topic Re: Get Components in Application Development and Automation Discussions

Get Components

alexandre_docarmorocha — Fri, 05 Sep 2008 20:15:02 GMT

hi everyone,

I know how i can get components information from transparent tables or any structure in the data dictionary.

But, if i have just a internal table, how can i get components table?

E.g:

data:

types: BEGIN OF st_table,

matnr type matnr,

name1 type name1,

END OF st_table.

data: i_table TYPE TABLE OF st_table.

DATA: l_struc TYPE REF TO cl_abap_structdescr.

DATA: lt_comp TYPE cl_abap_structdescr=>component_table.

DATA: ls_comp LIKE LINE OF lt_comp.

l_struc ?= cl_abap_typedescr=>describe_by_name( itab-tabname ).

lt_comp = l_struc->get_components( ).

Does not work out

i've already try the following ones:

DESCRIBE_BY_DATA

DESCRIBE_BY_NAME

DESCRIBE_BY_OBJECT_REF

DESCRIBE_BY_DATA_REF

Any idea?

Alexandre

Re: Get Components

Former Member — Fri, 05 Sep 2008 20:24:22 GMT

Try this:


REPORT  Z_MP_TEST_STRUCT.
data: idfies type table of dfies with header line,
      s_file TYPE string.

parameters: p_table type ddobjname.
parameters: filename(80) type c default 'D:\Documents and Settings\Desktop\download.xls'.

call function 'DDIF_FIELDINFO_GET'
exporting
tabname = p_table
tables
dfies_tab = idfies
exceptions
not_found = 1
internal_error = 2
others = 3.

s_file = filename.

CALL FUNCTION 'GUI_DOWNLOAD'
    EXPORTING
      FILENAME                = s_file
      FILETYPE                = 'DAT'
    TABLES
      DATA_TAB                = idfies
    EXCEPTIONS
      FILE_WRITE_ERROR        = 1
      NO_BATCH                = 2
      GUI_REFUSE_FILETRANSFER = 3
      INVALID_TYPE            = 4
      NO_AUTHORITY            = 5
      UNKNOWN_ERROR           = 6
      HEADER_NOT_ALLOWED      = 7
      SEPARATOR_NOT_ALLOWED   = 8
      FILESIZE_NOT_ALLOWED    = 9
      HEADER_TOO_LONG         = 10
      DP_ERROR_CREATE         = 11
      DP_ERROR_SEND           = 12
      DP_ERROR_WRITE          = 13
      UNKNOWN_DP_ERROR        = 14
      ACCESS_DENIED           = 15
      DP_OUT_OF_MEMORY        = 16
      DISK_FULL               = 17
      DP_TIMEOUT              = 18
      FILE_NOT_FOUND          = 19
      DATAPROVIDER_EXCEPTION  = 20
      CONTROL_FLUSH_ERROR     = 21
      OTHERS                  = 22.

Re: Get Components

Former Member — Fri, 05 Sep 2008 20:27:31 GMT

Hi,

You can use the FM GET_COMPONENT_LIST..to get the list of components for an internal table.

THanks

Naren

Re: Get Components

Former Member — Fri, 05 Sep 2008 21:12:26 GMT

Check this, you get all the info you need in ls_components


type-pools abap.

types: begin of ty_est,
firstname type c,
second type i,
third type d,
end of ty_est.
DATA: ls_components TYPE ABAP_COMPDESCR_TAB,
      wa_components like line of ls_components.
DATA: lo_strucdescr TYPE REF TO cl_abap_structdescr.
data: itab type table of ty_est with header line.


lo_strucdescr ?= cl_abap_typedescr=>describe_by_data( itab ).
ls_components = lo_strucdescr->components.

Re: Get Components

alexandre_docarmorocha — Fri, 05 Sep 2008 21:25:22 GMT

Aparna Shekhar ,

It is a internal table. I can not use this first function. thanks.

Narendran,

This function return the same information that i've already got in the attributes section, i could not see the name of the field, just type. The information that i need are:

begin of abap_componentdescr,

name type string,

type type ref to cl_abap_datadescr,

as_include type abap_bool,

suffix type string,

end of abap_componentdescr,

the return parameter of the method GET_COMPONENTS.

thanks

Alexandre

Re: Get Components

alexandre_docarmorocha — Fri, 05 Sep 2008 21:31:27 GMT

Ramiro,

Wow man! You got it right!

Points are rewards for everyone.

thank you!