How to use field symbol in select
Hi,
CONCATENATE 'WTG0' LV_MON INTO LV_FNAME.
ASSIGN (LV_FNAME) TO <FS>.
SELECT SINGLE <FS> FROM COSP INTO LV_SAPRST
WHERE OBJNR = LV_OBJ AND GJAHR = LV_YEAR AND WRTTP = '4' AND KSTAR = GT_INOUT-SAKNR
Error message : Unknown column name "<FS>" . field list. . field list. field list.
actually , if i use if command, i can do, but i want to use simple code by fieldsymbol.
is it possible in select command?
Thanks in advance
Benjamin
Hi
Hope it will help you.
reward if help.
Field Symbols
Field symbols are placeholders or symbolic names for other fields. They do not physically reserve space for a field, but point to its contents. A field symbol cam point to any data object. The data object to which a field symbol points is assigned to it after it has been declared in the program.
Whenever you address a field symbol in a program, you are addressing the field that is assigned to the field symbol. After successful assignment, there is no difference in ABAP whether you reference the field symbol or the field itself. You must assign a field to each field symbol before you can address the latter in programs.
Field symbols are similar to dereferenced pointers in C (that is, pointers to which the content operator * is applied). However, the only real equivalent of pointers in ABAP, that is, variables that contain a memory address (reference) and that can be used without the contents operator, are reference variables in ABAP Objects.
All operations programmed with field symbols are applied to the field assigned to it. For example, a MOVE statement between two field symbols moves the contents of the field assigned to the first field symbol to the field assigned to the second field symbol. The field symbols themselves point to the same fields after the MOVE statement as they did before.
You can create field symbols either without or with type specifications. If you do not specify a type, the field symbol inherits all of the technical attributes of the field assigned to it. If you do specify a type, the system checks the compatibility of the field symbol and the field you are assigning to it during the ASSIGN statement.
Field symbols provide greater flexibility when you address data objects:
If you want to process sections of fields, you can specify the offset and length of the field dynamically.
You can assign one field symbol to another, which allows you to address parts of fields.
Assignments to field symbols may extend beyond field boundaries. This allows you to address regular sequences of fields in memory efficiently.
You can also force a field symbol to take different technical attributes from those of the field assigned to it.
The flexibility of field symbols provides elegant solutions to certain problems. On the other hand, it does mean that errors can easily occur. Since fields are not assigned to field symbols until runtime, the effectiveness of syntax and security checks is very limited for operations involving field symbols. This can lead to runtime errors or incorrect data assignments.
While runtime errors indicate an obvious problem, incorrect data assignments are dangerous because they can be very difficult to detect. For this reason, you should only use field symbols if you cannot achieve the same result using other ABAP statements.
For example, you may want to process part of a string where the offset and length depend on the contents of the field. You could use field symbols in this case. However, since the MOVE statement also supports variable offset and length specifications, you should use it instead. The MOVE statement (with your own auxiliary variables if required) is much safer than using field symbols, since it cannot address memory beyond the boundary of a field. However, field symbols may improve performance in some cases.
check the below links u will get the answers for your questions
http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3860358411d1829f0000e829fbfe/content.htm
http://www.sts.tu-harburg.de/teaching/sap_r3/ABAP4/field_sy.htm
http://searchsap.techtarget.com/tip/1,289483,sid21_gci920484,00.html
Syntax Diagram
FIELD-SYMBOLS
Basic form
FIELD-SYMBOLS <fs>.
Extras:
1. ... TYPE type
2. ... TYPE REF TO cif
3. ... TYPE REF TO DATA
4. ... TYPE LINE OF type
5. ... LIKE s
6. ... LIKE LINE OF s
7. ... TYPE tabkind
8. ... STRUCTURE s DEFAULT wa
The syntax check performed in an ABAP Objects context is stricter than in other ABAP areas. See Cannot Use Untyped Field Symbols ad Cannot Use Field Symbols as Components of Classes.
Effect
This statement declares a symbolic field called <fs>. At runtime, you can assign a concrete field to the field symbol using ASSIGN. All operations performed with the field symbol then directly affect the field assigned to it.
You can only use one of the additions.
Example
Output aircraft type from the table SFLIGHT using a field symbol:
FIELD-SYMBOLS <PT> TYPE ANY.
DATA SFLIGHT_WA TYPE SFLIGHT.
ASSIGN SFLIGHT_WA-PLANETYPE TO <PT>.
WRITE <PT>.
Addition 1
... TYPE type
Addition 2
... TYPE REF TO cif
Addition 3
... TYPE REF TO DATA
Addition 4
... TYPE LINE OF type
Addition 5
... LIKE s
Addition 6
... LIKE LINE OF s
Addition 7
... TYPE tabkind
Effect
You can define the type of the field symbol using additions 2 to 7 (just as you can for FORM parameters (compare Defining the Type of Subroutine Parameters). When you use the ASSIGN statement, the system carries out the same type checks as for USING parameters of FORMs.
