Interface Method

Hi experts,
I have the following scenario:
Component A opens, in a modal window, the component B.
When I do something in B, it's closed and I return to A.
There, I need read data from B (which is closed at the moment), to do something in A.
Anybody knows how can I do it?
I tried with external context mapping, but It doesn't work...
Could it be done with interface methods?
Thanks in advance!
Lucas

Hi Padmam,
Thank you for your reply too, but I'm having problems with your solution.
I have created an interface Node in Component A, and I have created the mapping in the component usages of the component B.
When I run component A, it gives me an error. I supose that it is rise by this Interface Node.
This error is solved when I check out the property "Input Element (Ext)" of Interface Node, but without this property, I can't do the External Mapping...
Could you correct me if I'm wrong?
Thanks in advance!
Lucas

Similar Messages

Calling an interface METHOD of another abap web dynpro application

Hi Experts,
Can u plz tell how we can Call an interface METHOD of another abap web dynpro application in main WD Component.
Thanks
Mahesh

Hi ,,
   Example ALV interface method calling   GET_MODEL interface method
   View attribute   declaration   :    M_WD_ALV type      IWCI_SALV_WD_TABLE
     DATA lo_INTERFACECONTROLLER TYPE REF TO IWCI_SALV_WD_TABLE .
      wd_this->M_WD_ALV =   wd_this->wd_cpifc_alv( ).   "ALV is the usage name
     DATA lv_value TYPE ref to cl_salv_wd_config_table.
      lv_value = wd_this->M_WD_ALV->get_model( ).   " interface method calling in ALV component usage.....
Regards,
Devi

Access specifiers for interface methods

When we implement the interface ,we have to specify the implementing method access specifier to be "PUBLIC" ,but not "PROTECTED" or "PRIVATE".
Compiler is giving an error -- attempting to assign weaker access privileges ,when we specify protected.
what is the internal reason for this?Why we shouldnt make the access weaker in the implementing class.
Can any one help me on this.Your help is highly appreciated.

When we implement the interface ,we have to specify
the implementing method access specifier to be
"PUBLIC" ,but not "PROTECTED" or "PRIVATE".
Compiler is giving an error -- attempting to assign
weaker access privileges ,when we specify protected.
what is the internal reason for this?There is absolutely no point in having a private interface method. The interface represents a visible abstraction and private methods are never visible so it is a contradiction in terms.
An interface is intended to represent an abstraction that a user (software) uses. Protected via child/parent represents a usage that is restricted to a child from a parent. The child can already see the parent so there is no point in having an abstraction for the child. And it would probably be unwise to limit a child by such an abstraction.
Protected via the package and interfaces is more contentious as to why it is not allowed. There are those that argue that this should be allowed so that a package can use interfaces but restrict them to the package. To me this seems like a minor point given that most interfaces will probably represent an abstraction to other packages and not within a single package. This applies specifically to default access as well.

Question when i am in web dynpro interface method trying to find code

Hello guys,
I am in an event handler and i see this logic wd_this->mo_dodm_srchbidder_c->add_selected_bidder(). When i double click on the add selected bidder it takes me to the method inside interface /sapsrm/IF_CLL_DODM_BIDDER. So when i double click on the method it takes me nowhere.
My question is what do i have to do or where do i go to see the code for add_selected_bidder? thank you.

I think, you have visited to the definition of the interface method and not the implementation of the method.
You have instantiated the wd_this->mo_dodm_srchbidder_c some where, may be in the wd domodifyview. Find that out where the implementation happens.
I believe when you double click the method in editor ask for to go to definition or implementation.

Overriding Interface methods via JNI

Hello,
How we can override Interface methods via JNI?
For example:
At HelloWorldSwing example:
http://download.oracle.com/javase/tutorial/uiswing/examples/start/HelloWorldSwingProject/src/start/HelloWorldSwing.java
I've written anonymous Interface as:
import javax.swing.*;
public class HelloWorldSwing1 {
     * Create the GUI and show it. For thread safety,
     * this method should be invoked from the
     * event-dispatching thread.
    private static void createAndShowGUI() {
        //Create and set up the window.
        JFrame frame = new JFrame("HelloWorldSwing");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        //Add the ubiquitous "Hello World" label.
        JLabel label = new JLabel("Hello World");
        frame.getContentPane().add(label);
        //Display the window.
        frame.pack();
        frame.setVisible(true);
    static Runnable runnableObject = new Runnable() {
         public void run() {
              createAndShowGUI();
   public static void main(String[] args) {
         //Schedule a job for the event-dispatching thread:
        //creating and showing this application's GUI.
        SwingUtilities.invokeLater(runnableObject);
}via JNI functions(http://download.oracle.com/javase/1.4.2/docs/guide/jni/spec/functions.html) we cannot override Runnable Interface's run method? Can we?
Only:
RunnableClass's value isn't null with given example at below. FindClass finds the Runnable Interface.
jclass RunnableClass;
RunnableClass = (*env)->FindClass(env,"java/lang/Runnable");
if( RunnableClass == NULL ) {
    printf("can't find class Runnable\n");
    exit (-1);
}But How can we override Runnable class's run method?
Thanks in Advance

The only way you can override a method in Java is by defining a class that does so, either statically or as an anonymous inner class. You can't do either of those things in JNI. Ergo you cannot do what you are asking about.

