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| Error using MQSETMP on i5/OS in RPG/ILE |
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| DarkHorse |
 Posted: Wed Nov 10, 2010 2:22 pm Post subject: Error using MQSETMP on i5/OS in RPG/ILE |
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Newbie
Joined: 10 Nov 2010
Posts: 2
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I am trying to set a message property using RPG calling MQSETMP.
I have issued an MQCONN, MQOPEN, MQCRTMH, and am now issuing the MQSETMP message.
I am getting a "Pointer not set for location referenced." error.
The prototype is as follows:
| Code: |
DMQSETMP PR EXTPROC('MQSETMP')
D* Connection handle
D HCONN 10I 0 VALUE
D* Message handle
D HMSG 20I 0 VALUE
D* Options that control the action of MQSETMP
D SETOPT 20A VALUE
D* Property name
D PRNAME 32A VALUE
D* Property descriptor
D PRPDSC 24A
D* Property data type
D TYPE 10I 0 VALUE
D* Length of the Value area
D VALLEN 10I 0 VALUE
D* Property value
D VALUE * VALUE
D* Completion code
D CMPCOD 10I 0
D* Reason code qualifying CompCode
D REASON 10I 0
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I am calling it with:
| Code: |
CALLP MQSETMP(HCONN : HMSG : SETMPOPTS:
PRNAME : SETMPPD : TYPE : VALLEN :
VALPTR : CCODE : REASON)
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SETMPOPTS is the DS of CMQSMPOG, and SETMPPD is the DS of CMQPDG with all of the default values.
I have tried TYPE of "String" (1024), and "Byte String" (8). VALLEN is 22. I think my problem is a combination of PRNAME and VALPTR.
In the Prototype, PRNAME is 32A, and I have no idea what to put in there, so I am putting a string of "JEFFPROPNAME" in it.
I tried to define VALPTR as a pointer to PRPVAL which is 22 long and contains "JEFFPROPVAL".
When I execute, I get this error:
Pointer not set for location referenced.
FDC XY353001 -
xehAS400ConditionHandler (1077960969:1:4:MCH3601:CPF9999:.)
Any insight appreciated. Thanks. |
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| fjb_saper |
| Posted: Wed Nov 10, 2010 9:02 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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What does the relevant manual say should be in those fields? 
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| DarkHorse |
| Posted: Mon Nov 15, 2010 7:17 am Post subject: |
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Newbie
Joined: 10 Nov 2010
Posts: 2
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That's what I have been trying to decipher. In the manuals it says that PRNAME is:
PRNAME (10-digit signed integer) - input This is the name of the property to set. See Property names and Property name restrictions for further information about the use of property names.
Property names
A property name is a character string. Certain restrictions apply to its length and the set of characters that can be used.
A property name is a case-sensitive character string, limited to +4095 characters
But in the prototype for RPG/ILE it has it defined as 32A.
VALUE (10-digit signed integer) - input The value of the property to be set. The buffer must be aligned on a boundary appropriate to the nature of the data in the value.
I am using VALPTR for the parm in my program.
| Code: |
D VALPTR S 16* INZ (%ADDR(PRPVAL))
D PRPVAL S 22A
...
C EVAL VALLEN = 22
C EVAL PRPVAL = 'JEFFPROP'
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The pointer error seems to be related to the VALPTR, but I'm not sure.
If somebody has a sample program in RPG that uses MQSETMP, I could figure out what I am doing wrong.
Thanks. |
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| fjb_saper |
| Posted: Mon Nov 15, 2010 9:24 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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For the property names have you looked at MQ Constants?
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| mqjeff |
| Posted: Tue Nov 16, 2010 2:44 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| fjb_saper wrote: |
| For the property names have you looked at MQ Constants? |
I don't think that's correct. I believe that message properties can have any name you want them to have.
Looking at the c language invocation, everything other than Hconn, Hmsg, Type and ValueLength are passed as pointers. It's not too clear if you are sending PRNAME as a reference or as a plain string, it should be a reference.
Disclaimer, I don't know RPG. |
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