Rational Developer for System z, Version 8.0

Data Element call

To display the contents of this section, you must select a Data Element call in the tree or click Add Data Element. You must specify where this Data Element is to be located in the generated program, its format, and its corresponding data name. From here, you can also access the Data Element editor tabs.

Data Element
The called Data Element is displayed here. You can change it by clicking Change. The values already entered in the call Definition are kept and automatically apply to the new Data Element.
COBOL position
You indicate the placement and the sequence in which the lines entered in this tab are to be generated. These characters form the first two characters of a sequencing number, with the value in the line number as the last three digits.
Table 1. Values for the COBOL position
Value Meaning
For a batch program
AA to ZZ and 0A to 0Z These values cause the lines entered in this tab to be generated at the beginning of the WORKING-STORAGE SECTION.
These lines are generated:
  • Before the description of the Data Structures whose organization is W: file description in Working and whose code in program matches this prefix or is greater than it,
  • Before the description of the Data Structures whose organization is L: Working with placement, and whose COBOL position matches this prefix or is greater than it.
00 to 09, 1A to 19... 9A to 99 The lines entered in this tab will be generated in the WORKING-STORAGE SECTION, after all the Data Structures whose COBOL position is lower than this prefix
For a transactional program
AA to 0Z The description is generated in the WORKING-STORAGE SECTION.
00 to 99 The description is generated in the LINKAGE SECTION.
AA and 00 These values are used for automatically generated data.
99 With a Line number = 999, this value is used for the PROCEDURE DIVISION statement. Therefore, you can use it to create a line with a sequencing number 99999, which replaces the PROCEDURE DIVISION line automatically generated.
$n This value represents a parameterized value in a Macro.
Line number
This line number, constituted of three digits, is concatenated with the two characters of the COBOL position. The line number can be:
  • 0 to 999: It is advised to number the lines, starting with 10, by intervals of 10, to facilitate any future insertion
  • $n0 to $n9: In a Macro, only the first two characters of the Line number can be parameterized.
Line type
Select which format is to be used for the Data Element call:
  • E: Input format,
  • I: Internal format,
  • S: Output format.
Text before
This field is divided into two subfields:
  • The Level or section, constituted of the first 17 positions of the field, In this subfield, you must enter the COBOL level number (01, 05...) or the section name (LINKAGE SECTION,...) in which this line is to be generated.
  • The work area declaration, which starts from position 18, to the end of the field. You must declare the beginning of the data name, which is to be concatenated with the Data Element code to constitute the actual data name.
    So you must enter w-ddss- (without omitting the dashes), where:
    • w = WORKING-STORAGE SECTION prefix (alphabetic or numeric),
    • dd = Data Structure code, including the work area,
    • ss = Segment code,
    When it is concatenated with the Data Element code, the data name becomes: w-ddss-eeeeee (with eeeeee as the Data Element code).
    Note: When a Data Element defined in the repository is called in a work and linkage area, you must enter the beginning of the data name in this field. Otherwise the generated code is formatted: 03 DDSS-DELCO PICTURE X.
Text after
In this field, you must enter the characters which are to be inserted in the generated code, after the data name. Most often, you enter a period ('.') but you can also enter other values (for example: VALUE SPACE).
Occurs
You must indicate a number in this field when the data name (entered in the Comment field if you are viewing a comment call, or in the Text before field if you are viewing a Data Element call) repeats several times. You enter the maximum number of occurrences. This value is numeric, on five characters maximum.
An entry in this field causes the generation of the following three indexes (ddss = Segment code):
  • IddssM initialized to the value entered.
  • IddssL initialized to zero. This index can be used to load the table. It keeps track of the actual table size
  • IddssR initialized to zero. This index can be used for table searches.

In a Macro, you can parameterize it by assigning it a $n value

If you click the buttons in the bottom part of the section, you open the corresponding Data Element tabs.

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