Accessing an app.module's client interface methods in other app module

Hi all,
We are developing an application with number of projects (one for each module). We have got a common project with an application module, entity and view objects which are common for the entire application. For reusability, this common project is shared in session scope since most of them are of static nature.
In the shared application module's implementation class, a common method has been included that will be used for data filtering by constructing/appending where clauses in a particular application scoped view object. This method has been exposed as client interface method so that other projects can make use of it. The common project is compiled as an ADF Library jar for accessing it in other projects.
For accessing the exposed client interface method, from the view controller layer, we can include its reference in the page definition file and can execute the method from a managed bean by finding the operation binding from the page definition. But, in case if we wish to access the method in another model project, we could not do so.
Now, my questions are:
1. Is it the correct location(Shared App Mod. Impl) for including the logic to filter the data?
2. Is it possible to access the app. module impl method in another project's impl classes (Let it be entityImpl or viewObjectImpl or viewRowImpl or AppModImpl) ?
3. If it is possible, how it has to be done?
Thanks and regards,

Strange, the same question here {thread:id=2187487}
Timo
Edited by: Timo Hahn on 08.03.2011 12:02
@john You beat me agian

Redefine Interface Method

Hi, I am using a BI Interface "IF_RSCNV_EXIT" and I am adding code to the "Exit" Method.
Do I need to redefine this method? The reason I ask is because the redefine icon is greyed out even though I am in edit mode.
Thanks!

Hello Kenneth
Interface methods are always empty. You can implement them only once within a hierarchy of classes using this interface. Thus, you cannot redefine it.
Regards
Uwe

Interface method in enhancement mode

Hello Experts,
I need to enhance a standard web dynpro component. I have created a new method in the component controller using enhancement implementation. This method has to be called from another component. Therefore I need to make this as an interface method. But in enhancement mode I do not see an option to make this method as an interface mathod. Kindly let me know if this is poosible.
Thanks,
Pooja

Hi Pooja,
Please check this threads.. Hope you understand.
Add an interface Method/Event via enhancement??
How to make Interface node in an Enhancement Implementation
Cheers,
Kris.

Class/Interface/Methods

Hi All,
I'm trying to understand the concept behind abap class/interface/methods.
1. Is it mandatory to have an interface in every class?
2. Once a class is created is it right to define methods as static and public and use them without reference to the interface?
Any help appreciated.
Meghna

hi meghna,
interfaces in ABAP Objects play the same role as classes. Just like classes, interfaces are object types that reside in the namespace of all types. While a class describes all aspects of a class, an interface only describes a partial aspect
The syntax for declaring a local interface is:
INTERFACE intf.
   DATA ...
   CLASS-DATA ...
   METHODS ...
   CLASS-METHODS ...
ENDINTERFACE.
Basically, the declaration of an interface corresponds to the declaration part of a class, where instead of CLASSu2014ENDCLASS, you simply use INTERFACEu2014ENDINTERFACE. Interfaces can contain exactly the same components as classes. Unlike classes, however, interfaces don't need to be divided into different visibility sections because interface components are always integrated in the public visibility section of classes.
i dont want to confuse you .
please go to the below link to know more about... interface and classes.
[http://help.sap.com/saphelp_nw04/helpdata/en/ec/d9ab291b0b11d295400000e8353423/frameset.htm]

Add an interface Method/Event via enhancement??

Hi expert.
I want to pass additional data between two standard webdynpro components. As for as I know, I can use infterface method/event in custom webdynpro component and click check box 'Interface' of method/event.
However I can add new method/event in standard webdynpro via enhancement, the check box 'Interface' is dispear.
So is it possibe to add an interface method/event via enhancement? or pass additional data between standard webdynpro component?

Hi,
First you need to understood the standard webdynpro component which you are looking for.
If the standard component is providing interface methods/events then you can call from your custom webdynpro component re-using the standard component in your custom component.
If you provide mroe information about which standard component and which event/method you are looking for, so that I will provide more info.
Best of luck..
Regards,
Naresh

Why are interface methods public?