This addition is not allowed in an ABAP Objects context. See Cannot Use Obsolete Casting for FIELD SYMBOLS.
In some cases, the syntax rules that apply to Unicode programs are different than those for non-Unicode programs. See Defining Types Using STRUCTURE.
Effect
Assigns any (internal) field string or structure to the field symbol from the ABAP Dictionary (s). All fields of the structure can be addressed by name: <fs>-fieldname. The structured field symbol points initially to the work area wa specified after DEFAULT.
The work area wa must be at least as long as the structure s. If s contains fields of the type I or F, wa should have the structure s or at least begin in that way, since otherwise alignment problems may occur.
Example
Address components of the flight bookings table SBOOK using a field symbol:
DATA SBOOK_WA LIKE SBOOK.
FIELD-SYMBOLS <SB> STRUCTURE SBOOK
DEFAULT SBOOK_WA.
WRITE: <SB>-BOOKID, <SB>-FLDATE.
Related
ASSIGN, DATA
Additional help
Declaring Field Symbols
Similar Messages
-
How to use Field-symbol with dynamic select query
Can anybody tell me, how to use field-symbols in the dynamic select query.
FIELD-SYMBOLS <fs> { typing | STRUCTURE struc DEFAULT dobj }.
1. ... typing
2. ... STRUCTURE struc DEFAULT dobj
The FIELD-SYMBOLS statement declares a field symbol <fs>. The name conventions apply to the name fs. The angle brackets of the field symbols indicate the difference to data objects and are obligatory. You can declare field symbols in any procedure and in the global declaration section of an ABAP program, but not in the declaration section of a class or an interface. You can use a field symbol in any operand position in which it is visible and which match the typing defined using typing.
After its declaration, a field symbol is initial - that is, it does not reference a memory area. You have to assign a memory area to it (normally using the ASSIGN statement) before you can use it as an operand. Otherwise an exception will be triggered.
eg.
FIELD-SYMBOLS <fs> TYPE ANY.
DATA: BEGIN OF line,
string1(10) VALUE '0123456789',
string2(10) VALUE 'abcdefghij',
END OF line.
WRITE / line-string1+5.
ASSIGN line-string1+5(*) TO <fs>.
WRITE / <fs>.
output:
56789
56789
reward if helpful
anju -
can anyone tell me how to use field symbols. What effect it has on performance of a program?
what r its avantages?
iam working on a report where iam facing a lot of problems in performance issue. can anyone tell how field symbols are useful in this regard?
thanx to allCheck the below links
http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3860358411d1829f0000e829fbfe/content.htm
FIELD-SYMBOLS
Basic form
FIELD-SYMBOLS <fs>.
Additions
1. ... STRUCTURE s DEFAULT wa
2. ... TYPE t
3. ... TYPE LINE OF t
4. ... LIKE s
5. ... LIKE LINE OF s
Effect
This statement declares a symbolic field called <fs>. At runtime, you can assign a concrete field to the field symbol using ASSIGN . All operations performed with the field symbol then directly affect the field assigned to it.
You can only use one of the additions.
Example
Output aircraft type from the table SFLIGHT using a field symbol:
FIELD-SYMBOLS <PT>.
TABLES SFLIGHT.
ASSIGN SFLIGHT-PLANETYPE TO <PT>.
WRITE <PT>.
Addition 1
... STRUCTURE s DEFAULT wa
Effect
Assigns any (internal) field string or structure to the field symbol from the ABAP/4 Dictionary ( s ). All fields of the structure can be addressed by name: <fs>-fieldname . The structured field symbol points initially to the work area wa specified after DEFAULT .
The work area wa must be at least as long as the structure s . If s contains fields of the type I or F, wa should have the structure s or at least begin in that way, since otherwise alignment problems may occur.
Example
Address components of the flight bookings table SBOOK using a field symbol:
DATA SBOOK_WA LIKE SBOOK.
FIELD-SYMBOLS <SB> STRUCTURE SBOOK
DEFAULT SBOOK_WA.
WRITE: <SB>-BOOKID, <SB>-FLDATE.
Addition 2
... TYPE t
Addition 3
... TYPE LINE OF t
Addition 4
... LIKE s
Addition 5
... LIKE LINE OF s
Effect
You can use additions 2 to 5 to type field symbols in the same way as FORM parameters (see also Type assignment of subroutine parameters). ASSIGN performs the same type checks as with USING parameters of FORM s. -
How to use FIELD-SYMBOLS to declare a table
How to use FIELD-SYMBOLS to declare a table?
hi yong,
this will be very general:
FIELD-SYMBOLS : <gf_table> TYPE ANY TABLE.
or
to do like a specific table from your program
FIELD-SYMBOLS : <gf_table> TYPE itab.
itab is of course your internal table from your program.
ec -
How to use field symbols in program
how to use field symbols can any one explain with example please..
