Returning Parameter in OOPS method

Hi frnds,
I am learning oops ABAP. I want to use returning parameters in method and also STATIC METHOD.
If any example it will be more helpful

http://help.sap.com/saphelp_nw2004s/helpdata/en/08/d27c03b81011d194f60000e8353423/content.htm
check this too,
Reward points if helpful,
Thank you,
Regards,
Jagrut BharatKumar Shukla

Similar Messages

Regarding Returning Parameter and Static method

Hi frnds,
I am learning oops ABAP. I want to use returning parameters in method and also STATIC METHOD.
If any example it will be more helpful
regards,
satya

Hi satya,
 Check this out ,Its helpful.
To get some values from a method , one can use the exporting, changing or returning parameters.If one uses RETURNING parameters, the following restrictions apply:-(1) No EXPORTING/CHANGING parameters can be used for the method.(2) Only one RETURNING parameter can be used.(3) RETURNING parameters are only passed by value.This program demonstrates the use of RETURNING parameters and the various ways to call a method with RETURNING parameter to get the value into some variable.
Sample Program
</code>
report ysubdel1 message-id 00.
data : w_num type i.
class c1 definition .
public section.
methods : m1 importing input1 type i
 input2 type i
 returning value(result) type i .
endclass.
class c1 implementation.
method : m1.
result = input1 * 2 + input2.
endmethod.
endclass.
start-of-selection.
data : obj1 type ref to c1 .
create object obj1.
Syntax 1
call method obj1->m1 EXPORTING input1 = 5 input2 = 4
 RECEIVING result = w_num.
write:/5 w_num .
Syntax 2
 w_num = obj1->m1( input1 = 10 input2 = 20 ).
write:/5 w_num .
Syntax 3
move obj1->m1( input1 = 2 input2 = 3 ) to w_num .
write:/5 w_num .
</code>
Static method example
<code>
REPORT zstatic. .
data : num type i.
class testclass definition.
public section.
class-methods : testmethod.
endclass.
class testclass implementation.
method : testmethod.
num = 5.
write:/5 num.
endmethod.
endclass.
start-of-selection.
call method testclass=>testmethod.
</code>
Reward Points if u find helpful.
Thnks & Regards,
Rajesh

Returning Internal Table as Returning Parameter of Method (by Value).

When you return an internal table as the returning parameter of a method, it is passed by value. I understand the concept of passing by value vs. passing by reference, but exactly what this means in this case is ambiguous.
1) It could mean that the entire table, including data, is copied from the local table in the method into the parameter provided by the calling code.
2) Alternatively, it could mean that only the pointer to the table is passed by value and the data is not literally copied from one place in memory to another. This would not be the same as passing by reference. For instance, I believe this is how object references are passed by value.
I want to know how it works, so that I know if there is an efficiency problem with returning a huge table. The returning parameter is wonderful for getter methods, and I prefer to use it over exporting parameters, but I have some concern about passing tables as returning parameters since I don't know how this works.
Can anyone either explain this, or at least make it clear to me whether or not there is an efficiency issue?
Thanks, in advance,
-Chris

