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DSPFFD, DSPOBJD.

DSPFFD, DSPOBJD.

• Because commands are compiled and stored in a form, they can be run immediately and it is faster than entering the commands in command LINE.
• Some CL commands cannot be EXECUTED in command line, so we NEED CL program for them. EG. RTVSYSVAL, RTVDTAARA
• Cl program can be tested and debugged LIKE other HLL program.

By the COMMAND CVTDAT.

By the command CVTDAT.

• *ISO – YYYY-MM-DD
• *USA – MM/DD/YYYY
• *EUR – DD.MM.YYYY
• *JUL – YY/DDD
• *JOB
• *SYSVAL
• *MDY
• *DMY
• *YMD
• *JUL
• *ISO is the default date TYPE.
• Format of system value is MM/DD/YY

By USING RTVSYSVAL command we ca retrieve a date in CL. The various date FORMATS are *JOB, *SYSVAL, *MDY, *DMY, *YMD, *JUL etc. [if you want system TIME, you have to specify *time in the format].

By using RTVSYSVAL command we ca retrieve a date in CL. The various date formats are *JOB, *SYSVAL, *MDY, *DMY, *YMD, *JUL etc. [if you want system time, you have to specify *time in the format].

The CL program is USING a value passed from another PROCESSING program.

The CL program is using a value passed from another processing program.

By USING a RETURN COMMAND.

By using a RETURN command.

To PASS variables from a CL or RPG program to ANOTHER CL or RPG program.

To pass variables from a CL or RPG program to another CL or RPG program.

An area of transfer WITHIN a CL program from which to CONTINUE PROCESSING directed by a GOTO COMMAND.

An area of transfer within a CL program from which to continue processing directed by a GOTO command.

FIRST we get the data from the data AREA by using the COMMAND RTVDTAARA. If you WANT edit the data of the data area USE CHGDTAARA command else if you want view the data of the data area use DSPDTAARA command.

First we get the data from the data area by using the command RTVDTAARA. If you want edit the data of the data area use CHGDTAARA command else if you want view the data of the data area use DSPDTAARA command.

RTVDTAARA DTAARA (*LDA) RTNVAR (&VAR).

RTVDTAARA DTAARA (*LDA) RTNVAR (&var).

To CHANGE the VALUE ASSOCIATED with a CL VARIABLE.

To change the value associated with a CL variable.

USING the SNDPGMMSG COMMAND - SEND PROGRAM MESSAGE.

Using the SNDPGMMSG command - Send Program Message.

• This command monitors the messages send to the program message QUEUE for the conditions specified in the command. There are TWO levels of MONMSG COMMANDS.
• Program level is specified IMMEDIATELY following the last declares command in your CL program. You can use as many as 100 program level MONMSG commands.
• Command level immediately follows a CL command. You can use as many as 100 command level MONMSG commands for a single command.
• If you MONITOR a message by giving message ID as CPF0000 then any error will come to MONMSG routine.

ERROR TRAPPING.

Error trapping.

• CHAR
• DEC
• LGL

By DECLARING the FIELD (DCL) and placing an AMPERSAND in FRONT of the variable name.

By declaring the field (DCL) and placing an ampersand in front of the variable name.

DSPDBR - DISPLAY DATABASE RELATIONS.

DSPDBR - Display Database Relations.

SNDRCVF - Send/Receive FILE.

SNDRCVF - Send/Receive File.

SNDF - SEND FILE.

SNDF - Send File.

By TWO ways we can SET:

• POSDBF with PARAMETER “File Position” set to “*START”.
• OVERDBF which allows to position the file by Key Value, by RRN value, or set to *START.

By two ways we can set:

Thro’ RCVF command we can read a file. To read all the records we should use MONMSG command with MSGID (CPF0864). So if the END of file reached then the MESSAGE CPF0864 is sent to the program so the variable will not be CHANGED by the RCVF command.

Thro’ RCVF command we can read a file. To read all the records we should use MONMSG command with MSGID (CPF0864). So if the end of file reached then the message CPF0864 is sent to the program so the variable will not be changed by the RCVF command.

RCVF - RECEIVE FILE.

RCVF - Receive File.

OVRDBF FILE (FILENAME) POSITION (*KEYX a B c) and RCVF.

OVRDBF FILE (filename) POSITION (*KEYx a b c) and RCVF.