Regards,
venki...Hi
Field Symbols
Field symbols are placeholders or symbolic names for other fields. They do not physically reserve space for a field, but point to its contents. A field symbol cam point to any data object. The data object to which a field symbol points is assigned to it after it has been declared in the program.
Whenever you address a field symbol in a program, you are addressing the field that is assigned to the field symbol. After successful assignment, there is no difference in ABAP whether you reference the field symbol or the field itself. You must assign a field to each field symbol before you can address the latter in programs.
Field symbols are similar to dereferenced pointers in C (that is, pointers to which the content operator * is applied). However, the only real equivalent of pointers in ABAP, that is, variables that contain a memory address (reference) and that can be used without the contents operator, are reference variables in ABAP Objects.
All operations programmed with field symbols are applied to the field assigned to it. For example, a MOVE statement between two field symbols moves the contents of the field assigned to the first field symbol to the field assigned to the second field symbol. The field symbols themselves point to the same fields after the MOVE statement as they did before.
You can create field symbols either without or with type specifications. If you do not specify a type, the field symbol inherits all of the technical attributes of the field assigned to it. If you do specify a type, the system checks the compatibility of the field symbol and the field you are assigning to it during the ASSIGN statement.
Field symbols provide greater flexibility when you address data objects:
If you want to process sections of fields, you can specify the offset and length of the field dynamically.
You can assign one field symbol to another, which allows you to address parts of fields.
Assignments to field symbols may extend beyond field boundaries. This allows you to address regular sequences of fields in memory efficiently.
You can also force a field symbol to take different technical attributes from those of the field assigned to it.
The flexibility of field symbols provides elegant solutions to certain problems. On the other hand, it does mean that errors can easily occur. Since fields are not assigned to field symbols until runtime, the effectiveness of syntax and security checks is very limited for operations involving field symbols. This can lead to runtime errors or incorrect data assignments.
While runtime errors indicate an obvious problem, incorrect data assignments are dangerous because they can be very difficult to detect. For this reason, you should only use field symbols if you cannot achieve the same result using other ABAP statements.
For example, you may want to process part of a string where the offset and length depend on the contents of the field. You could use field symbols in this case. However, since the MOVE statement also supports variable offset and length specifications, you should use it instead. The MOVE statement (with your own auxiliary variables if required) is much safer than using field symbols, since it cannot address memory beyond the boundary of a field. However, field symbols may improve performance in some cases.
check the below links u will get the answers for your questions
http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3860358411d1829f0000e829fbfe/content.htm
http://www.sts.tu-harburg.de/teaching/sap_r3/ABAP4/field_sy.htm
http://searchsap.techtarget.com/tip/1,289483,sid21_gci920484,00.html
Syntax Diagram
FIELD-SYMBOLS
Basic form
FIELD-SYMBOLS <fs>.
Extras:
1. ... TYPE type
2. ... TYPE REF TO cif
3. ... TYPE REF TO DATA
4. ... TYPE LINE OF type
5. ... LIKE s
6. ... LIKE LINE OF s
7. ... TYPE tabkind
8. ... STRUCTURE s DEFAULT wa
The syntax check performed in an ABAP Objects context is stricter than in other ABAP areas. See Cannot Use Untyped Field Symbols ad Cannot Use Field Symbols as Components of Classes.
Effect
This statement declares a symbolic field called <fs>. At runtime, you can assign a concrete field to the field symbol using ASSIGN. All operations performed with the field symbol then directly affect the field assigned to it.
You can only use one of the additions.
Example
Output aircraft type from the table SFLIGHT using a field symbol:
FIELD-SYMBOLS <PT> TYPE ANY.
DATA SFLIGHT_WA TYPE SFLIGHT.
ASSIGN SFLIGHT_WA-PLANETYPE TO <PT>.
WRITE <PT>.
Addition 1
... TYPE type
Addition 2
... TYPE REF TO cif
Addition 3
... TYPE REF TO DATA
Addition 4
... TYPE LINE OF type
Addition 5
... LIKE s
Addition 6
... LIKE LINE OF s
Addition 7
... TYPE tabkind
Effect
You can define the type of the field symbol using additions 2 to 7 (just as you can for FORM parameters (compare Defining the Type of Subroutine Parameters). When you use the ASSIGN statement, the system carries out the same type checks as for USING parameters of FORMs.
This addition is not allowed in an ABAP Objects context. See Cannot Use Obsolete Casting for FIELD SYMBOLS.
In some cases, the syntax rules that apply to Unicode programs are different than those for non-Unicode programs. See Defining Types Using STRUCTURE.