Thanks to those who tried to help me with this question, but I finally had to just figure it out on my own. I just realized today that there is a way to find the answer using the debugger's Go To->Status Display->Memory Use option. This shows how variables are stored in memory.
The answer:
First of all, if you set one internal table equal to another like:
i_tab1 = i_tab2.
or like:
i_tab1[] = i_tab2[].
both will simply set i_tab1 to point to the same memory that i_tab2 is using. It does not make a copy. Now, if you attempt to change i_tab1, with an append statement for instance, a copy of i_tab2's memory is made then! The requested change to i_tab1 is then applied to the copied data. AHA!!! This means that even if you think you are copying a table, you are not really doing it until it becomes necessary due to a divergence in values.
I specifically tested a returning parameter to see how memory is handled, and it is basically just like an '=' statment. No copy of the data is performed at first. The memory that is allocated for the local variable in the method is simply pointed to by the variable used in the calling code to recieve that value.
What if you then change the value in the calling code after the method has finished executing? The answer depends on the situation. If the value that you returned from the method is still being pointed to by another variable somewhere, then a copy is made when you attempt to change the returned table in the calling code, but if there is no longer another variable pointing to this memory, you can change the table in the calling program all you want without causing a copy in memory.
For instance, if you have a getter method that returns the value of an attribute, at first no copy will be made, but when you try to change the table in your calling code, a copy will be made then. However, if you just fill a local table in your getter method and return that table, there will never be a copy made, because the local variable that originally pointed to that memory expired when the method completed. That means that after the method completes, the only variable pointing to the allocated memory is the one in the calling code that recieved the returning value.
This is fantastic!! This behaives in a way that seems to provide maximum efficiency in most cases. Also, the table copies are never a waste, since they only happen upon changing of one of the table variables that point to the common memory, and in this case you would want to make a copy to avoid corrupting the other variable.
Also, even if you did return your table as an exporting parameter by reference, you would not gain any significant efficiency. There would still be no table copy if you don't change the returned table. Also, if you did change the returned table, you would still produce a table copy if there was another variable, like an attribute, still pointing to the memory that you set your exporting paramter from before.
The only situation that I can see resulting in a needless efficiency problem is if someone used a getter method to return the value of a table attribute, then changed the returned table in the calling program, and then used a setter method to set the whole table attribute equal to the changed table. This would be a waste, so maybe this should be accomplished in another way.
In conclusion, there is essentially no reason to hesitate returning a whole internal table as a returning parameter from a method call, even though it is pass by value.
Kudos to the ABAP development team for their good design!

Functional Method - Returning parameter typing

Hello experts, i´ve got a question about typing of retruning parameters.
For example, this is my class:
class ZCL_TEST definition
public
*"* public components of class ZCL_CLASS
*"* do not include other source files here!!!
public section.
types:
    BEGIN OF ty_letyps
                  letyp type lvs_letyp
           END OF ty_letyp.
types: ty_t_letyps type standard table of ty_letyps.
class-methods GET_LETYPS
    importing
      !I_MATNR type MATNR
      !I_LGNUM type LGNUM
    returning
      value(RT_LETYPS) type TY_T_LETYPS.
if i want to activae the class i get a syntax error:
The type of a RETURNING parameter must be fully specified
I knew that returning parameters musst be fully specified - that says to me i must not use type any or type any table or other gerneric datatypes for returning parameter. But my type ty_t_letyp is not generic and i can it also use outside the class via
DATA: it_table type ZCL_TEST definition=>ty_t_letyp.
So can someone explain why i must not use local defined types for returning parameters?
Regards

Try typing the table giving key fields
types: ty_t_letyps type standard table of ty_letyps with key field1 field2....
This might be the problem.
Regards
Marcin

The type of RETURNING parameter must be fully specified

Hello,
I want to program a locall class, a method to return a table of a local type:
TYPES:
BEGIN OF ty_line,
   id   TYPE char10,
   txt TYPE string,
END OF ty_line,
ty_line_tt type standard table of ty_line.
CLASS cl_html DEFINITION FINAL CREATE PRIVATE.
PUBLIC SECTION.
    CLASS-METHODS parse importing fdata        type string_table
                        returning value(fmeta) type ty_line_tt.
ENDCLASS.                    "cl_rep DEFINITION
Got an error as in the subject. Does that mean that the table type MUST be declared in the ABAP dictionary?
Regards,
Michal

