Webdynpro component interface?

[Former Member]

Hi,

Can any one pls explain about webdynpro component interface? what s its actual puropse? wher we use it. I have gone thru some documents. But i am not getting the clear idea.

Gopi.

[Former Member]

hi ,

when u define the the component interface definition in ur component , the elements of the separately defined

interface controller are added to the component controller of the implemented component .

After the implementation, the implementing component now contains the elements of the interface definition

refer this SAP online help :

Working with Web Dynpro Component Interfaces

http://help.sap.com/saphelp_nw70ehp1/helpdata/en/6c/bd896e6661f04b9c8b2916aed3aadc/content.htm

and Implementing a Web Dynpro Interface Definition

http://help.sap.com/saphelp_nw70ehp1/helpdata/en/b9/1c2d4108f08739e10000000a1550b0/content.htm

regards,

amit

[Former Member]

Hi,

it is for the exchange of data and methods of one component to another in a standardized way.

If you have for example one component embedding different components, which you do not know at design time, because you customize them for example and use them at runtime. Using components this and communicating with them is only possible by interfaces. Then you can call generic methods like SAVE / INITIALIZE, which are implemented in the Interface.

data lo_comp_usage            TYPE REF TO if_wd_component_usage,
   data lo_controller        TYPE REF TO iwci_ztest_subcomponent,
   lo_controller ?= lo_comp_usage->get_interface_controller( ).
   lo_controller->save( ).

Of course this is just dummy code. But if you initialize and integrate components dynammically by for example "PREPARA_DYNAMIC_NAVIGATION" of if_wd_view_controller, you will have a component usage, you can access via the fixed component interface.

Regards

Sebastian