alv variants

[Former Member]

hi firends

what is the variant in alv program .what is the use of it.

can u pls explain the evets on the varant like

reuse_alv_variant deaultget

reuse_alv_variant_f4

reuse_alv_variant_existance

reuse_alv_events_get

pls expalin few parameters reqd in theese fun modules.give one sample program

thanks in advance

[Former Member]

hi,

at selection-screen on value-request for p_vari.
**-- Display all existing variants
  call function 'REUSE_ALV_VARIANT_F4'
       exporting
            is_variant = g_variant
            i_save     = g_save
       importing
            e_exit     = g_exit
            es_variant = gx_variant
       exceptions
            not_found  = 2.
  if sy-subrc = 2.
    message id sy-msgid type 'S'      number sy-msgno
            with sy-msgv1 sy-msgv2 sy-msgv3 sy-msgv4.
  else.
    if g_exit = space.
      p_vari = gx_variant-variant.
    endif.
  endif.

Check out these sample program for illustration of above FM

http://www.sap-img.com/abap/alv-reporting-z-list-materials.htm

http://www.sap-img.com/abap/what-is-alv-programming.htm

[Former Member]

Variants are used to save the data and retrieve the same when required. This is an option used in ALV.

SAP provides standard interfaces for initializing and retrieving the display variant information. This includes three function modules and four subroutines.

1. REUSE_ALV_VARIANT_DEFAULT_GET.

This FM is used to get the default variant for the report if it has been set.

EXPORTING

I_SAVE : Controls the storage mode. Allowed values are :

‘A‘ : Standard and user specific variants

‘U’ : User specific variants

‘X’ : Standard Variants

CHANGING

CS_VARIANT : Gets the default variant in a structure like DISVARIANT.

2. REUSE_ALV_VARIANT_F4

This FM is used to get the possible values of the variants on the selection screen.

EXPORTING

IS_VARIANT : Structure of this parameter is like DISVARIANT. Pass the program name through this.

I_SAVE : Controls type of variant to be displayed in value help. Allowed values are

‘A‘ Standard and user specific variants

‘U’ User specific variants

‘X’ Standard Variants

IMPORTING

E_EXIT : If this parameter is blank then user has selected some variant.

ES_VARIANT :

Selected variant is populated in this work area. It’s of structure like DISVARIANT.

3.REUSE_ALV_VARIANT_EXISTENCE

This FM is used to check existence of a

display variant.

EXPORTING

I_SAVE : Type of variant. Allowed values are

‘A‘ Standard and user specific variants

‘U’ User specific variants

‘X’ Standard Variants

CHANGING

CS_VARIANT : Pass on variant details. The structure of this field is like DISVARIANT.

 DATA AREAS TO BE DECLARED FOR VARIANTS :

Data, which will be, used by the standard function modules in ALV for variants. A sample data deceleration is as mentioned below.

DATA: WS_X_VARIANT LIKE DISVARIANT,

WS_VARIANT LIKE DISVARIANT,

WS_SAVE TYPE C,

WS_EXIT TYPE C,

WS_REPID LIKE SY-REPID.