Hello Michal
Since your static method is PUBLIC you cannot use local types in its interface. The type of the RETURNING parameter must be public as well. Thus, you have to define it in the DDIC.
Alternatively, you could switch to the more flexible EXPORTING parameters. Or you could return you itab as data reference, e.g.:
*& Report ZUS_LOCAL_CLASS                                             *
REPORT zus_local_class                                             .
TYPES:
BEGIN OF ty_line,
id TYPE char10,
txt TYPE string,
END OF ty_line,
ty_line_tt TYPE STANDARD TABLE OF ty_line.
*       CLASS cl_html DEFINITION
CLASS cl_html DEFINITION FINAL CREATE PRIVATE.
PUBLIC SECTION.
    CLASS-METHODS parse IMPORTING fdata TYPE string_table
*    RETURNING value(fmeta) TYPE ty_line_tt.
    RETURNING value(data_obj) TYPE REF TO data.
ENDCLASS. "cl_rep DEFINITION
*       CLASS cl_html IMPLEMENTATION
CLASS cl_html IMPLEMENTATION.
METHOD parse.
*   define local data
    DATA:
      lt_line_tt    TYPE ty_line_tt.
    APPEND INITIAL LINE TO lt_line_tt.
    GET REFERENCE OF lt_line_tt INTO data_obj.
ENDMETHOD.                    "parse
ENDCLASS.                    "cl_html IMPLEMENTATION
Regards
Uwe

How to know that a method has been called and returning value of a method

Hi, everyone! I have two questions. One is about making judgment about whether a method has been called or not; another one is about how to return "String value+newline character+String value" with a return statement.
Here are the two original problems that I tried to solve.
Write a class definition of a class named 'Value' with the following:
a boolean instance variable named 'modified', initialized to false
an integer instance variable named 'val'
a constructor accepting a single paramter whose value is assigned to the instance variable 'val'
a method 'getVal' that returns the current value of the instance variable 'val'
a method 'setVal' that accepts a single parameter, assigns its value to 'val', and sets the 'modified' instance variable to true, and
a boolean method, 'wasModified' that returns true if setVal was ever called.
And I wrote my code this way:
public class Value
boolean modified=false;
int val;
public Value(int x)
{val=x;}
public int getVal()
{return val;}
   public void setVal(int y)
    val = y;
    modified = true;
     public boolean wasModified()
      if(val==y&&modified==true)
      return true;
}I tried to let the "wasModified" method know that the "setVal" has been called by writing:
if(val==y&&modified==true)
or
if(x.setVal(y))
I supposed that only when the "setVal" is called, the "modified" variable will be true(it's false by default) and val=y, don't either of this two conditions can prove that the method "setVal" has been called?
I also have some questions about the feedback I got
class Value is public, should be declared in a file named Value.java
public class Value
cannot find symbol
symbol : variable y
location: class Value
if(val==y&&modified==true)
*^*
*2 errors*
I gave the class a name Value, doesn't that mean the class has been declared in a file named Value.java*?
I have declared the variable y, why the compiler cann't find it? is it because y has been out of scale?
The other problem is:
Write a class named Book containing:
Two instance variables named title and author of type String.
A constructor that accepts two String parameters. The value of the first is used to initialize the value of title and the value of the second is used to initialize author .
A method named toString that accepts no parameters. toString returns a String consisting of the value of title , followed by a newline character, followed by the value of author .
And this is my response:
public class Book
String title;
String author;
public Book(String x, String y)
   { title=x; author=y; }
   public String toString()
   {return title;
    return author;
}I want to know that is it ok to have two return statements in a single method? Because when I add the return author; to the method toString, the compiler returns a complain which says it's an unreachable statement.
Thank you very much!

Lets take this slow and easy. First of all, you need to learn how to format your code for readability. Read and take to heart
{color:0000ff}http://java.sun.com/docs/codeconv/html/CodeConvTOC.doc.html{color}
Now as to your first exercise, most of it is OK but not this:   public boolean wasModified()
      if (val == y && modified == true)
            return true;
y being a parmeter to the setValue method exists only within the scope of that method. And why would you want to test that anyways? If modified evaluates to true, that's all you need to know that the value has been modified. So you could have   public boolean wasModified()
      if (modified == true)
            return true;
   }But even that is unnecessarily verbose, as the if condition evaluates to true, and the same is returned. So in the final analysis, all you need is   public boolean wasModified()
      return modified;
   }And a public class has to be declared in a file named for the class, yes.
As for your second assignment, NO you cannot "return" two variables fom a method. return means just that: when the return statement is encountered, control returns to the calling routine. That's why the compiler is complaining that the statement following the (first) return statement is unreachable.
Do you know how to string Strings together? (it's called concatenation.) And how to represent a newline in a String literal?
db

