller and the interface view(s).
All Web Dynpro components have only one interface controller. Via the
interface controller, data, methods, and event handlers can be exposed to
other components.
Interface views represent the visual interface of a Web Dynpro component.
There is a one-to-one relationship between a Window and an interface view.
Each time a window is defined, a related interface view is automatically
generated, which makes the window accessible from outside the component.
The interface view only exposes those inbound and outbound plugs to the
component user that have the interface property checked. Methods and
context data of the window are not accessible via the related interface view.
If the component has no views, there is no need to have Windows. In this
case, the component will not implement an interface view. Such components
having no visual interface are known as faceless components.
Regards
Sarath

Component Interface , INterface controller in WEB UI

Hi Experts,
Can anyone tell me what is a component interface, component usage , Interface controller and interface view?
I am a beginner in WEB UI and is getting confused with these terms.
Please help.
Many Thanks,
Neeraj

Hi,
component interface -> interface view:
Here you can define which Comp/Window should be accessable from outside the component
For example: COMP_1/MainWindow in component interface means this can be accessed as usage from other component
component interface -> interface controller:
In this node there is 2 child nodes: Context and Events:
I don't know how to use Events. But in Context you can add context node from component controller, which can be accessed from outside. This is specially important, when you want to bind two context nodes from two different components.
You can see how this can be used in component controller class in the method WD_USAGE_INITIALIZE
component usage:
Here you can define a usage of of other component.
For example: In your COMP_2 you can create a usage from other component (COMP_1/MainWindow).
Regards,
Steve

WLC to use Management Interface & Few more getting started Questions

Hello,
I'm yet to implement the Wireless LAN in one of our client's corporate office. There 40 x 1130AG LWAPP AP's and 4404 WLC with ACS 4.x for the Authentication of the Wireless Clients who is trying to access the LAN.
For the WLC to connect to the Dual Core Switch, i need to use only one Management Interface with Distribution System port 1 being the Primary and mapping the DS Port 2 as the Backup port for the Management Interface. Is this Right? or do i have configure Dynamic Interfaces as well. Is management interface for accessing / management and configuration only? Management Interface will communicate with ACS for AAA and AP's who would like to associate with the WLC, is this Right?
Note: WLC, AP's, Wireless Clients & AP's are in the same IP Subnet.
Few other question of WLAN's so it helps me during implementation -
â¢ Can I use the 802.1x Authentication application found in the Windows XP for the Wireless Interface; instead of Cisco Client Application. For this; I have to configure the WLC / Wireless Client to use EAP algorithm; is this Right?
â¢ With the help of RRM, the channel interference between multiple AP's (3 - 4 AP's) in the same area is controlled by the WLC by changing the Channels used by the AP which is not same on all the AP's. Is this right?
â¢ How many Client Users will connect per Channels. 802.11 a / g will provide 11 Channels, is this Right?.
â¢ I'm trying to set in the WLC to limit the Client connections per AP to 25, can this be achieved?
Please, can anyone help me in calrifying the above points.
Regards,
Keshava Raju

Many Thanks Mr. Dennis for your help & Clarification.
With ref to your reply point no# 1. I have actually planned to connect one Gig port of the controller to each of the Dual Cisco Core Switch setup. Can i use all 4 Controller Interfaces configured as LAG and Port 1 & 2 connecting to Core Switch 01 and Port 3 & 4 connecting to Core Switch 02?
I have Final two more questions, Request you to help me calrifying this?
â¢ I'm willing to configure Multicast communication between the WLC & AP's. For this configuration is it necessary to Connect the WLC in a different VLAN than the VLAN of the AP's. Is it necessary that I have to set the controller to LWAPP Layer 3 mode to support the Multicast communication?
â¢ Though I do not have implementation experience of the WLAN. My understanding of the Interface settings on the WLC - is I will have to configure one Management Interface for in-band management. Do I have to configure AP-Manager Interface (to support Multicast communication) and to make the WLC to communicate with ACS for Client Authentication. All of the Wireless Devices including the ACS are in one VLAN / IP Subnet, is only one Management Interface is enough for communicating with AP's (with Multicast) and communicating with ACS for forwarding the Authentication messages between the ACS & Wireless Clients?

Regarding Component interface controller

hi all
Can anyone explain me use of Component Interface Controller under Component with example.
Thanks in advance
Imityaz

Hi,
Interface Controller
One Web Dynpro Component may declare the use of another Web Dynpro Component to form a u201CParent-Childu201D usage relationship. In such cases, the only point of interaction between the parent and child components is the functionality found in the childu2019s interface controller.
if an interface controller is part of a component interface, the controller editor is in change mode and the context, the events and the methods can be implemented and edited directly.
Refer this thread,step by step procedure is there.
/docs/DOC-8061#61 [original link is broken]
http://help.sap.com/saphelp_nw70/helpdata/EN/47/45641b80f81962e10000000a114a6b/frameset.htm
http://help.sap.com/saphelp_nw70/helpdata/EN/44/0dcafa2d9d1ca2e10000000a11466f/frameset.htm
Regards,
Sunaina Reddy T

Interface controller example

I created simple example of interface controller.
I embedded view of used web dynpro component in the main web dynpro component
I get the error on deploying :
The initial exception that caused the request to fail, was:
   java.lang.UnsupportedClassVersionError: def/wdp/InternalDef (Unsupported major.minor version 49.0)
I also changed my jdk version to be 1.4.2_12   but still it doesnt work
I created in the DCs in local developement.
kindly suggest solution
thanks

