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BC430
Lesson: Basic Data Types
Solution 2: Simple and Nested Structures
Task 1:
Create simple structures that you can use later in ABAP programs.
1.
In the Dictionary, create a structure
ZNAME##
and include the following
two components in the structure. Use the data elements that you created in
previous exercises for typing.
Component
Component Type
Description
FIRSTNAME
own
first name
LASTNAME
own
last name
a)
Start SE11 and enter the name of the structure in the
Data type
input
field.
b)
Choose
Create
and select
Structure
in the following dialog.
c)
Provide a short description and enter the specified components.
Activate the structure so that it is globally known.
2.
Create a structure
ZADRESS##
and enter the four following components:
Component
Component Type
Description
STREET
S_STREET
Street
NR
S_NO
House number
ZIP
POSTCODE
Post code
CITY
S_CITY
Place of residence
a)
Proceed in the same way as in the previous part of the exercise.
Task 2:
Create a nested structure, so that you can use it later in ABAP programs.
1.
Create a structure
ZPERSON##
in the Dictionary.
a)
Proceed in the same way as in the previous part of the exercise.
Continued on next page
2006/Q2
© 2007 SAP AG. All rights reserved.
33
Unit 2: Data objects in the ABAP Dictionary
BC430
2.
Add the structure
ZADRESS##
as an Include structure to the ZPERSON##
structure. In addition, take on the structure
ZNAME##
in the ZPERSON##
structure as a nested structure under the component name NAME
a)
Include the address either via the menu
Edit->Include->Insert
or, in the
Component
column, write the key word
.INCLUDE
.
Caution:
The point before the key word is important.
For the second structure, which you want to take on as a deep structure,
enter any component name (e.g. 'Name').
Component
Component Type
Description
.include
ZADRESS##
Address structure
NAME
ZNAME##
Refers to the name
structure
Continued on next page
34
© 2007 SAP AG. All rights reserved.
2006/Q2
BC430
Lesson: Basic Data Types
3.
Enter an ABAP program
ZBC430_##_STRUCT_NESTED
. Create a
structured data object (
wa_person
) in this program of the type
ZPERSON##
.
Fill the components of this data object with any personal data and output
this data in a list.
a)
See the source code excerpt from the model solution.
Result
Source text excerpt:
SAPBC430S_STRUCT_NESTED
REPORT
sapbc430s_struct_nested.
*Replace ## by Your group- or screennumber and
*uncomment the ABAP-coding
DATA wa_person TYPE zperson##.
START-OF-SELECTION.
wa_person-name-firstname = 'Harry'.
wa_person-name-lastname = 'Potter'.
wa_person-street = 'Privet Drive'.
wa_person-nr = '3'.
wa_person-zip = 'GB-10889'.
wa_person-city = 'London'.
WRITE: /
wa_person-name-firstname ,
wa_person-name-lastname ,
wa_person-street ,
wa_person-nr ,
wa_person-zip ,
wa_person-city .
2006/Q2
© 2007 SAP AG. All rights reserved.
35
Unit 2: Data objects in the ABAP Dictionary
BC430
36
© 2007 SAP AG. All rights reserved.
2006/Q2
BC430
Lesson: Basic Data Types
Exercise 3: Table Types (Internal Tables /
ITABs)
Exercise Objectives
After completing this exercise, you will be able to:
•
Create table types and use them in ABAP programs
Business Example
For local data retention, you define a table type that keeps the data sorted.
Task:
Create simple internal tables on the basis of an existing structure, so that you
can use them later in ABAP programs.
1.
Create a table type
ZIT_SFLIGHT##
in the Dictionary. The table type
should be based on the line type of the database table
SFLIGHT
and be
sorted according to the flight date (
FLDATE
)
2.
Enter an ABAP program
ZBC430_##_ITAB_SORTED
. In this program,
create a structured data object (
wa_sflight
) of the type
SFLIGHT
as the
work area, and an internal table on the basis of the table type just defined.
From the SFLIGHT table, select the data of a carrier (e.g.
'JL'
) in the work
area and output this as an unsorted list.
3.
Extend the program as follows. Insert a line (ABAP command
ULINE
) in
the list. Load the same data again via the
SELECT
command with Array
Fetch into the internal table of the type
ZIT_SFLIGHT##
and output the
content of the table using the
LOOP
command in the same list. Compare the
order of the data in both list excerpts.
2006/Q2
© 2007 SAP AG. All rights reserved.
37