Pass returning value of get methods to a FM

Hi experts,
I got a getter method, that returns a class value via RETURNING. Is it possible to call a FM and pass the returned parameter directly to an importing value of the FM?
e.g.
CALL FUNCTION 'MY_FM'
    EXPORTING
      test     = my_class->get_my_value( ).
this doesn't work.
Isn't there a way to do this besides assigning the return parameter to a temporary variable and pass this one to the FM?
Thanks in advance.
Regards,
Tobi

Hi,
   Though this is not possible syntactically, there is one workaround.
Its not exactly what we want but just a thought.
You can create Public static attribute and mark it as Read only.
then you can pass the value of it directly using the classname=>attribute name.
I know its not exactly what you want but servers most of the purpose.
Regards,
Sesh

Mandatory return parameter in Web Service

Hello,
Do you know how to set a return parameter mandatory in a Web Service using an Enterprise JavaBean (Netweaver 2004s)? The method has 2 return parameters in the WSDL:
<xs:complexType name="SignResponse">
<xs:sequence>
<xs:element name="nfeid" type="xs:string" nillable="true" minOccurs="0"/>
<xs:element name="status" type="xs:int"/>
</xs:sequence>
</xs:complexType>
The status parameter is mandatory, the other is optional (minOccurs="0"). But we also need the nfeid mandatory for the XI-mapping.
Java:
public class SignResponse implements Serializable {
 public SignResponse(String s) {
 status = -1;
 nfeid = s;
Business Method.
public SignResponse sign(
Regards, Volker

I have also tried to return a Document in my webservices but it doesn't work. From what I understood (I am a newbee), webservices must return primitive data type values (int, String, etc.).
Finally, I changed my webservices so that they return a String :
Document documentXML = new com.sun.xml.tree.XmlDocument();
//Return the XML document into string
StringWriter writer = new StringWriter();
((XmlDocument)documentXML) .write(writer);
return writer .toString();

I am trying to export the combained PDF based on BOOK opetion using below scripts. but i am getting following error message "Invalid value for parameter 'to' of method 'exportFile'. Expected File, but received 1952403524". anyone knows, please suggest me

Dear ALL,
i am trying to export the combained PDF based on BOOK opetion using below scripts. but i am getting following error message "Invalid value for parameter 'to' of method 'exportFile'. Expected File, but received 1952403524". anyone knows, please suggest me solutions.
var myBookFileName ,myBookFileName_temp;
 if ( myFolder != null )
 var myFiles = [];
 var myAllFilesList = myFolder.getFiles("*.indd");
 for (var f = 0; f < myAllFilesList.length; f++)
 var myFile = myAllFilesList[f];
 myFiles.push(myFile);
 if ( myFiles.length > 0 )
 myBookFileName = myFolder + "/"+ myFolder.name + ".indb";
 myBookFileName_temp=myFolder.name ;
 myBookFile = new File( myBookFileName );
 myBook = app.books.add( myBookFile );
 myBook.automaticPagination = false;
 for ( i=0; i < myFiles.length; i++ )
 myBook.bookContents.add( myFiles[i] );
 var pdfFile =File(File(myFolder).fsName + "\\"+myBookFileName_temp+"_WEB.pdf");
 var bookComps = myBook.bookContents;
 if (bookComps.length === 1)
 bookComps = [bookComps];
 var myPDFExportPreset = app.pdfExportPresets.item("AER6");
 app.activeBook.exportFile(ExportFormat.PDF_TYPE,File("D:\\AER\\WEBPDF.pdf"),false,myPDFEx portPreset,bookComps);
 //myBook.exportFile (ExportFormat.pdfType, pdfFile, false);
 //myBook.exportFile(pdfFile, false, pdfPref, bookComps);
 myBook.close(SaveOptions.yes);

Change the below line:
app.activeBook.exportFile(ExportFormat.PDF_TYPE,File("D:\\AER\\WEBPDF.pdf"),false,myPDFExp ortPreset,bookComps);
to
app.activeBook.exportFile(ExportFormat.PDF_TYPE,File("D:\\AER\\WEBPDF.pdf"),false,myPDFExp ortPreset);
Vandy

Field symbol as import parameter in class method ???

