class cl_abap_structdescr=describe_by_name

[Former Member]

Hi ,

Iam using below code to read the fields in the particular structure.

select single rollname into lv_rollname from dd03l where fieldname = gw_allowed-infty

and tabname = gw_allowed-tabname

and tabletype = 'X'.

if sy-subrc eq 0.

lo_descr = cl_abap_structdescr=>describe_by_name( lv_rollname ) .

lo_table ?= lo_descr .

lt_components = lo_table->key.

But in the lt_components except element maintained with data element DEC is not fetching in the table .

Please give me the methid which fetches all the fields from the structure.

Thanks,

Pavan kk

Edited by: Rob Burbank on Sep 15, 2010 9:30 AM

[kesavadas_thekkillath]

Please give me the methid which fetches all the fields from the structure

Which structure ?

lv_rollname holds a data element and not a structure.

Edited by: Rob Burbank on Sep 15, 2010 9:30 AM

[MarcinPciak]

As Keshav noticed lv_rollname is a data element not a structure, but for structure you can use the following.

data lr_structdescr type ref to cl_abap_structdescr.
data lt_components type table of cl_structdescr=>component_table.

lr_structdescr ?= cl_abap_typedescr=>describe_by_name( 'STRUCTURE_NAME' ) .
lt_components = lr_structdescr->get_components( ).  "holds structure components

Regards

Marcin

Edited by: Rob Burbank on Sep 15, 2010 9:31 AM

[Former Member]

You can also use a structure data object if you have one in a memory.

data lr_structdescr type ref to cl_abap_structdescr.
data lt_components type table of cl_structdescr=>component_table.
data l_structure TYPE some_structure.
 
lr_structdescr ?= cl_abap_typedescr=>describe_by_data( l_structure ) .
lt_components = lr_structdescr->get_components( ).  "holds structure components

[SuhaSaha]

Hello,

Not forgetting Krzysztof's fondness towards OO ABAP, if it is a DDIC structure i would use DDIF_FIELDINFO_GET / DDIF_NAMETAB_GET get the field info.

BR,

Suhas