Difference between eventhandlers and methods

Hi all
I hope i am correct when i say creating an action called submit in a view raises an eventhandler called onactionsubmit in the implementation tab for that controller
we are expected to write some coding in the implementation tab of the view controller in a specified area.
lets say that this submit action should give us the details of a sales order wherein it should go to the componnet controller to get the data
apart from this coding we need to write code for populating the context of the component controller from where we get the actual data
so how different are the coding areas in the view controller and the component controller since one handles an action and another getting a data?
urgent.
Thanks in advance
krishna chaitanya

hi all
pls elaborate me about the actual difference between a eventhandler and a method
thanks in advance
krishna chaitanya

Similar Messages

What is the difference between function and method

Hey I need help I dont know which is the difference between function and method ?
Does anybody can ask me this question.
Thanks

jverd wrote:
The first two answers were also correct.Also the blocked message, quoted here for posterity:
"Tinkerbell" wrote:
Methods are defined by Java whereas functions are not. ~

What's the difference between FM and Method?

We can layout a list by using FM (reuse_alv_grid_display) or Method cl_gui_alv_grid.
can anybody tell me the difference?Thanks

Hi Slam,
<b>Function modules</b> are procedures that are defined in function groups (special ABAP programs with type F) and can be called from any ABAP program. Function groups act as containers for function modules that logically belong together. You create function groups and function modules in the ABAP Workbench using the Function Builder.
Function modules allow you to encapsulate and reuse global functions in the R/3 System. They are stored in a central library. The R/3 System contains a wide range of predefined function modules that you can call from any ABAP program. Function modules also play an important role in database updates and in remote communications between R/3 Systems or between an R/3 System and a non-SAP system.
Hope u understood.
Thanks&Regards,
Ruthra

What's the difference between equals() and compareTo() method

I'm confused between the two method from String class ,,, what's the main difference between equals() and compareTo() method?

API docs give quite clear information IMHO
public boolean equals(Object anObject)
Compares this string to the specified object. The result is true if and only if the argument is not null and is
a String object that represents the same sequence of characters as this object.
public int compareTo(String anotherString)
Compares two strings lexicographically. ....
The result is a negative integer if this String object lexicographically precedes the argument string. The
result is a positive integer if this String object lexicographically follows the argument string. The result is
zero if the strings are equal; compareTo returns 0 exactly when the equals(Object) method would return
true. Mike

What is the difference between organisation payment method and Assignment payment method?

What is the difference between organisation payment method and Assignment payment method?
As i am a new bie, i am curious to know this though it might sound a silly question.
Thank you,
Kuton

You can create an Organization payment method of any Payment type(Cash, Check, BACS, NACHA etc) under the same country.
All these will be valid payment methods on the payroll description form.
And you can even attach these to a person.
In which case you will have a Base currency (say USD) and payment currency (say GBP).
These cases are not normal and only used by people who use a single BG for paying employees in 3-4 countries.
So, unless you need to pay in different currencies, do not use it.
Cheers,
Vignesh

Difference between invoking a method using reflect.proxy and reflect.Method

Could any one tell me the difference between invoking a method using reflection java.lang.reflect.Method and java.lang.reflect.Proxy
using both the class, we can invoke a method at runtime
1)
Method mthd=cl.getMethod("methodName",parameterName);
Integer output=(Integer)mthd.invoke(new RunMthdRef(),input);
2)
Proxy.newProxyInstance(super.getClass().getClassLoader(), new Class[] { adapter }, new SomeClass(this));
Does anybody have any idea?

The two idioms are fundamentally different. Using java.lang.reflect.Method is how we call a method on a class, using Proxy is how we intercept that method call. An exercise for you, to illustrate that they do not do the same thing: write a simple class with one method, then use java.lang.reflect.Method to invoke that method, and then use a Proxy to invoke that method

Difference between batch input method and batch input recording in LSMW?

hi,
plz tell me the difference between batch input method and batch input recording in LSMW?
thanks & regards
Ruban

Hi Ruban,
The main difference between the two is in lsmw we can view the code status at any time just by coming to prvious steps, but whereas in batch input method unless the recording is finished we cant view the code.
second diff is tht we need to do lot of coding in batch inptu whereas here in lsmw we need not do much coding and mapping to data.
third diff is that batch input is both inbound and outbound where as lsmw is only inbound.
hope u got the differences.....
Regards,
sana M...