Effect
Assigns any (internal) field string or structure to the field symbol from the ABAP Dictionary (s). All fields of the structure can be addressed by name: <fs>-fieldname. The structured field symbol points initially to the work area wa specified after DEFAULT.
The work area wa must be at least as long as the structure s. If s contains fields of the type I or F, wa should have the structure s or at least begin in that way, since otherwise alignment problems may occur.
Example
Address components of the flight bookings table SBOOK using a field symbol:
DATA SBOOK_WA LIKE SBOOK.
FIELD-SYMBOLS <SB> STRUCTURE SBOOK
DEFAULT SBOOK_WA.
WRITE: <SB>-BOOKID, <SB>-FLDATE.
<b>Reward points for useful Answers</b>
Regards
Anji -
How to use field-symbols in MODIFY ... TRANSPORTING and SORT
Hi,
I need to increase the performance of an abap report using the field-symbols. More exactly the code is the following.
TYPES:
BEGIN OF itab_structure.
INCLUDE STRUCTURE nameofstructure.
TYPES:
RECNO LIKE sy-tabix,
END OF itab_structure.
DATA:
itab TYPE STANDARD TABLE OF itab_structure
WITH HEADER LINE
WITH NON-UNIQUE DEFAULT KEY INITIAL SIZE 0.
SORT itab ASCENDING BY f1.
LOOP AT itab WHERE f1 = '10'.
itab-fn= value-n.
MODIFY itab
TRANSPORTING fx fy fz ft
WHERE f1 = c1_filed AND
f2 = c2_field.
ENDLOOP.
I need your suggestions in this kind of conversion or solution.
SORT itab ASCENDING BY f1 (<-- I don't know if in this case the better performances should be obtained using field symbols and in which way)
FIELD-SYMBOLS: <fs_itab_line> TYPE LINE OF itab.
LOOP AT itab ASSIGNING <fs_itab_line> WHERE
<fs_itab_line>-f1 = '10'.
MODIFY itab
TRANSPORTING fx fy fz ft
WHERE f1 = c1_filed AND
f2 = c2_field.
(I don't know if in this case the better performances should be obtained using field symbols and in which way)
ENDLOOP.
I wish to implement the field symbols or the better performance in terms of execution time in all my abap code, where it is possible.
Any suggestion will be well appreciated.
Thanks in advance for your kind support.
Regards,
GiovanniDear All,
I have appeciated your suggestions and I can conclude these points in my case:
1) The "sort" statement is not optimized in a different way using filed-symbols
2) The loop with "where" condition on a standard table is performed using filed-symbols
But ... my last point to investigate is about the statement MODIFY table TRANSPORTING f1, f2 WHERE conditions.
More exactly, in my code the execution logic of the abap code expects a global modification of the same table at the end of every (primary) loop, using the MODYFY statement.
In other words in my code I can locate two loops on the same table in the following logic:
LOOP AT table1 WHERE f1 = '10'. (#1)
updates to table1
set c1_filed, c2_filed
LOOP AT table1. (#2)
IF f1 = c1_filed AND
f2 = c2_filed.
table1-fx = 'x'.
table1-fy = 'y'.
table1-fz = 'z'.
table1-ft = 't'.
ENDIF.
MODIFY table1.
ENDLOOP. (#2)
ENDLOOP. (#1)
In better way (maybe more fast in terms of execution time) to modify a set of lines (MODIFY...TRANSPORTING...WHERE):
LOOP AT table1 WHERE f1 = '10'.
table1-fx= 'x'.
table1-fy= 'y'.
table1-fz= 'z'.
table1-ft= 't'.
MODIFY itab
TRANSPORTING fx fy fz ft
WHERE f1 = c1_filed AND
f2 = c2_field.
ENDLOOP.
My aim is to use field-symbols everywhere possible for speeding up the execution of my code,by maintaining this logic.
My proposal should be the following but I need your kind opinion.
FIELD-SYMBOLS: <fs_#1_line> TYPE LINE OF table1.
FIELD-SYMBOLS: <fs_#2_line> TYPE LINE OF table1.
LOOP AT table1 WHERE f1 = '10' ASSIGNING <fs_#1_line>. (#1)
updates to table1
set c1_filed, c2_filed
LOOP AT table1 ASSIGNING <fs_#2_line>. (#2)
IF <fs_#2_line>-f1 = c1_filed AND
<fs_#2_line>-f2 = c2_filed.
<fs_#2_line>-fx = 'x'.
<fs_#2_line>-fy = 'y'.
<fs_#2_line>-fz = 'z'.
<fs_#2_line>-ft = 't'.
ENDIF.
ENDLOOP. (#2)
ENDLOOP. (#1)
Your kind support is very important for me.
Thanks in advance.
