Generics in view's method

Hi
I am working in CE 7.2 and I want to declare a method that returns ArrayList<String>.
How is it done?
regards
Yuval Peery

Hi Arun
Thank you for your reply.
The problem is not Arraylist but ArrayList<String> , supported as of JDK 1.5.
Moreover when I try to add the generic type <String> to a function that has been
declared as returning ArrayList, the compiler automatically removes the addition of <String>.
public ArrayList myFunc() should be declared as public ArrayList<String> myFunc()
regards
yuval peery

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How to call view-controller method out of componentcontroller

Hello all,
my component implements a component-interface with method BACK.
Thus my componentcontroller has the interface Method BACK.
When triggering BACK from an foreign component, the implementation within the componentcontroller is called. So far so good.
Now I want to POPUP_AND_CONFIRM when BACK is hit. But this POPUP_TO_CONFIRM requires me to create an action. But I can't create an action within the componentcontroller.
I could realize the POPUP_AND_CONFIRM within the components view. But how can I call a view-method out of the componentcontroller?
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Regards
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You should never attempt to call view methods from outside the view. It is possible to register popop event handlers to methods of the component or custom controllers. From the online help:
For a few special cases it is useful to register event handlers for component controllers or custom controllers on the button events of a dialog box. For these cases, a special POPUP_TO_CONFIRM attribute of type IF_WD_POPUP_TO_CONFIRM_N has been implemented in the IF_WD_WINDOW interface. This interface provides precisely the methods with which event handlers for component and custom controllers can be registered on events of the dialog box.
http://help.sap.com/saphelp_nw70ehp2/helpdata/en/47/b9487e01602fe2e10000000a42189d/frameset.htm

Call view's method from component_controller

Hello,
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Hello,
Thanks for the info.
In this case. If I have a button on my ALV that takes a user to a different view how would that work?
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Call a view's method from Component Controller.

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Hi Tummuru,
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Hi ,
I am New to WEBDYNPRO applictions , How can i see
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open transaction SE80
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Calling view controller method from component controller method

Hi,
Is there any way to call view controller method from component controller method?
Thanks,

Hi Khandal.
You should not make you component controller dependent from a view controller.
But what you can do is to define an event in the component controller. The view
controller can register for this event.
In the stage where you currently want to call the view controller method just fire
the event. In the event handler method in the view controller you can call the
method then.
Why do you need to call a view controller method? Can you give more details
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Sascha

Generic arguments in a Method on an interface.

Hi all,
I'm having trouble with the following code:
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public class SuperClass
public class ClassA extends SuperClass
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public class ClassC extends SuperClass
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Edited by: ValdemarP on Mar 29, 2010 1:55 AM

i know I'm changing the contract, but only the arguments. if you notice, the new arguments is child of class SuperClass... How can I do this? Declare an method in an interface that accepts an arguments of some class and implement that interface, with argument that are children of the arguments declared in the interface... hope i was more clear this time... :(
Example. I can do this on an interface:
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public class xpto extends InterfaceX
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}Edited by: ValdemarP on Mar 29, 2010 3:15 AM
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How to define method witch returning an array in View, using method wizard

Dear experts.
I would like to define method which returning an array in View.
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Hi
While creating method, you can see a check box over there as array type just check it that array type check box,
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thanks
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Edited by: Anup Bharti on Oct 15, 2008 8:50 AM
Edited by: Anup Bharti on Oct 15, 2008 8:51 AM

Question on View Object method to use to reset a data entry form?