Difference between batch input method and direct input method in LSMW.

Hi all,
what is difference between batch input method and direct input method in LSMW. are they same?if differences are there tell me with details?

Hi,
Here are few differences bw Batch Input and Direct Inputs methods.
Batch Input: Uses classical BDC approach, but doesn't required an ABAP program to be written to format the BDC DATA. The user has to format the data using predefined structures and store it in a flat file. Yet it is a slower updation method.
Direct Input: Works similar to Batch Input programs. The difference is, instead of processing screens they validate fields and directly load the data into tables using standard function modules. Much faster and suits for large volume of data.
Thanks.
DhanaLakshmi M S

Difference between GUI_UPLOAD and WS_UPLOAD

Hi,
Please make me clear about the difference between GUI_UPLOAD and WS_UPLOAD. In which cases we need to use these modules...??
Thanks,
Satish

I would suggest to always use the GUI_UPLOAD. I say this because this is the function module which is used in the GUI_UPLOAD method of the class CL_GUI_FRONTEND_SERVICES.   Really, you should probably use the class/method instead of the function module.
data: filename type string.
filename = p_file.
call method cl_gui_frontend_services=>gui_upload
         exporting
              filename                = filename
              filetype                = 'ASC'
         changing
              data_tab                = iflatf
         exceptions
              file_open_error         = 1
              file_read_error         = 2
              no_batch                = 3
              gui_refuse_filetransfer = 4
              no_authority            = 6
              unknown_error           = 7
              bad_data_format         = 8
              unknown_dp_error        = 12
              access_denied           = 13
              others                  = 17.
Regards,
Rich Heilman

What is the difference between start() and run()

Hi:
what is the difference between start() and the run()???
in my app, i have
Console.debug( "starting thread to listen for clients" );
_server = new Server( this );
_server.start();
_server extends Thread..
why everytime i use server.start(); my app will terminate on it is own, even though in my servr.run() method, i have a while loop
and if i call _server.run() explicitly in my code, that while loop will be in execution
can someone let me know??
thnx

what is the difference between start() and the
run()???start() is a method on Thread that tells it to start.
run() is a method in the object that the thread executes.
why everytime i use _server.start(); my app will
terminate on it is own, Err.... I'm not convinced this is true. It'll throw an IllegalThreadStateException, if you try to restart an existing thread.
If that's what you're saying.
even though in my _servr.run()
method, i have a while loopI don't see the connection. Are you saying that the while loop never terminates, and you don't see why the thread is terminating?
and if i call _server.run() explicitly in my code,
that while loop will be in executionIf you call server.run() explicitly, then run() will be executed in the same thread that you called it in.

Difference between implicit and explicit enhancement points

Hi Folks,
I had learned many documents to findout the difference between explicit and implicit enhancement point.I got the theoritical knowledge on that but losing on the practical side..
Can anybody help me out with one real time scenario where the explicit enhancement points have been implemented and the step by step procedure to implement it..
Hoping for the positive response from you..
Regards,
Rohan.

Hi Rohan,
In implicit they are available at the beginning of subroutines defined in the standard reports.
Edit-> Enhancement operations->show implicit enhancement options.
This will highlight all the implicit enhancements in the report.
In Explicit enhancement we have two different types of enhancements -
Enhancement point and Enhancement section.
Enhancement point - SAP has some standard functionality defined for a report , but it may be required that you'll need to add your own code. In this case the code that you'll add will be executed along with the standard code.
Enhancement section - SAP has its standard functionality defines but it may not suit your requirement, in that case you may need to add your code and you'll need that code to be executed only. By this method the existing code is automatically commented and a copy of the same code is available to edit.
After executing the report only your code will be executed and the standard code will be bypassed.
For Practicle implementation, follow this link.
Link : [http://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/bb54c452-0801-0010-0e84-a653307fc6fc]
i hope it will give you some clear picture....
Thanks.
Anurag

Difference between BAPI and RFC?

Difference between BAPI and RFC?
also where to use BAPI and where to use RFC?

