PL/I Include Code

The function Generate PL/I Include Code generates a record buffer for use in PL/I programs based on a Predict file object.

In addition, an Adabas format buffer can also be generated if required for files of the following types:

  • Adabas file (file type A) with parameter Adabas SQL usage = N

  • Adabas userview (file type U)

This document covers the following topics:

Calling the Function

The Generate PL/I Include Code screen is displayed with function code G and object code PL in a Predict main menu, or with the command GENERATE PLI. 

10:13:10             *****  P R E D I C T  *****             2007-05-31
Plan   0                 - Generate PLI Copy Code -

File ID ...................*
Save as member .............            Save in library .... PLILIB
Overwrite option ........... Y  (Y,N)   Op. system member ..
Punch / output ............* N
List generated code ........ Y  (Y,N)   List offsets ......* N
Generate format buffer ....* N          Adabas version ....* I7
Check field name ..........* A          Field name prefix .. ADABAS_
Start level ................ 1  (0-40)  Field name suffix ..
Level number increment ..... 1  (1-40)  Validate ........... _
Level shift increment ...... 3  (0-9)   Truncation ........* R
Nr. of abstract lines ...... 4  (0-16)  Align .............* N
Generate initial value ....* N          Static ............. N (Y,N)
Structure as char .......... N  (Y,N)   Numeric sign ......* T
With DCL ................... N  (Y,N)   Position of sign ..* R
Record buffer name .........
Format buffer name .........

Command ===>
Enter-PF1---PF2---PF3---PF4---PF5---PF6---PF7---PF8---PF9---PF10--PF11--PF12---
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Parameters

Values for fields which have been locked by your data dictionary administrator cannot be overwritten. These fields are skipped when positioning the cursor with the TAB key. See Generation Defaults.

Presettings
The parameters below can be changed in the Modify PL/I Defaults screen. See Generation Defaults.
Library system Library system for which the generated code is punched. Determines which additional cards need to be punched. An operating system member must be entered for the additional cards to be generated. See Parameters Specifying the Form of Output for more information.
Parameters
The parameters Save as member, Save in library, Overwrite option, Op. system member, Punch/output, Workfile name and List generated code are described in the section Parameters Specifying the Form of Output.
File ID ID of the Predict file object from which the definitions are to be generated. Enter an asterisk to display a selection screen. Alternatively, use an asterisk as a wildcard. For example, enter A* to display IDs beginning with A only.
List offsets
Y The offset of each item in the record buffer structure (relative to the beginning of the structure) in decimal and hexadecimal formats is to be included as a comment. The total length of each buffer is also included.
P As above, but the absolute position (offset+1) is included as a comment.
L The total lengths of the record buffer and the format buffer are to be included as a comment.
V The file number and the calculated lengths of the record buffer and the format buffer are to be generated as constants in the include code. The name of the file number constant will be the record buffer name prefixed by N_. The name of each length constant will be the appropriate buffer name prefixed by L_. Each name is prefixed, suffixed, validated and truncated in the same way as any other field name.
N No offset.
Generate format buffer
The contents of the format buffer will correspond exactly to the contents of the record buffer. Only valid for files of type A (with parameter Adabas SQL usage set to N) or for files of type U.
Valid values:
Y Adabas format buffer is to be generated. Adabas groups, standard formats and lengths are used whenever possible. The resulting format buffers are then as short as possible.
F Full format buffer is to be generated. Length and format of Adabas fields are included.
N No format buffer is to be generated.

Note:
If you are generating for a WANG environment, you must set this parameter to F or N.

Adabas version The version of Adabas for which the include code is to be generated. Enter an asterisk for valid values or see table in the section Adabas Version for more information.
Check field names
A The field names must be unique throughout the entire structure.
Y Structure levels are included in the validation check of the field names: if two fields have the same name, they must be separated by at least one field with a different name and a lower level number.
N The field names in the generated PL/I code will not be checked for uniqueness.
Start level The starting level number to be used for the generated statements.

Note:
For fields within a redefinition, Start level is always 1.

Field name prefix The prefix appended to each field name generated.
Field name suffix The suffix appended to each field name generated.
Level number increment The increment to be used when assigning level numbers to the generated statements. This parameter is evaluated in conjunction with parameter Start level. See table below.

Note:
This parameter is ignored for fields within a redefinition.

Start Level Level number increment (Example) Level Numbers
0 5 1, 6, 11...
1 5 1, 5, 10...
2 - 40 5 n, n+5, n+10...
Level shift increment The number of positions to be shifted right when a level number which is higher than the current level number is encountered.

Note:
This parameter is ignored for fields within a redefinition.

