How to call method of Component A in Component B

[former_member222068]

Hi Friends,

I want to use Method A of Component A in Component B. Can some one tell me how to call method A on action of a button in component B.

Regards

Sankar

[Former Member · Accepted solution]

Have you declared Comp A as a component usage in Comp B.

In the COMP A, make the methods as Interface methods there will be a check box.

Inside the Comp B, instantiate the Comp A, using the instance you can call those methods of Comp A inside Comp B on the button action. you can instatiate the usage usign the code wizard.

[former_member222068 · Accepted solution]

Hi Lekha,

k fine thank you. Now calling method is same as calling assistance class. is it right or any other way

regards

sankar

[Former Member · Accepted solution]

>

> Hi Lekha,
> 
>    I know how to create interface node, but can you tell me whether do i find check box to mark method as a interface method.
> 
> 
> regards
> sankar

Hi Sankar,

Yes, only interface methods are available outside the component visible for cross component communication.

[Former Member · Accepted solution]

Hi Sankar,

In the component contoller, Methods tab: For each of the Method, there will be a check box to mark it as interface method.

You have to check the same for your usecase.

Best Regards,

Srilatha

[gill367 · Accepted solution]

>

> Hi Lekha,
> 
> k fine thank you. Now calling method is same as calling assistance class. is it right or any other way
> 
> 
> regards
> sankar

yup kind of similar to that

You need to create the controller usage of the interface controller for the used comp A in view or comp controller where you

want ot use it and then call interface method by instatiating the interface controler first and then calling method using this method.

[former_member222068 · Accepted solution]

Hi,

Do i need to create method A ( interface method ) in component controller-method tab or Method A can be created in View or not.

[Former Member · Accepted solution]

Hi Shankar,

View methods are private, you cannot see them outside the view. Create a method in component controller and check the interface checkbox.

[former_member222068 · Accepted solution]

Hi,

Can you give me a sample code for calling interface method.

[Former Member · Accepted solution]

You have a Code generator in Webdynpro (CTRL + f7). For any place in your code call this tool, go to the second tab, select the second radio button.

Select the used component,method. It will generate code for you.

[gill367 · Accepted solution]

You can generate the code using the code wizard.

firs tyou need to add the interface controler of the comp A in the used controllers list of view or comp controler where ever

you want to call

here is the sample code

*create the usage of comp A
data lo_cmp_usage type ref to if_wd_component_usage.

lo_cmp_usage =   wd_this->wd_cpuse_COMPA( ).
if lo_cmp_usage->has_active_component( ) is initial.
  lo_cmp_usage->create_component( ).
endif.

*call the interface controller of comp A

DATA lo_INTERFACECONTROLLER TYPE REF TO ZIWCI_SSG_FEB_EXPL7 .
lo_INTERFACECONTROLLER =   wd_this->wd_cpifc_COMPA( ).

  lo_interfacecontroller->method1(
  ).

[former_member222068 · Accepted solution]

Hi,

  DATA lo_cmp_usage TYPE REF TO if_wd_component_usage.

  lo_cmp_usage =   wd_this->wd_cpuse_method( ).
  IF lo_cmp_usage->has_active_component( ) IS INITIAL.
    lo_cmp_usage->create_component( ).

  ENDIF.


DATA lo_interfacecontroller TYPE REF TO yiwci_sg_method .
lo_interfacecontroller =   wd_this->wd_cpifc_method( ).

  lo_interfacecontroller->execute_method( 
  ).

i was able to do the above process successfully but how to bind data to the node of component 2.

In the component 1 : method A i defiend to get records upto 25 rows. now i tried using same method . but how to bind data using this method

Regards

sankar

[Former Member · Accepted solution]

Hi ,

To set the context node of used component , either make the context node as interface node and set it in the component which used it.

Or write a method which sets the data in the used component and call that method and pass the data as exporting paramaters.

Thanks,

Aditya.

[former_member222068 · Accepted solution]

I thank one and all for giving me inputs,

Hence closing Thread

Regards

Sankar