Hi,
BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA. in this case u only specify the business object and its method from external system in BAPI there is no direct system call. while RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI.
The following standardized BAPIs are provided:
Reading instances of SAP business objects
GetList ( ) With the BAPI GetList you can select a range of object key values, for example, company codes and material numbers.
The BAPI GetList() is a class method.
GetDetail() With the BAPI GetDetail() the details of an instance of a business object type are retrieved and returned to the calling program. The instance is identified via its key. The BAPI GetDetail() is an instance method. BAPIs that can create, change or delete instances of a business object type
The following BAPIs of the same object type have to be programmed so that they can be called several times within one transaction. For example, if, after sales order 1 has been created, a second sales order 2 is created in the same transaction, the second BAPI call must not affect the consistency of the sales order 2. After completing the transaction with a COMMIT WORK, both the orders are saved consistently in the database.
Create( ) and CreateFromData! ( )
The BAPIs Create() and CreateFromData() create an instance of an SAP business object type, for example, a purchase order. These BAPIs are class methods.
Change( )
The BAPI Change() changes an existing instance of an SAP business object type, for example, a purchase order. The BAPI Change () is an instance method.
Delete( ) and Undelete( ) The BAPI Delete() deletes an instance of an SAP business object type from the database or sets a deletion flag.
The BAPI Undelete() removes a deletion flag. These BAPIs are instance methods.
Cancel ( ) Unlike the BAPI Delete(), the BAPI Cancel() cancels an instance of a business object type. The instance to be cancelled remains in the database and an additional instance is created and this is the one that is actually canceled. The Cancel() BAPI is an instance method.
Add<subobject> ( ) and Remove<subobject> ( ) The BAPI Add<subobject> adds a subobject to an existing object inst! ance and the BAPI and Remove<subobject> removes a subobject from an object instance. These BAPIs are instance methods.
Regards,
Prakash

Difference between void and null?

wht is da difference between void and null w.r.t java?

corlettk wrote:
Why do you care, unless you're implementing a java compiler or JVM?Wow, you sure do suck at helping out in a forum. Why even make this post? You're not helping the OP any, and you made yourself look like a tool.
To the op:
Null is java's version of a null value. Java's version is more strict then many other languages, and will not work in a boolean expression or anywhere code expects a real and not null value. It's simply null.
Void is java's way of declaring no return type on a method. Methods that are void take no 'return' statement and if one is provided will cause a fatal error. The exception to this is using 'return' without a value, which returns control to the caller of the method.
Observe:
//this method returns an int
public int return_int(){
    int value = 5;
    return value;
//this method does not return an int
public void return_nothing(){
    int another_value = 123;
    System.out.println("Here's the value: " + return_int());
//this method does not return anything
public void nothing_returned(){
    return_nothing();
    return;
    System.out.println("This line never gets printed; the method returned control already!");
}

What is the difference between ws_upload and gui_upload

what is the difference between ws_upload and gui_upload
what is the difference between ws_download and gui_down load
pls tell briefly

Hi Kuamr,
UPLOAD and DOWNLOAD, the function modules used until now are not part of the standard set of ABAP commands. They are used to display the file interface on the presentation server. UPLOAD and DOWNLOAD are not compatible with USs and have been replaced by GUI_UPLOAD and GUI_DOWNLOAD.
The new function modules, GUI_UPLOAD and GUI_DOWNLOAD, have an interface that also allows you to write Unicode format to the local hard drive. For a description of these interfaces, refer to the documentation for each function module, available under SAP Easy Access " Development " Function Builder " Goto " Documentation.
Instead of using the function modules, you can use the static methods GUI_UPLOAD and GUI_DOWNLOAD of the global class CL_GUI_FRONTEND_SERVICES.
Hope this resolves your query.
Reward all the helpful answers.
Regards

Difference between ws_download and gui_download

Hi
Can anyone explain briefly the difference between ws_download and gui_download
Thanks in advance
sapien