Validate
Determines how invalid characters are handled.
blank Invalid characters in a field name will result in an error message but will not be modified.
rep.char Invalid characters in a field name are replaced by this character. Valid replace characters: letters A-Z, digits 0-9, $, §, # and _ (underscore).
* Invalid characters in a field name are deleted.
Nr. of abstract lines The number of Predict abstract lines per field to be included in the generated code.
Truncation
Specifies which characters are deleted if a generated field name is too long:
L from the left
R from the right
M from the middle
A warning is given if field names are truncated.
Generate initial value
Y Statements are generated to initialize the structure with the value for Init value defined for the field objects in Predict. Fields with no value defined for Init value are initialized with zeros or spaces.
S Only fields which have a value defined for Init value in the corresponding Predict object are initialized.
N No initialization.
Align
Determines which fields are to be aligned. In the record buffer and in the format buffer fields are aligned on the boundary shown in the table in the section Field Format and PL/I Include Code.

Note:
This parameter only takes effect with fields that have the PL/I attribute FIXED BIN or FLOAT DEC.

Y All fields are aligned.
N No fields will be aligned. Predict will add the PL/I keyword UNAL to all appropriate fields.
S Fields are aligned only if the 3GL specification Synchronized of the corresponding Predict object is set to S. Otherwise Predict adds the PL/I keyword UNAL.
Static The structure is declared with the attribute STATIC.
Structure as char The entire generated structure is declared at the end of the record buffer as a single character string.
Numeric sign Specifies which of the PL/I picture characters T, I or R is to be used for the representation of numeric values of format packed with sign or unpacked with sign.
With DCL
Y The generated code is preceded by a declare statement DCL and ends with a semicolon (not a comma). PL/I copy code can be inserted in any position of a PL/I program, it does not have to be inserted at the beginning.
Position of sign
Defines the position of the sign in a numeric field:
R right
L left
Record buffer name Specifies the name of the record buffer in the generated structure. If omitted, the file ID is used.
Format buffer name Specifies the name of the format buffer in the generated structure. If omitted, the file ID prefixed by FORBUF_ is used.

Generate PL/I Include Code in Batch Mode

Command: GENERATE PLI

Enter parameters on next line in positional or keyword form. File ID is obligatory, all other parameters are optional.

Field Keyword Position
File ID FILE-ID 1
Save as member MEM 2
Save in library LIB 3
Overwrite option REPLACE 4
Op. system member OS-MEMBER 5
Start level START-LEVEL 6
Field name prefix PREFIX 7
Level number increment LEVEL-INCREMENT 8
Field name suffix SUFFIX 9
Level shift increment LEVEL-SHIFT 10
Nr. of abstract lines NR 11
Validate VALIDATION 12
Generate initial value INIT 13
Truncation TRUNCATION 14
Generate format buffer FORMAT-BUFFER 15
List offsets OFFSET 16
Structure as char STRUCTURE 17
List generated code LIST 18
Static STATIC 19
Punch / output PUNCH 20
Record buffer name RECORD-BUFFER-NAME 21
Format buffer name FORMAT-BUFFER-NAME 22
Align SYNC 23
With DCL DCL 24
Adabas version ADA-VER 25
Check field name CHECK-NAME 26
Numeric sign NUM-SIGN 27
Position of sign POS-SIGN 28
Workfile name (see note below)  WORKFILE-NAME 29
If Entire System Server is used  
- DB-ID NP-DBID 30
- Data set NP-DSNAME 31
- Volume NP-VOLSER 32
- Library NP-LIB 33
- Sublibrary NP-SUBLIB 34
- Member type NP-MEMTYPE 35
- VSAM catalog NP-VSAMCAT 36

If a parameter is not specified, the default value is taken.

Note:
You cannot specify a value other than blank (' ') for WORKFILE-NAME on mainframes.

Parameters NP-LIB, NP-SUBLIB and NP-MEMTYPE must be specified if the generated code is written to workfile 1 (Punch/output=Y) and Library system=3.

Names in PL/I Include Code

The following rules apply to the generation of names for PL/I copy code.

  • Field names are derived from Predict field objects: either the Field Name Synonym for PL/I or, if none exists, the Predict field ID.

  • Alphabetic characters (letters) in Predict object IDs, such as file and field IDs, are converted to upper-case.

  • All field names are prefixed, suffixed, validated and if necessary truncated to 31 characters according to the setting of these four options. For example, with Field name prefix set to Adabas/, Field name suffix to *PERSONNELOFFICE, Validate to _ and Truncation to R the following names are generated for a field named "day" of type MC. 

ADABAS_C_HOURS_DAY_PERSONNELOFF
ADABAS_HOURS_DAY_PERSONNELOFFIC

  • If a resulting field name is not unique, an error message may be issued if Check field name is either set to A or Y.

