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storing hex in metadata

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  • January 8, 2008 at 5:30 pm #49730
    Barbara Ho
    Participant

      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           : ”

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      • January 8, 2008 at 7:51 pm #63321
        Jim Kosloskey
        Participant

          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.

        • January 9, 2008 at 7:02 pm #63322
          David Barr
          Participant

            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.

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