Regards,
Giovanni -
How to use field symbols in dynamic select query
I have a requirement to take the table name from selection screen and get data from that table
SELECT * FROM (P_TBLNM)
INTO TABLE <ITAB>
WHERE <condition>.
I have declared field symbol as type any table , but i am getting dump saying fieldsymbol is not getting assigned .
Any pointers , please help.Hi laxmi,
for your second question, try this one:
DATA : ref_table_des TYPE REF TO cl_abap_structdescr,
<itab> TYPE STANDARD TABLE,
<wtab> TYPE ANY,
dref TYPE REF TO DATA.
DATA: <knumh>.
ref_table_des ?= cl_abap_typedescr=>describe_by_name( P_TBLNM ).
create data dref type handle ref_table_des.
assign dref->* to <wtab>.
create data dref like standard table of <wtab>.
assign dref->* to <itab>.
SELECT * FROM (P_TBLNM)
INTO TABLE <itab>
WHERE <condition>.
LOOP AT <itab> ASSIGNING <wtab>.
assign component 'KNUMH' of structure <wtab> to <knumh>.
SELECT * FROM KONP
APPENDING TABLE GI_KONP
WHERE KNUMH = <knumh>.
ENDLOOP.
Regards,
Richard
Edited by: richard santos on Nov 17, 2009 8:16 AM -
How to use FIELD-SYMBOLS with TYPE ANY?
Hi!
I need to write a function which gets an import string parameter containing a field name like MATNR. In this function I have to "map" this string to a real variable so that I can access the field which is represented by the string. I tried it like this but it does not work:
FUNCTION ZTEST1.
""Lokale Schnittstelle:
*" IMPORTING
*" REFERENCE(I_MARA) TYPE MARA
DATA: FIELD_NAME(30) VALUE 'I_MARA'.
FIELD-SYMBOLS : <FS_ANY> TYPE ANY.
Assign (FIELD_NAME) to <FS_ANY>.
Does not work (I guess because of 'type any')
WRITE: <FS_ANY>-MATNR.
ENDFUNCTION.
How can I solve this problem?
Thanks,
KonradThis code is far from perfection...But at least it could help you to find the right track -;)
REPORT ydummy_atg.
DATA: w_mara TYPE STANDARD TABLE OF mara.
START-OF-SELECTION.
SELECT *
INTO TABLE w_mara
FROM mara.
PERFORM test TABLES w_mara.
*& Form test
FORM test TABLES t_mara.
DATA: field_name(30) VALUE 'T_MARA',
new_line TYPE REF TO data,
flag TYPE c,
w_tabix TYPE sy-tabix.
FIELD-SYMBOLS : <fs_any> TYPE ANY,
<l_line> TYPE ANY,
<l_field> TYPE ANY.
ASSIGN (field_name) TO <fs_any>.
CREATE DATA new_line LIKE LINE OF t_mara.
ASSIGN new_line->* TO <l_line>.
LOOP AT t_mara.
MOVE t_mara TO <l_line>.
ASSIGN COMPONENT 2 OF STRUCTURE <l_line> TO <l_field>.
<l_field> = <l_line>.
WRITE:/ <l_field>.
ENDLOOP.
ENDFORM. " test
Greetings,
Blag. -
How to use field symbols while creating a new RFC Bapi
Hi all,
I have written a RFC Bapi in the traditional way.
I need to replace all with field symbols (import. export. tables and source code).
What is the syntax ?
Any sample codng will be more helpful.
Regards
SenthilPlease search for available information on "field symbols" before posting
Thread locked
Thomas -
How can i write the bellow code using field symbols
data : it_mara type table of mara.
select * from mara
into it_mara.
delete it_mara where matnr = '100-100'
and meins = 'KG'.
if i do the same by using field symbols
i am getting data into <it_mara>
but
delete <it_mara> where matnr = '100-100'
and meins = 'KG'.
is showing syntax error
how to correct the error ?I think, DELETE does not allows to dynamically define the logical expression for the WHERE clausule.
Have you tried by filtering data in SELECT statement??
Something like:
if dataBase = 'MARA'.
append 'MATNR <> '100-100'' to Itab_Where[].
append 'AND MEINS <> 'KG'' to Itab_Where[].
endIf.
select * from (dataBase) where (Itab_Where) into table <my_table>.
this is possible, but I don't know if this fits your requirements. -
How to populate one internal table from another using field symbols
Hi Gurus,
I have a problem. I have to populate one internal table (sructure t_otput) from another internal table (sructure t_from) using field symbol.
Structure for from table.
types: begin of t_from,
year(4) type c,
ww(2) type c,
site type marc-werks,
demand type i,
end of t_from.
Structure for output table.
types: begin of t_display,
title(30),
WW1(10),
WW2(10),
WW3(10),
end of t_display.