  • The record buffer name and the format buffer name do not receive the prefix and suffix. The value(s) supplied must not contain invalid characters. If the file ID is taken as default record buffer name or, with the prefix FORBUF_, as default format buffer name, it is validated and if necessary truncated.

PL/I Names for Counter Fields - MC or PC

Before each field of type MC or PC, a counter field is generated, with a name created from the name of the MC or PC field prefixed by C_.

For example, a Predict field object HOURS-DAY with no field name synonym for PL/I and with type MC will result in two fields C_HOURS-DAY and HOURS-DAY.

PL/I Names for Additionally Generated Indicator Fields

An additional indicator field prefixed with S_ is generated in the following cases:

  • a field is defined with Suppression option set to U (null allowed)

  • a field of a file of type A, U or B is defined with Suppression option set to R (not null)

Note:
For Adabas fields, the additional indicator field is only generated for the following Adabas versions:

  • I3 or above

  • U1 or above

  • V4 or above.

Field Format and PL/I Include Code

Fields in the PL/I include code have a PL/I clause determined by the length and format of the corresponding Predict field object, as shown in the table below where s is the numeric sign whose content (T, I, or R) and position (left or right) are defined in the PL/I generation defaults; nn+m must not exceed 15; and if m is zero, V(m)9 is omitted.

Predict Format File Type Predict Length PL/I Clause Note
A   nnn  CHAR(nnn)  
B/I   1 BIT(8)  
B   3 BIT(24)  
B/I   2 FIXED BIN(15,0) Aligned at half word boundary (if word length=4)
4 FIXED BIN(31,0) Aligned at word boundary (if word length=4)
B   l=>5 CHAR(l)  
I   8 FIXED BIN(63,0) Aligned at double word boundary (if word length=4)
F   4 FLOAT DEC(6) Aligned at word boundary (if word length=4)
8 FLOAT DEC(16) Aligned at double word boundary (if word length=4)
N/U  

nn.m
(nn+m<16)

PIC '(nn)9V(m)9' If m = 0, V(m)9 is not applicable.

nn.m
(nn+m>15)

CHAR(nn+m)  
NS/US  

nn.m
(nn+m<16)

PIC '(nn)9V(m-1)9s' or
PIC 's(nn-1)9V(m)9'.

s represents the numeric sign, the contents of which (T, I or R) and Position (left or right) depend on the parameters Numeric sign and Position of sign

If m = 0, V(m) 9 is not applicable.

nn.m
(nn+m>15)

CHAR(nn+m)  
P/PS  

nn.m
(nn+m<16)

FIXED(nn+m,m)  

nn.m
(nn+m>15

CHAR(l)  
D D, E   CHAR(10)  
other   FIXED(6)  
T D, E   CHAR(8)  
other   FIXED(12)  
L     BIT(8)  
DT OT, OV   CHAR(9)  
JT, JV   CHAR(25)  
G, GV, GL D, E m  CHAR(m) m=2*n 
JT, JV BV n  CHAR(n)  
BL n  CHAR(n) Field is skipped if no length is specified
MO JT, JV   FLOAT DEC(16)  
OK JT, JV   CHAR(16)  
TK JT, JV   CHAR(8)  
File Type in Predict Predict Format Predict Char. Set Length PL/I Clause Note
OT, OV A, AL any  n  CHAR(n)  
AV there is only one char. set n 

Two-level group is generated:

02 Fieldname
03 Fieldname-LEN FIXED BIN (15,0)
03 Fieldname-TXT CHAR (n)

 
JT, JV A, AV any  n  CHAR(n)  
AL there is only one char. set n  CHAR(n) Field is skipped if no length is specified
D, E A, AL any  n  CHAR(n)  
AV any  n 

Two-level group is generated:

02 Fieldname
03 Fieldname-LEN FIXED BIN (15,0)
03 Fieldname-TXT CHAR (n)

 
A, U A there is only one char. set n CHAR(n)  
AV n 

Two-level group is generated:

02 Fieldname
03 Fieldname-LEN FIXED BIN (15,0)
03 Fieldname-TXT CHAR (n)

 
A(SQL) AT, B A, AV there is only one char. set n  CHAR(n)  

Additional Notes

An automatically generated counter field has the clause FIXED BIN (15,0).

A numeric or binary format field with a length not included in the table above is treated in PL/I include code as an alphanumeric format field and cannot have an initial value generated for it. A warning message is issued.

See also description of parameter Align.

If PL/I include code for DB2 tables/views is generated, the format NS or US is converted to the PL/I format FIXED. Any redefinitions that exist for this field are skipped.

A DB2 large object is generated as locator like an I4 field.

