experts doubt again

Former Member — Wed, 21 May 2008 12:32:54 GMT

What are the steps to create a dynamic ALV ? can some one help me out.

Re: experts doubt again

Former Member — Wed, 21 May 2008 12:36:28 GMT

Its very simple if you understand .

make these declarations

DATA: L_STRUCTURE TYPE REF TO DATA,

L_TABLE TYPE REF TO DATA,

STRUC_DESC TYPE REF TO CL_ABAP_STRUCTDESCR,

LS_LVC_FIELDCATALOGUE TYPE LVC_S_FCAT,

LT_LVC_FIELDCATALOGUE TYPE LVC_T_FCAT.

FIELD-SYMBOLS :

<IT_TABLE> TYPE STANDARD TABLE,

<DYN_STR> TYPE ANY,

<STR_COMP> TYPE ABAP_COMPDESCR.

Then we create the structure dynamically,

Syntax:

CREATE DATA L_STRUCTURE TYPE (P_TABLE).

ASSIGN L_STRUCTURE->* TO <DYN_STR>.* Fields Structure

STRUC_DESC ?= CL_ABAP_TYPEDESCR=>DESCRIBE_BY_DATA( <DYN_STR> ).

We build the fieldcatalog by looping the structure :

LOOP AT STRUC_DESC->COMPONENTS ASSIGNING <STR_COMP>.

LS_LVC_FIELDCATALOGUE-FIELDNAME = <STR_COMP>-NAME.

LS_LVC_FIELDCATALOGUE-REF_TABLE = P_TABLE.

APPEND LS_LVC_FIELDCATALOGUE TO LT_LVC_FIELDCATALOGUE.

LS_FIELDCATALOGUE-FIELDNAME = <STR_COMP>-NAME.

LS_FIELDCATALOGUE-REF_TABNAME = P_TABLE.

APPEND LS_FIELDCATALOGUE TO LT_FIELDCATALOGUE.

ENDLOOP.

Then we create the dynamic internal table:

CALL METHOD CL_ALV_TABLE_CREATE=>CREATE_DYNAMIC_TABLE

EXPORTING

IT_FIELDCATALOG = LT_LVC_FIELDCATALOGUE

IMPORTING

EP_TABLE = L_TABLE. ASSIGN L_TABLE->* TO <IT_TABLE>.

Then its a dynamic select if required we can Use. rest is the same process.

i will give you a link again