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Simple ALV Report PDF Print E-mailUser Rating: / 36PoorBestWritten by Martin SchlegelSaturday, 20 January 2007

Simple example to use ALV and to define the ALV data in an internal table.

Also see ALV Grid ControlREPORT Z_ALV_SIMPLE_EXAMPLE_WITH_ITAB .*************************************************************************Simple example to use ALV and to define the ALV data in an internal*table************************************************************************* Martin Schlegel, BearingPoint, December 2004** Thanks to Madhusudhan Sonee and Rama Krishna Kommineni for testing* and feedback*

*************************************************************************************************************************************************For a very long time, people gave me the feeling that ALV is a*complicated tool that is difficult to understand and to use.*Lately I had to use it and I discovered that ALV is easy to use and*saves a lot of work:*ALV will generate the column headings on its own, so one does not need*to work on headlines and transalation.*ALV allows the user to select the columns he wants to see, so the user*does not need to contact a developer for every change he likes to have.*ALV allows the user to create his own sums, so *ALV has a simple way to work with internal tables.*If you really want to save time, use ALV instead of write!

**************************************************************************Please take 30 minutes to explore the following example and see how*easy it is to use ALV!**************************************************************************data definitiontables:marav. "Table MARA and table MAKT

*---------------------------------------------------------------------** Data to be displayed in ALV* Using the following syntax, REUSE_ALV_FIELDCATALOG_MERGE can auto-* matically determine the fieldstructure from this source programData:begin of imat occurs 100,matnr like marav-matnr, "Material numbermaktx like marav-maktx, "Material short textmatkl like marav-matkl, "Material group (so you can test to make

" intermediate sums)ntgew like marav-ntgew, "Net weight, numeric field (so you can test to

"make sums)gewei like marav-gewei, "weight unit (just to be complete)

end of imat.*---------------------------------------------------------------------*

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* Other data needed* field to store report namedata i_repid like sy-repid.* field to check table lengthdata i_lines like sy-tabix.*---------------------------------------------------------------------*

* Data for ALV displayTYPE-POOLS: SLIS.data int_fcat type SLIS_T_FIELDCAT_ALV.*---------------------------------------------------------------------*select-options:s_matnr for marav-matnr matchcode object MAT1.*---------------------------------------------------------------------*start-of-selection.* read data into table imat

select * from maravinto corresponding fields of table imatwherematnr in s_matnr.

* Check if material was foundclear i_lines.describe table imat lines i_lines.if i_lines lt 1.

* Using hardcoded write here for easy uploadwrite: /'No materials found.'.exit.

endif.end-of-selection.*---------------------------------------------------------------------*** Now, we start with ALV**---------------------------------------------------------------------**** To use ALV, we need a DDIC-structure or a thing called Fieldcatalogue.* The fieldcatalouge can be generated by FUNCTION* 'REUSE_ALV_FIELDCATALOG_MERGE' from an internal table from any* report source, including this report.* The only problem one might have is that the report and table names* need to be in capital letters. (I had it :-( )***---------------------------------------------------------------------** Store report namei_repid = sy-repid.

* Create Fieldcatalogue from internal tableCALL FUNCTION 'REUSE_ALV_FIELDCATALOG_MERGE'

EXPORTINGI_PROGRAM_NAME = i_repidI_INTERNAL_TABNAME = 'IMAT' "capital letters!

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I_INCLNAME = i_repidCHANGING

CT_FIELDCAT = int_fcatEXCEPTIONS

INCONSISTENT_INTERFACE = 1PROGRAM_ERROR = 2OTHERS = 3.

*explanations:* I_PROGRAM_NAME is the program which calls this function** I_INTERNAL_TABNAME is the name of the internal table which you want* to display in ALV** I_INCLNAME is the ABAP-source where the internal table is defined* (DATA....)* CT_FIELDCAT contains the Fieldcatalouge that we need later for* ALV display

IF SY-SUBRC 0.write: /'Returncode',sy-subrc,'from FUNCTION REUSE_ALV_FIELDCATALOG_MERGE'.

ENDIF.*This was the fieldcatlogue*---------------------------------------------------------------------*** And now, we are ready to display our list* Call for ALV list display

CALL FUNCTION 'REUSE_ALV_LIST_DISPLAY'EXPORTING

* I_CALLBACK_PROGRAM = 'Z_ALV_SIMPLE_EXAMPLE_WITH_ITAB'I_CALLBACK_PROGRAM = i_repidIT_FIELDCAT = int_fcatI_SAVE = 'A'

TABLEST_OUTTAB = imat

EXCEPTIONSPROGRAM_ERROR = 1OTHERS = 2.

**explanations:* I_CALLBACK_PROGRAM is the program which calls this function** IT_FIELDCAT (just made by REUSE_ALV_FIELDCATALOG_MERGE) contains* now the data definition needed for display** I_SAVE allows the user to save his own layouts** T_OUTTAB contains the data to be displayed in ALV

IF SY-SUBRC 0.write: /

'Returncode',sy-subrc,'from FUNCTION REUSE_ALV_LIST_DISPLAY'.

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ENDIF.**---------------------------------------------------------------------*** yes, it is that simple. Go ahead and try yourself!**---------------------------------------------------------------------*