Sample Output 

File ID .. GENERATION-EXAMPLE

 /*******************************************************************/
 /*    THIS RECORD-BUFFER LAYOUT WAS GENERATED BY PREDICT           */
 /*         FOR FILE: GENERATION-EXAMPLE                            */
 /*               ON: 2007-05-31 STARTING AT 13:28:02               */
 /*    FILE-COMMENTS: Example file for the                          */
 /*                   PREDICT generation subsystem.                 */
 /*                   ..                                            */
 /*******************************************************************/
  01 GENERATION_EXAMPLE,
       02 GROUP_1 ,
          03 ELE_N_9V5              PIC '(9)9V(5)9',
          03 GR_IN_GROUP ,
             04 ELE_B_4             FIXED BIN (31,0),
             04 ELE_PS_5V2          FIXED (7,02),
             04 MU_B_4 (5)          FIXED BIN (31,0),
          03 ELE_A_42               CHAR (42),
          03 ELE_F_8                FLOAT DEC (16),
          03 ELE_B_3                BIT(24) UNAL,
       02 C_PC_OCC_7                FIXED BIN (15,0),
       02 PC_OCC_7 (7) ,
          03 PC_ELE_DE_NS_7V3       PIC '(7)9V(2)9T',
          03 C_PC_MC_PS_6V1         FIXED BIN (15,0),
          03 PC_MC_PS_6V1 (11)      FIXED (7,01),
          03 PC_GR ,
             04 PC_ELE_I_2          FIXED BIN (15,0),
             04 PC_PS_20V7          CHAR (14),
 /* >>> DIC1818 WARNING: FORMAT(S) CHANGED ( ' PS ' --> ' A ')      */
          03 PC_ELE_F_4             FLOAT DEC (6),
       02 ELE_D                     FIXED (6,00),
       02 ELE_T                     FIXED (12,00),
       02 ELE_L                     BIT(8),
  01 MU_B_4_STRUCT
       BASED(ADDR(GENERATION_EXAMPLE.MU_B_4)),
       02 MU_RED_B_7                CHAR (7),

File ID .. GENERATION-EXAMPLE

 /* >>> DIC1818 WARNING: FORMAT(S) CHANGED ( ' B ' --> ' A ')       */
       02 MU_RED_US_13              PIC '(12)9T',

  01 MU_B_4_STRUCT1
       BASED(ADDR(GENERATION_EXAMPLE.MU_B_4)),
       02 MU_RED_B_8                CHAR (8),
 /* >>> DIC1818 WARNING: FORMAT(S) CHANGED ( ' B ' --> ' A ')       */
 /*      ++ CONSTANTS FOR RECORD BUFFER LENGTH AND FILE NUMBER      */
  01 L_GENERATION_EXAMPLE           FIXED BIN (15,0) UNAL INIT(674),
  01 N_GENERATION_EXAMPLE           FIXED BIN (15,0) UNAL INIT(231),
 /*******************************************************************/
 /*    THIS FORMAT-BUFFER WAS GENERATED BY PREDICT                  */
 /*         FOR FILE: GENERATION-EXAMPLE                            */
 /*               ON: 2007-05-31 STARTING AT 13:28:03               */
 /*******************************************************************/
  01 FORBUF_GENERATION_EXAMPLE_1 ,
     02 FILLE001 CHAR(34) INIT('AB,2X,AD,AE,AF1-5,AG,2X,AH,AI,1X,A'),
     02 FILLE002 CHAR(34) INIT('LC,2,AM1,AN1C,2,AN1(1-11),AO1,2X,A'),
     02 FILLE003 CHAR(34) INIT('R1,2X,AM2,AN2C,2,AN2(1-11),AO2,2X,'),
     02 FILLE004 CHAR(34) INIT('AR2,2X,AM3,AN3C,2,AN3(1-11),AO3,2X'),
     02 FILLE005 CHAR(34) INIT(',AR3,2X,AM4,AN4C,2,AN4(1-11),AO4,2'),
     02 FILLE006 CHAR(34) INIT('X,AR4,2X,AM5,AN5C,2,AN5(1-11),AO5,'),
     02 FILLE007 CHAR(34) INIT('2X,AR5,2X,AM6,AN6C,2,AN6(1-11),AO6'),
     02 FILLE008 CHAR(34) INIT(',2X,AR6,2X,AM7,AN7C,2,AN7(1-11),AO'),
     02 FILLE009 CHAR(21) INIT('7,2X,AR7,2X,AS,AT,AU.'),
  01 FORBUF_GENERATION_EXAMPLE CHAR(293)
        BASED (ADDR( FORBUF_GENERATION_EXAMPLE_1 )),
 /*++ CONSTANT FOR FORMAT BUFFER LENGTH                             */
  01 L_FORBUF_GENERATION_EXAMPLE    FIXED BIN (15,0) UNAL INIT(293),
 /*******************************************************************/