Valid syntax

 

Your input file for the utility must conform to the C language syntax. If you are unfamiliar with C, refer to Example of valid syntax for the input data set.

In addition, be aware of the following rules:

• typedef is recognized only before the struct keyword.

• A structure tag is required on your structure declarations.

• We can use empty square brackets [ ] to denote a variable length array or string at the end of a message.

• Multidimensional arrays and arrays of strings are not supported.

• The following additional data types are recognized:

  • MQBOOL

  • MQBYTE

  • MQCHAR

  • MQFLOAT32

  • MQFLOAT64

  • MQSHORT

  • MQLONG

  • MQINT8

  • MQUINT8

  • MQINT16

  • MQUINT16

  • MQINT32

  • MQUINT32

  • MQINT64

  • MQUINT64

  MQCHAR fields are code page converted, but MQBYTE, MQINT8 and MQUINT8 are left untouched. If the encoding is different, MQSHORT, MQLONG, MQINT16, MQUINT16, MQINT32, MQUINT32, MQINT64, MQUINT64, MQFLOAT32, MQFLOAT64 and MQBOOL are converted accordingly.

• Do not use the following:

  • double

  • pointers

  • bit-fields

  This is because the utility for creating conversion-exit code does not provide the facility to convert these data types. To overcome this, you can write your own routines and call them from the exit.

Other points to note:

• Do not use sequence numbers in the input data set.

• If there are fields for which you want to provide your own conversion routines, declare them as MQBYTE, and then replace the generated CMQXCFBA macros with your own conversion code.

• Example of valid syntax for the input data set
  

 

Parent topic:

Writing a data-conversion exit program

fg13060_