The from table looks like this:
Year | WW | Site | Demand
2005 | 1 | OR1 | 12.00
2005 | 2 | OR1 | 13.00
2005 | 3 | OR1 | 14.00
The display table which has to be populated should look like this:
Title | WW1 | WW2 | WW3
OR1 | | |
Demand | 12.00 | 13.00 | 14.00
How to populate display table using field symbol?
Please give code snippets
Thanks,
GopalGopal,
Here is the code, however I am not vary clear about the ORG1 and Demand display that you have shown in the display. I am sure with this code it should not be a big deal to tweak in whatever manner you want.
TABLES : marc.
TYPES: BEGIN OF type_display,
title(30),
ww1(10),
ww2(10),
ww3(10),
END OF type_display.
TYPES: BEGIN OF type_from,
year(4) TYPE c,
ww(2) TYPE c,
site TYPE marc-werks,
demand TYPE i,
END OF type_from.
data : t_from type table of type_from,
t_display type table of type_display.
field-symbols : <fs_from> type type_from,
<fs_display> type type_display.
data : wa_from type type_From,
wa_display type type_display.
wa_from-year = '2005'.
wa_from-ww = '1'.
wa_from-site = 'OR1'.
wa_from-demand = '12.00'.
insert wa_from into table t_from.
wa_from-year = '2005'.
wa_from-ww = '2'.
wa_from-site = 'OR1'.
wa_from-demand = '13.00'.
insert wa_from into table t_from.
wa_from-year = '2005'.
wa_from-ww = '3'.
wa_from-site = 'OR1'.
wa_from-demand = '14.00'.
insert wa_from into table t_from.
data : variable(3) type c.
field-symbols : <fs_any> type any.
break-point.
Loop at t_from assigning <fs_from>.
variable = 'WW'.
wa_display-title = <fs_from>-site.
concatenate variable <fs_from>-ww into variable.
assign component variable of structure wa_display to <fs_any>.
<fs_any> = <fs_from>-demand.
endloop.
append wa_display to t_display.
clear wa_display.
loop at t_display assigning <Fs_display>.
write :/ <fs_display>.
endloop.
Note : Please award points if this helps you.
Regards,
Ravi -
Very Urgent: how to define field symbols in class using se24 Points assured
hi all
I am new to abap oo programming. I am using se24 to build a class
where some methods have code which involves working with field sybmols but i am not able to figure out way for how to define field symbols in the attributes section.
I tried defining like : fld_sym type ref to dbtab-fld
but in the method implementation if i try to use it like assign fld to <fld_sym> there it says fld_sym is not defined as a field symbol.
So can anyone please guide me how to define field symbols in se24.
Also what should be the general steps while creating a class using se24.
Points assured
thanksHi
Global classes are like Global fun modules in which the Methods and code is already written and is mainly used for Reusability purpose.
Goto SE24 tcode and see the std global classes like
CL_ABAP_CHAR_UTILITIES
see the links
chk out the links below:
General Tutorial for OOPS
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/e8a1d690-0201-0010-b7ad-d9719a415907
Have a look at these links for OO ABAP.
http://www.sapgenie.com/abap/OO/
http://help.sap.com/saphelp_nw04/helpdata/en/c3/225b5654f411d194a60000e8353423/content.htm
http://www.esnips.com/doc/375fff1b-5a62-444d-8ec1-55508c308b17/prefinalppt.ppt
http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
http://www.esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt
http://www.allsaplinks.com/
http://www.sapgenie.com/abap/controls/index.htm
http://www.esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
http://www.esnips.com/doc/0ef39d4b-586a-4637-abbb-e4f69d2d9307/SAP-CONTROLS-WORKSHOP.pdf
http://help.sap.com/saphelp_erp2005/helpdata/en/ce/b518b6513611d194a50000e8353423/frameset.htm
SDN Series:
https://www.sdn.sap.com/irj/sdn/developerareas/abap?rid=/webcontent/uuid/35eaef9c-0b01-0010-dd8b-e3b0f9ed7ccb [original link is broken]
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCABA/BCABA.pdf
Basic concepts of OOPS
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/b6cae890-0201-0010-ef8b-f970a9c41d47
https://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/1591ec90-0201-0010-3ba8-cdcd500b17cf
https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/com.sap.km.cm.docs/library/webas/abap/abap%20code%20samples/alv%20grid/abap%20code%20sample%20to%20display%20data%20in%20alv%20grid%20using%20object%20oriented%20programming.doc
http://www.henrikfrank.dk/abapuk.html
http://www.erpgenie.com/abap/OO/
Reward oints if useful,
Aleem. -
Can I use field symbol in AT events? How?
Hi all,
I want to use field symbol in <b>AT END OF</b> event
Can I use field symbol in such event as it takes table fields only.
Kinldy look in to pseudo:
Loop itab.