I want to define a package interface that will be implemented only by package classes which will be used only by other package classes. Why do the methods have to be public?

In java you don't have multiple inheritance. To
circumvent that it is said to extend the most
important class and implement the others with
interfaces. No. Java does not support multiple inheritance. Interfaces do not exist to supply that functionality. Interfaces can be used to simulate some of the patterns that multiple inheritence represents.
(You can have skeleton implementations to
help you implement those interfaces in other
classes).
But the interface methods are public. So all the
classes you 'extend' via this trick have all methods
public.
This is a bad thing. All of you who have used RMI (or
J2EE) know that you can serialize objects between two
networked machines. ValueObjects pattern from J2EE
toolbox is a good example of this. Now, if you happen
to have several quite similar objects, you obviously
would like them to inherit those common traits from
some base class. If you would also like them to have
some other common functionality (for example server
side 'maintenance' methods, state monitoring, checking
and clearing, you would have to make those methods
public 'cos you only have interface implementation
left - after spending that single credit to actual
inheritance.No. Convienence ("common functionality") should not be used in most cases when designing hierarchies. Inheritence should only be used to represent 'is a' relationships.

Interface method not implemented by class :(

I'm getting an error for interface method
Interface method handleLogout in namespace views.interfaces:IWiseMediator not implemented by class views.mediators:RatingViewMediator.    RatingViewMediator.as
package views.interfaces
    import flash.events.Event;
    public interface IWiseMediator
        function handleLogout(event:Event):void;
but I done this in RatingViewMediator
private function handleLogout(event:Event):void
            viewObject.clearFields();

interfaces are used to enforce a public 'interface' to the class. as a private method can only be accessed by the class itself, it doesn't make sense to include private methods in an interface.

Create interface method in standard component.

Hi Experts,i want to enhance standard component.in that i created one attribute and i used in my component.For that attribute the value is passing from some other component.i try to create interface method in standard component.but it is not possible.so please help me out this issue.
Regards
prasad

Hi,
No, You cannot create Interface Methods/Nodes in Standard Component by Enhancing. I would suggest to create a Singleton class and create your method in that class and can access across components.
Regards,
Kiran

Can't see imported app module client interface methods

I needed to re-use the data model from another workspace in my current project, so I imported it.
When I import a model into another application, the application module's client interface method(s) will show up in the data control palette (and thus become useable as the action of a data action) only if I click on the originating application in the application navigator (and it is certainly useable that way). But if I click anywhere in the application I've imported the model into, the data control palette doesn't display the method(s).
Is this a bug? Is there a way to see the method(s) without having to click on the originating application?
Thanks,
David

I needed to re-use the data model from another workspace in my current project, so I imported it.
When I import a model into another application, the application module's client interface method(s) will show up in the data control palette (and thus become useable as the action of a data action) only if I click on the originating application in the application navigator (and it is certainly useable that way). But if I click anywhere in the application I've imported the model into, the data control palette doesn't display the method(s).
Is this a bug? Is there a way to see the method(s) without having to click on the originating application?
Thanks,
David

Problem accessing local interface methods

Hi all,
I have problems accessing local interfaces of entity beans in OC4J.
My application consists of a session bean as a facade for two local entity beans.
Everytime I try to execute methods on the local interfaces for the entity beans, I receive an exception: "java.lang.InternalError: Illegal removing from cache".
When debugging the application everything seems to be fine until the method calls on the local interfaces (lookups, create methods etc OK). I can even see that the local interface method is acually executed when performing a System.out...! But the method doesn't return to the client (session bean). Instead I revieve the exception above.
I found a similar problem on the orion mail archive (http://www.mail-archive.com/[email protected]/msg17754.html). But there they seem to have problem with removing beans. For me, removing beans works fine too.
Any suggestions would be appreciated.
/johan
[email protected]

Hi all,
I have problems accessing local interfaces of entity beans in OC4J.
My application consists of a session bean as a facade for two local entity beans.
Everytime I try to execute methods on the local interfaces for the entity beans, I receive an exception: "java.lang.InternalError: Illegal removing from cache".
When debugging the application everything seems to be fine until the method calls on the local interfaces (lookups, create methods etc OK). I can even see that the local interface method is acually executed when performing a System.out...! But the method doesn't return to the client (session bean). Instead I revieve the exception above.
I found a similar problem on the orion mail archive (http://www.mail-archive.com/[email protected]/msg17754.html). But there they seem to have problem with removing beans. For me, removing beans works fine too.
Any suggestions would be appreciated.
/johan
[email protected]

Interface Method

Similar Messages

Maybe you are looking for