Hai,
in ws_download is Obsolete in Higher Versions
file type is as follows
PARAMETERS: P_FILE LIKE RLGRAP-FILENAME.     "local file with contracts
CALL FUNCTION 'DOWNLOAD'
     EXPORTING
         FILENAME                = ' '
          FILETYPE                = I_TYPE
     TABLES
          DATA_TAB                = T_DOWNLOAD
     EXCEPTIONS
          INVALID_FILESIZE        = 1
          INVALID_TABLE_WIDTH     = 2
          INVALID_TYPE            = 3
          NO_BATCH                = 4
          UNKNOWN_ERROR           = 5
          GUI_REFUSE_FILETRANSFER = 6
          OTHERS                  = 7.
in gui_download -->is using instead of 'ws_upload'
file type is as follows
PARAMETERS: P_FILE LIKE STRING.     "local file with contracts
DATA: D_FILENAME TYPE STRING,
      D_FILEPATH TYPE STRING,
      D_FULLPATH TYPE STRING,
      L_FILETYPE TYPE CHAR10.
IF L_FILETYPE = 'ASC'.
L_FILETYPE = 'ASC'.
ELSE.
L_FILETYPE = 'DAT'.
ENDIF.
CALL METHOD CL_GUI_FRONTEND_SERVICES=>FILE_SAVE_DIALOG
EXPORTING
   WINDOW_TITLE         =
   DEFAULT_EXTENSION    =
   DEFAULT_FILE_NAME    =
   FILE_FILTER          =
   INITIAL_DIRECTORY    =
   WITH_ENCODING        =
   PROMPT_ON_OVERWRITE = 'X'
   CHANGING
    FILENAME             = D_FILENAME
    PATH                 = D_FILEPATH
    FULLPATH             = D_FULLPATH
   USER_ACTION          =
   FILE_ENCODING        =
EXCEPTIONS
    CNTL_ERROR           = 1
    ERROR_NO_GUI         = 2
    NOT_SUPPORTED_BY_GUI = 3
    others               = 4
IF SY-SUBRC <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
           WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
IF NOT D_FULLPATH IS INITIAL.
CALL FUNCTION 'GUI_DOWNLOAD'
EXPORTING
BIN_FILESIZE                    =
    FILENAME                        = D_FULLPATH
    FILETYPE                        = L_FILETYPE
APPEND                          = ' '
WRITE_FIELD_SEPARATOR           = ' '
HEADER                          = '00'
TRUNC_TRAILING_BLANKS           = ' '
WRITE_LF                        = 'X'
COL_SELECT                      = ' '
COL_SELECT_MASK                 = ' '
DAT_MODE                        = ' '
CONFIRM_OVERWRITE               = ' '
NO_AUTH_CHECK                   = ' '
CODEPAGE                        = ' '
IGNORE_CERR                     = ABAP_TRUE
REPLACEMENT                     = '#'
WRITE_BOM                       = ' '
TRUNC_TRAILING_BLANKS_EOL       = 'X'
WK1_N_FORMAT                    = ' '
WK1_N_SIZE                      = ' '
WK1_T_FORMAT                    = ' '
WK1_T_SIZE                      = ' '
IMPORTING
FILELENGTH                      =
TABLES
    DATA_TAB                        = T_DOWNLOAD
FIELDNAMES                      =
EXCEPTIONS
   FILE_WRITE_ERROR                = 1
   NO_BATCH                        = 2
   GUI_REFUSE_FILETRANSFER         = 3
   INVALID_TYPE                    = 4
   NO_AUTHORITY                    = 5
   UNKNOWN_ERROR                   = 6
   HEADER_NOT_ALLOWED              = 7
   SEPARATOR_NOT_ALLOWED           = 8
   FILESIZE_NOT_ALLOWED            = 9
   HEADER_TOO_LONG                 = 10
   DP_ERROR_CREATE                 = 11
   DP_ERROR_SEND                   = 12
   DP_ERROR_WRITE                  = 13
   UNKNOWN_DP_ERROR                = 14
   ACCESS_DENIED                   = 15
   DP_OUT_OF_MEMORY                = 16
   DISK_FULL                       = 17
   DP_TIMEOUT                      = 18
   FILE_NOT_FOUND                  = 19
   DATAPROVIDER_EXCEPTION          = 20
   CONTROL_FLUSH_ERROR             = 21
   OTHERS                          = 22

Difference between eventhandlers and methods

Similar Messages

Maybe you are looking for