AT END OF <FS1>.
ENDAT.
Endloop.
I tried in my program but it's giving me a short dump.
If it is possible to use field symbol in AT events, kindly tell me how..??
Thanks in Advance.
SagarHi,
i don't know your reqirement but it is possible:
DATA: t1(4), t2 TYPE i.
FIELD-GROUPS: header.
INSERT t2 t1 INTO header.
t1 ='AABB'. t2 = 1. EXTRACT header.
t1 ='BBCC'. t2 = 2. EXTRACT header.
t1 ='AAAA'. t2 = 2. EXTRACT header.
t1 ='AABB'. t2 = 1. EXTRACT header.
t1 ='BBBB'. t2 = 2. EXTRACT header.
t1 ='BBCC'. t2 = 2. EXTRACT header.
t1 ='AAAA'. t2 = 1. EXTRACT header.
t1 ='BBBB'. t2 = 1. EXTRACT header.
t1 ='AAAA'. t2 = 3. EXTRACT header.
t1 ='AABB'. t2 = 1. EXTRACT header.
SORT BY t1 t2.
*Here begins the definition of the field symbols
FIELD-SYMBOLS:
<t1> TYPE ANY,
<t2> TYPE ANY.
ASSIGN t1 TO <t1>.
ASSIGN t2 TO <t2>.</b>
LOOP.
AT FIRST.
WRITE 'Start of LOOP'.
ULINE.
ENDAT.
AT NEW <t1>.
WRITE / ' New T1:'.
ENDAT.
AT NEW <t2>.
WRITE / ' New T2:'.
ENDAT.
WRITE: /14 t1, t2.
AT END OF <t2>.
WRITE / 'End of T2'.
ENDAT.
AT END OF <t1>.
WRITE / 'End of T1'.
ENDAT.
AT LAST.
ULINE.
ENDAT.
ENDLOOP.
Regards,
Gianpietro -
How to create field catalog using field-symbols in normal alv report?
hi all,
how to create field catalog using field-symbols in normal alv report? i.e, using function modules...reuse_alv_list_display/grid_display?
regards,
jackHI
LIKE THIS
TYPE-POOLS : slis.
DATA : t_fieldcat TYPE slis_t_fieldcat_alv,
st_fieldcat TYPE slis_fieldcat_alv.
st_fieldcat-fieldname = 'STATUS'.
st_fieldcat-seltext_l = 'STATUS INDICATOR'.
st_fieldcat-outputlen = 17.
APPEND st_fieldcat TO t_fieldcat.
CLEAR st_fieldcat.
st_fieldcat-fieldname = 'VBELN'.
st_fieldcat-do_sum = ' '.
st_fieldcat-seltext_l = 'Sales Document No.'.
st_fieldcat-outputlen = 10.
APPEND st_fieldcat TO t_fieldcat.
CLEAR st_fieldcat.
st_fieldcat-fieldname = 'AUDAT'.
st_fieldcat-do_sum = ' '.
st_fieldcat-seltext_l = 'Document Date'.
st_fieldcat-outputlen = 10.
APPEND st_fieldcat TO t_fieldcat.
CLEAR st_fieldcat.
st_fieldcat-fieldname = 'VBTYP'.
st_fieldcat-do_sum = ' '.
st_fieldcat-seltext_l = 'Document Type'.
st_fieldcat-outputlen = 4.
APPEND st_fieldcat TO t_fieldcat.
CLEAR st_fieldcat.
st_fieldcat-fieldname = 'AUART'.
st_fieldcat-do_sum = ' '.
st_fieldcat-seltext_l = 'Category'.
st_fieldcat-outputlen = 1.
APPEND st_fieldcat TO t_fieldcat.
CLEAR st_fieldcat.
st_fieldcat-fieldname = 'AUGRU'.
st_fieldcat-do_sum = ' '.
st_fieldcat-seltext_l = 'Reason'.
st_fieldcat-outputlen = 3.
APPEND st_fieldcat TO t_fieldcat.
CLEAR st_fieldcat.
st_fieldcat-fieldname = 'NETWR'.
st_fieldcat-do_sum = 'X'.
st_fieldcat-seltext_l = 'Net Amount'.
st_fieldcat-outputlen = 15.
APPEND st_fieldcat TO t_fieldcat.
CLEAR st_fieldcat.
st_fieldcat-fieldname = 'WAERK'.
st_fieldcat-do_sum = ' '.
st_fieldcat-seltext_l = 'Unit'.
st_fieldcat-outputlen = 5.
APPEND st_fieldcat TO t_fieldcat.
CLEAR st_fieldcat.
*sortinfo
st_sort-fieldname = 'AUART'.
st_sort-up = 'X'.
st_sort-subtot = 'X'.
APPEND st_sort TO t_sort.