Hi everyone,
is it possible to pass a field symbol as an import parameter to a method in a class? If yes, how do I define the data type of the import parameter? I'm trying to work with field symbols as the program doesn't know what kind of structure the program parameter p_srcdso has. Coding example would be something like this:
PARAMETERS: p_srcdso TYPE rsdodsobject DEFAULT '/BIC/AKVI0001'.
DATA: lr_srcpkg TYPE REF TO data.
FIELD-SYMBOLS: <fs_table> TYPE ANY TABLE.
CREATE DATA lr_srcpkg TYPE TABLE OF (p_srcdso).
ASSIGN lr_srcpkg->* TO <fs_table>.
SELECT *
FROM (p_srcdso)
INTO TABLE <fs_table>.
CALL METHOD cl_ref->create_somethign
EXPORTING
i_source_package = <fs_table>.
Thanks,
Alex

Halo Alexander,
You can use TYPE REF TO DATA( say the parameter name is i_data) as the importing parameter of the method create_somethign and inside the method you need to dereference it using data reference variable again.
data: dref type ref to data.
field-symbols: <fs_table> type table.
create data dref like i_data.
assign dref->* to <fs_table>.
Regards
Arshad

RFC function module without RETURN parameter thows error in XI. Please help

Hi Experts,
I have a File to RFC scenario in XI. The RFC function module that I am using at the receiving end does not have "RETURN" parameter. So when I test my scenario I get "RETURN" parameter not found error on SXMB_MONI.
So is it mandatory that RFC function module must have RETURN parameter when used in XI?
Is there any work around to avoid the error without changing the RFC function module?
Please help!
Thanks
Gopal

In my senario the QOS is best effort because it is a Sync.
But the function module is sync in nature as it is returning a parameter called SO_Docs and Ret_Msg. The Ret_Msg contains the error info but it not of BAPIRET2 type.
So is there any way to avoid this error when my QOS is best effort?
Please help!
Gopal

How to use Return parameter of BAPI in DOE

Hello all,
I have a question on Return parameter of BAPI wrappers written in backend. When we use the BAPI in DOE there i do not see any table which stores these Return parameters then what is the use of writting it in BAPI wrappers.
Can anyone please clarify??
Thanks & Best Regards,
Abhishek

Hi,
BAPIRET are stored in log tables during delta download(You can check it in logs and traces of backend integration).
In case of upload, the bapiret is returned in message error list to the devices. Its also stored in message error list table which you can see it in message monitoring.
In upload scenario case all the BAPIRET returned by backend are captured ,where as in case of delta load or push the BAPIRET of type 'A' and 'E' are captured by default and other message types are captured when trace setting is higher.(SMMW_TRC_SETTING).
Regards,
Dhana

Urgent, how to refresh a form with a returned parameter?