Thank you very much for your answers.
1) i had not only changed the jdk version to 1.4.2_14 in windows preferences but also re installed the entire nwds with the new jdk
2) i reaslised that while doing it, i had given wrong path for jdk. c:/programfiles/java.......... instead of c:/j2sdk              so i changed that
3) i recreated both the DCs after having changed the jdk
4) on building the DC i got some errors, so i put some missing plugins in the eclipse
after all this is worked
thanks again for responses,
-r

Using Keysight M9037A Controller in a NI PXIe-1075 Chassis, need to add a slave PXIe-1065 Chassis

Hello,
I have a bit of an odd configuration and I was hoping someone could confirm whether or not the PXIe-8374 will fulfill my needs or not, and if there is some other product that will.
Our master chassis is a NI PXIe-1075. It has a Keysight M9037A controller installed, which is working perfectly with all of the PXI cards we have installed in the chassis. However, we have a PXIe-1065 Chassis that we now need to make a slave to our PXIe-1075. In the case that we were using an NI controller, I know that a NI PXIe-8374 in the master and a NI PXIe-8370 in the slave would be the solution. However, it is unclear to me wheter or not the NI PXIe-8374 will work in a chassis (even an NI chassis) with an non-NI controller. I was hoping someone would be able to clear that up for me.
Thanks,
Alex

Thank you. That's what I suspected, but I wasn't sure.
Part of my confusion came from a paragraph in the related datasheet (found at http://www.ni.com/datasheet/pdf/en/ds-327 ):
"National Instruments provides several chassis expansion MXI products you can use to create multichassis PXI systems that interface to the same system computer. The system computer in the master PXI chassis can be either an NI embedded controller or a PC connected via an NI remote controller."
It kind of implies that the chassis expansion MXI products only work with PCs or NI embedded controllers, and not with other embedded controllers.

Interface Controller.............

Hi,
Q A.
1. I have Two components in one application.
2. I am using comp2 in comp1 under Used Components.
3. Comp2 has service method Display_Data() which i am calling from Comp 1 onAction of some Button.
4. In Comp2 Interface Controller to display Second Component view i am using
wdComponentAPI.getWindowManager().createModalWindow(wdComponentAPI.getComponentInfo().findInWindows("Display_Window")).setWindowPosition(4,5);
wdComponentAPI.getWindowManager().createModalWindow(wdComponentAPI.getComponentInfo().findInWindows("Display_Window")).show();
I am getting this exception after Run......
#1.5#001320E59E5700660000033300000954000427111FAE5B3B#1168854405962#com.sap.tc.webdynpro.clientserver.cal.
ClientManager#sap.com/tcwddispwda#com.sap.tc.webdynpro.clientserver.cal.ClientManager.handleThrowable#anon2
#0####501ebaa0a47d11dbcccb001320e59e57#ID\#(J2EE4809100)ID2063658050DB00682137272770519926End.4ea38c50a47
d11dba965001320e59e57##0#0#Error#1#/System/UserInterface#Java###
Exception(com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Duplicate instance exception:
The interface view Display_WindowInterfaceView in component Display_Component is already in use.) during processing a Web Dynpro Application.
[EXCEPTION]
#1#com.sap.tc.webdynpro.services.exceptions.WDRuntimeException: Duplicate instance exception:
The interface view Display_WindowInterfaceView in component Display_Component is already in use.
 at com.sap.tc.webdynpro.progmodel.controller.Component.addUsageOfInterfaceView(Component.java:177) at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.<init>(WebDynproWindow.java:79)
 at com.sap.tc.webdynpro.clientserver.window.WebDynproWindow.<init>(WebDynproWindow.java:93)
 at com.sap.tc.webdynpro.clientserver.window.InternalWindow.<init>(InternalWindow.java:32)
 at com.sap.tc.webdynpro.clientserver.cal.ClientComponent.createModalWindow(ClientComponent.java:953)
 at com.sap.smitic.Display_ComponentInterface.Display_ResultView(Display_ComponentInterface.java:121)
 at com.sap.smitic.wdp.InternalDisplay_ComponentInterface.Display_ResultView(InternalDisplay_ComponentInterface.java:127).............
can anybody pls help to find actual reson.......?
Thanks in advance!!
Smita

Hi ,
Have you walk thru the Excel application then it wold be the simple.
First create the comp2 and add theserveice what u said and create the comp1 and create ur button in your View.
In Comp2 crete the a method like in component controller exportToExcel2003() and implemet your code for displaying the popup also .
that would be like this.
public void exportToExcel2003( com.sap.tc.webdynpro.progmodel.api.IWDNode dataNode, java.util.LinkedHashMap columnInfos )
this.openExcelLinkPopup();
private void openExcelLinkPopup() {
 excelLinkWindow =wdComponentAPI.getWindowManager().createModalWindow(wdComponentAPI.getComponentInfo().findInWindows("ExcelLinkPopup"));
 excelLinkWindow.setWindowPosition(WDWindowPos.CENTER);
 excelLinkWindow.open();
//begin
// private member variable for storing instance of an opened popup window.
private IWDWindow excelLinkWindow;
//@@end
And you mentioned this name in interface controller
and configure this mehod as in comp1 Create on Demand
And you can utilize in the Ur button of comp1 first View
register this to ur view ExcelExportComp Interface Controller
In Button on action u add the code like this.
wdThis.wdGetExcelExportCompInterface().exportToExcel2003()
This might helps you .
Or gothru applciation that will useful or not getting post your issues
Thanks,
Lohi.

Use of interface controller

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