I am using a transient View Object form for the purpose of collecting and persisting data entered by users in a set of web data forms that span multiple pages. In the Application Module, I create the first row (see below.) After the user submits the last form, I programmatically add the data to the database (later may change to an Entity Object, but right now I don't use one.) So, the data they entered remains in the VO (it only ever has one row.)
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vo1.reset(); // does not delete data from the row
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Thanks. Yes this looks more like what I need. How do I call this method from the client-tier, or from within a service method in my Application Module?
vo1 = findViewObject("myViewObject");
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compiler error message received:
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Which Row interface method can I call?
Message was edited by:
javaX

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Using a non-static vector in a generic class with static methods

I have a little problem with a class (the code is shown underneath). The problem is the Assign method. This method should return a clone (an exact copy) of the set given as an argument. When making a new instance of a GenericSet (with the Initialize method) within the Assign method, the variables of the original set and the clone have both a reference to the same vector, while there exists two instances of GenericSet. My question is how to refer the clone GenericSet's argument to a new vector instead of the existing vector of the original GenericSet. I hope you can help me. Thanks
package genericset;
import java.util.*;
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if (member(g,i))
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Vector v = z.getVector();
return v.contains(i);
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Vector v1 = z1.getVector();
Vector v2 = z2.getVector();
if((v1 == null) && (v2 != null))
return false;
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return (cardinality(z) == 0);
public static <T extends Comparable> GenericSet<T> union(GenericSet<T> z1, GenericSet<T> z2) {
GenericSet<T> g = assign(z1);
for(int i=0; i<cardinality(z2); i++) {
Item<T> elem = z2.get(i);
insert(g, elem);
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GenericSet<T> g = initialize();
for(int i=0; i<cardinality(z2); i++) {
Item<T> elem = z2.get(i);
if(member(z1, elem))
insert(g, elem);
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GenericSet<T> g = initialize();
for(int i=0; i<cardinality(z1); i++) {
Item<T> elem = z1.get(i);
if(!member(z2, elem))
insert(g, elem);
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if(!member(z1, elem))
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return g;
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insert(g, elem);
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Item<T> elem = z1.get(i);
if(!member(z2, elem))
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return true;
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The issue is not "reference a non-static interface", but simply that you cannot reference a non-static field in a static method - what value of the field ed would the static method use? Seems to me your findEditorData should look something like this:   public static EditorBean findEditorData( String username, EditorBean editorData )
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Enum value not displaying in view - correct method to display in column?

Hello again Experts,
Having trouble with certain columns not populating in my custom class. I know I must have entered them incorrectly, hoping someone can shed some light on it.
Its a custom work item class, so I borrowed the Work Item Status property but am obviously referencing it wrong...
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<Property ID="Target_FSL" Type="enum" AutoIncrement="false" Key="false" CaseSensitive="false" MaxLength="256" MinLength="0" Required="false" Scale="0" EnumType="Destination_FSL_List" />
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Look at other views in Service Manager's management packs to get insight into how enum columns are configured.
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Thanks, Tom
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public class EntityOps<T> implements IEntityOps<T> {
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public class SomeClass {
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I added @Override above the abstract method override, and it provides this additional error:
"HousingConfigImpl.java": method does not override a method from its superclass at line 382, column 17
I have also reconstructed the code layout in a separate set of classes that have no dependancies, but there's no error coming from these!
public class CustomThing {
public interface ISomeInterface<T> {
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import java.util.Collections;
import java.util.List;
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}So, there's something about my code that causes it to be, somehow, different enough from the example provided above so that I get the error. The only differences in the override method definitions in my actual code are in the return type, but those are different in the example above as well. Here are the class declarations, anonymous abstract class creation statements, and abstract method declarations from the actual code.
public abstract class SessionHandler<T> {
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public class HousingConfigImpl implements IHousingConfigOperations, ISessionFactoryManager {
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Generic Extraction (views)

HI
I am involved in a project where there are 35 ztables now i am told to use use views as much as possible and extract the data. does any has any step by step doc to create views and what are the conditions on which i can join the tables.
appreciate any kind of help regarding the issue
k.mohan

try this:
/people/sap.user72/blog/2005/09/05/sap-bw-and-business-content-datasources-in-pursuit-of-the-origins
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/84bf4d68-0601-0010-13b5-b062adbb3e33
also check this:
http://help.sap.com/saphelp_nw04/helpdata/en/3f/548c9ec754ee4d90188a4f108e0121/content.htm
assign points if useful ***
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Generics in view's method

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