Hi people,
I am working in web application using EJB and ADF.
In the main page I have a form and a "search" button.
The "search" button opens a popup window that displays the same form's data in a table with selection and submit. I want to choose a record from the table then submit, close the popup, back to the main page and refresh the form so the current record shows by the form is the record that I have choosen in the popup window.
I did the following:
Created named query "MyEntitySearch"
@NamedQuery(name = "MyEntity.Search",query="select o from myEntity o where o.id = :id"
I made some things so that if id == null -> return all records of the table
else return the selected record.
I dragged and dropped the same method in the main page and in the popup.
In the popup: the submit action listener takes the id of the selected row and close the popup.
public String commandButton1_action() {
System.out.println("retID");
JUCtrlValueBindingRef selectedRowData=(JUCtrlValueBindingRef)
this.getTable1().getSelectedRowData();//return the selected table from the interface
RowImpl row =(RowImpl)selectedRowData.getRow();//get the selected row myEntity selectedValue=(myEntity)row.getDataProvider();//from the entity bean
System.out.println("ID = "+selectedValue.getId());
AdfFacesContext.getCurrentInstance().returnFromDialog(selectedValue,null); //close the dialog window and send the value
return null;
In the main page backing been:
private Long ID=null;
//in the return action listener of the "search" button :
public void ret_action(ReturnEvent returnEvent) {
MyEntity myentity = (myEntity)returnEvent.getReturnValue();
//**return the selected row from the dialog window
ID=(Long)myentity.getId();
BindingContainer bindings = getBindings();
OperationBinding operationBinding =
bindings.getOperationBinding("queryMyEntitySearch");
operationBinding.getParamsMap().put("ID","id");
operationBinding.execute();
System.out.println(ID+"the returned value");
I made the form partial triggers with "search" button, immediate and autosubmitt.
After all of that, unfortunately the form doesn't change its current record to the selected id record.
The returned selected ID from the popup is returned correctly when I printed it. But no changes in the form.
Please to those who know or faced the same problem; I am waiting.
Regards.

Hi,
if you need to access the return value of a method you need to ceate an attribute binding for its result set. Go to the pagedef file, create a new attribute binding and choose the method's result item. Then reference the attribute binding.attributename.inputValue
Frank

Return parameter of cursor_type from a package.

When running or debugging a database package, it appears that a return parameter of cursor_type can not be handled in that SQL Developer will not display the contents of the cursor. We have a large number of packages that contain cursors as output parameters. Currently we use PL/SQL developer which displays the contents of a cursor at the click of a button. This is a great advantage to us as it saves having to write code just for testing purposes.
We are trying to migrate all users to SQL Developer - Is it possible to display the contents of output parameter cursors in SQL Developer ?

As you discovered for yourself, ref cursors aren't supported yet.
Several users are asking for the same, so I'd say chances are big they'll get to that soon. To put more weight on this feature, vote for it on the SQL Developer Exchange.
K.

Passing parameter in a method

hi i have a situation where i have to pass parameter to my method i don't what to pass the parameter define from the viewO because am not using parameter to query from the view,i just what to pass it to my procedure,my method is
                public void submit_agr(String par_id,String dref_id,String tas_id,String agr_id){
                    ViewObject sub = this.findViewObject("AGR1");
                  i don't what to use this-> sub.setNamedWhereClauseParam("tas_id", tas_id); the tas_id is not in AGR1 VIEWO
                  // sub.
                    sub.executeQuery();
                    Row row = sub.first();
                    par_id = (String)row.getAttribute("par_id");
                    agr_id = (String)row.getAttribute("id");
                    callPerformSdmsLogon("SMS_FORM_TO_ADf.delete_agr(?)", new Object[] {par_id,dref_id,tas_id,agr_id});
                }

i try this AM IN jDEVELOPER 11.1.2.1.0
                public void submit_agr(String par_id,String dref_id,String tas_id,String agr_id){
                    ViewObject sub = this.findViewObject("AGR1");
                    Row row = sub.first();
                    sub.setNamedWhereClauseParam("tas_id", new Number(10));-how will i pass this to my procedure
                    sub.setNamedWhereClauseParam("dref_id", new Number(10));-how will i pass this to my procedure
                    par_id = (String)row.getAttribute("par_id");
                    agr_id = (String)row.getAttribute("id");
                    sub.executeQuery();
                    callPerformSdmsLogon("SMS_FORM_TO_ADf.delete_agr(?)", new Object[] {par_id,dref_id,tas_id,agr_id});
                }how will i pass the two prameter to my procedure
Edited by: Tshifhiwa on 2012/07/01 3:14 PM

Returning Parameter in OOPS method

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