storing hex in metadata

[Barbara Ho]

Hi,

I need to store hex into the metadata.  However, for some reason some hex values are not being stored properly.  It works for some but not for others.  For example, below the ODBHOSTID in the userdata is missing the ending brace eventually causing a tcl error.  

Does anybody know why? Do I need to convert the hex to decimal before storing in the metadata?

Code:

tcl>set mh [msgcreate]
message0
tcl>set hex x00

tcl>keylset userdata ODBHOSTID $hex
tcl>msgmetaset $mh USERDATA $userdata
tcl>msgdump $mh
msg: 0x3000003c
   msgType           : DATA
   msgClass          : ENGINE
   msgState          : Unknown: 0 (0)
   msgPriority       : 5120
   msgRecoveryDbState: 1
   msgFlags          : 0x2
   msgMid            : [0.0.0]
   msgSrcMid         : midNULL
   msgSrcMidGroup    : midNULL
   msgOrigSrcThread  :
   msgOrigDestThread :
   msgSrcThread      :
   msgDestThread     :
   msgXlateThread    :
   msgSkipXlate      : 0
   msgSepChars       :
   msgNumRetries     : 0
   msgGroupId        : 0
   msgDriverControl  :
   msgRecordFormat   :
   msgRoutes         :
   msgUserData       : {ODBHOSTID
   msgStaticIsDirty  : 0
   msgVariableIsDirty: 1
   msgTimeStartIb    : 1199813173.003
   msgTimeStartOb    : 1199813173.003
   msgTimeCurQueStart: 0.000
   msgTimeTotalQue   : 0.000
   msgTimeRecovery   : 1199813173.003
   msgEoConfig       : 0x0
   msgData (BO)      : 0x30000120
   message           : ”

Topic

[Jim Kosloskey]

Barbara,

I think hex 00 is a no-no in Tcl.

It looks like in your post you are using hex 00.

email: jim.kosloskey@jim-kosloskey.com 29+ years Cloverleaf, 59 years IT - old fart.

[David Barr]

You probably shouldn’t be putting unprintable characters in the metadata.  If you just want to put hex values in the USERDATA, then why not just use “00” instead of “x00”?  The x sequence is supposed to be used to translate hex numbers into the corresponding ascii character.  After you assign x00 to a variable, the variable will not contain “hex data”, it will contain an ascii character.

[Author]

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