CLEAR st_sort.
st_sort-fieldname = 'VBTYP'.
st_sort-up = 'X'.
st_sort-subtot = ' '.
APPEND st_sort TO t_sort.
CLEAR st_sort.
st_sort-fieldname = 'WAERK'.
st_sort-up = 'X'.
st_sort-subtot = 'X'.
APPEND st_sort TO t_sort.
CLEAR st_sort.
st_sort-fieldname = 'VBELN'.
st_sort-up = ' '.
st_sort-subtot = 'X'.
APPEND st_sort TO t_sort.
CLEAR st_sort.
CALL FUNCTION 'REUSE_ALV_EVENTS_GET'
EXPORTING
i_list_type = 0
IMPORTING
et_events = it_eventcat
EXCEPTIONS
list_type_wrong = 1
OTHERS = 2.
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
IF grid = 'X'.
CALL FUNCTION 'REUSE_ALV_GRID_DISPLAY'
EXPORTING
I_INTERFACE_CHECK = ' '
I_BYPASSING_BUFFER = ' '
I_BUFFER_ACTIVE = ' '
i_callback_program = g_program
I_CALLBACK_PF_STATUS_SET = 'SET_PF_STATUS'
I_CALLBACK_USER_COMMAND = ' '
I_CALLBACK_TOP_OF_PAGE = 'TOP_OF_PAGE'
I_CALLBACK_HTML_TOP_OF_PAGE = ' '
I_CALLBACK_HTML_END_OF_LIST = ' '
I_STRUCTURE_NAME =
I_BACKGROUND_ID = ' '
I_GRID_TITLE =
I_GRID_SETTINGS =
IS_LAYOUT =
it_fieldcat = t_fieldcat
IT_EXCLUDING =
IT_SPECIAL_GROUPS =
it_sort = t_sort
IT_FILTER =
IS_SEL_HIDE =
I_DEFAULT = 'X'
I_SAVE = ' '
IS_VARIANT =
IT_EVENTS =
IT_EVENT_EXIT =
IS_PRINT =
IS_REPREP_ID =
I_SCREEN_START_COLUMN = 0
I_SCREEN_START_LINE = 0
I_SCREEN_END_COLUMN = 0
I_SCREEN_END_LINE = 0
I_HTML_HEIGHT_TOP = 0
I_HTML_HEIGHT_END = 0
IT_ALV_GRAPHICS =
IT_HYPERLINK =
IT_ADD_FIELDCAT =
IT_EXCEPT_QINFO =
IR_SALV_FULLSCREEN_ADAPTER =
IMPORTING
E_EXIT_CAUSED_BY_CALLER =
ES_EXIT_CAUSED_BY_USER =
TABLES
t_outtab = it_final
EXCEPTIONS
program_error = 1
OTHERS = 2
IF sy-subrc <> 0.
MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
REWARD IF USEFULL -
How to code this using FIELD SYMBOL ?
Hello All,
I never used field symbols before and I think this is where I should use field symbols in my program.
I have a selection parameter period (p_period) and based on the p_period value(XX), I need to display the HSLXX, KSLXX from table GLT0 using field symbols. Can anyboby help me?
Thanks,
Chandni ReddyRight, you can use field-symbols, here is a example.
report zrich_0002.
data: xGLT0 type GLT0 .
data: field_name(20) type c.
field-symbols: <fs> .
parameters: p_per(2) type n.
* Read a line from table
select Single * from glt0 into xglt0.
* Build the field name that you want to access
concatenate 'XGLT0-HSL' p_per into field_name.
* Assign it
assign (field_name) to <fs>.
* Write it
write:/ <fs>.
Regards,
Rich Heilman
Maybe you are looking for
-
Hi Everyone, I tried posting this in the general flash forum with no sucess. I'm guessing my question is more geared towards AS3 anyway. So here goes: I've created a flash intro for a website and I have it setup so that in the first frame of the intr
-
Various things shutting my computer down
read my later post in the thread about the newest problem i was having this problem a few days ago and decided to just reinstall (nothing else going on one night so i redid everything), but this problem is still happening. it started after upgrading
-
Display as Text: Source or computation/process?
I have a bunch (about 10) of Display as Text (does not save state) items on a page. The source for all these items is a single row in some table. I see 2 alternatives to populating these items 1. Specify the Source attribute for each item as the SQL
-
Hi All, How can i fetch the name of active tab at level 1 of TLN in a variable so that i can use it in a different iView. Actually the requirement is to get the Name of active tab from TLN iView and use it in masthead iView. Please suggest. Regards,
-
How to edit Theme Backgrounds in Keynote?
Stuck with a little conundrum: I'm trying to edit the background of the Crayon Line theme (but it is the same for other themes) - More specifically I'm trying to move the actual black and red horizontal crayon line. The problem I have is that I haven