ALV General Presentation

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March 20th, 2001

ALV Grid ControlBenefits

How does it work

- grid list- interactive functions

How to create ALV Grid

Controls in 30 minutes

Step by Step

about Controls

ALV tree



March 20th, 2001

BenefitsALV Grid Control provides a set of generic functions (e.g. sorting,

filtering) for handling tabular data.

It provides a user interface which

takes advantage of control

technology enabling more

operations by mouse and

interaction with other controls.

(e.g. drag and drop)

The user is able to create variants

of list output by himself.



March 20th, 2001

Grid ListData: gt_outtab like ZFI_PAYMENTS occurs 0

with header line.

Select * into corresponding fields of table gt_outtab

from «.

Join ...

CALL METHOD

GRID1->SET_TABLE_FOR_FIRST_DISPLAY

EXPORTING

I_STRUCTURE_NAME = ¶ ZFI_PAYMENTS '

CHANGING

IT_OUTTAB = GT_OUTTAB.

Data Definition



March 20th, 2001

Interactive functionality

Filtering

sorting

variants management

calculations: (sub-)totals, ABC analysis

download in various formats like Excel (incl.

pivot table), Word

The functionality is

built in and needs to be

activated via events

(toolbar, menu-button,

context menu, user-

command)



March 20th, 2001

Detail



March 20th, 2001

Filter



March 20th, 2001

Sort



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Variants



March 20th, 2001

Variant Management



March 20th, 2001

Totals

Select column which should be totalized. Click Icon.



March 20th, 2001

Sub totalSelect column

on which you

want sub-totals

and click thesub-total icon.



March 20th, 2001

Mail



March 20th, 2001

Download





March 20th, 2001

Spreadsheet



March 20th, 2001

How to create an ALV in 30

minutesThere are sample programs which

are good templates for new

programs. Prefix BCALV

For lists use

BCALV_FULLSCREEN_DEMO

which encapsulates ABAP-Objects

in a function module.

For controls within dynpros use the

other templates.

In R/3 4.0 - 4.5 there are ALV

templates using call-back

technique without controls.

Prefix BALV



March 20th, 2001

Step by stepCopy sample program (incl. User

Interface and Screens)

Create data structure in data-

dictionary

change sample structure to new

structure name

select_data needs to fill the

internal table gt_outtab

done

improve program by manipulating

gs_layout and gt_events

DATA: BEGIN OF gt_outtab OCCURS 0.

INCLUDE STRUCTURE zfi_payments.

DATA: END OF gt_outtab,

perform select_data.

CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'

EXPORTINGi_callback_program = g_repid

i_structure_name = 'zfi_payments'

is_layout = gs_layout

i_save = g_save

is_variant = gs_variant

it_events = gt_events[]

TABLES

t_outtab = gt_outtab

EXCEPTIONS

program_error = 1

OTHERS = 2.



March 20th, 2001

Typical enhancementsFieldcatalogue:

set Header,

dynamic (calculated) fields

set Toolbar, context-menu, «

Variants:

default variant

Events:

TOP_OF_PAGE: show title, parameters,..

BEFORE_LINE_OUTPUT: calculate dynamic

fields,set icons

click/double-click: get detail screens

new Functionality:

depending on application

Get a list of all methods and attributes of the

CL_GUI_ALV_GRID class in the class builder SE24



March 20th, 2001

Example add top-of-page event* sample from ZFI_PAYMENT_LIST

FORM comment_build USING lt_top_of_page TYPEslis_t_listheader.

DATA: ls_line TYPE slis_listheader.*

* LIST HEADING LINE: TYPE HCLEAR ls_line.

ls_line-typ = 'H'.* LS_LINE-KEY: NOT USED FOR THIS TYPE

ls_line-info = 'Payments'(100). APPEND ls_line TO lt_top_of_page.

ENDFORM

FORM top_of_page.CALL FUNCTION 'REUSE_ALV_COMMENTARY_WRITE'

EXPORTINGi_logo = 'ENJOYSAP_LOGO'

it_list_commentary = gt_list_top_of_page.

ENDFORM.

FORM eventtab_build USING rt_events TYPE slis_t_event.*"Registration of events to happen during list display

DATA: ls_event TYPE slis_alv_event.*

CALL FUNCTION 'REUSE_ALV_EVENTS_GET'EXPORTING

i_list_type = 0IMPORTING

et_events = rt_events.

READ TABLE rt_events WITH KEY name = slis_ev_top_of_pageINTO ls_event.

IF sy-subrc = 0.

MOVE g_top_of_page TO ls_event-form. APPEND ls_event TO rt_events.

ENDIF.

ENDFORM.

CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'EXPORTING

i_callback_program = g_repidi_structure_name = 'zfi_payments'

is_layout = gs_layoutit_events = gt_events[]





March 20th, 2001

ALV Tree controlThe ALV tree provides a

similar program interface

like ALV Grid.

Sample ALV-Trees:

Transaction VTRK SEU navigation which is

docked to other Controls.



March 20th, 2001

ResourcesSAP Professional Journal November/December 2000 page 29: Developer¶s Guide to the new Grid Control

Sample Reports:

BCALV*

Transactions/programs using ALV:

VT01N ALV_TREE add deliveries to shipments via Drag and Drop

VTRK ALV_TREE changes context_menu depending on cursor position

VL02N holds the same control (header/parcel tracking)

VTRC ALV_GRID changes data-basis

Redefining the data-dictionary structure:

ALV caches the field-catalogue so it needs to be reset, when you change the data-dictionary structure.

Run BCALV_BUFFER_DELETE to do so.

Attention:

There is a note for the µreset buffer¶ program. It does not work for multiple application servers.

Workaround: When you cannot delete the buffer, rename the data-dictionary structure.

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ALV General Presentation

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