Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Fri, 31 Mar 2000 14:05:08 -0600

Geoff Savage wrote:
> 
> Where do I find the mapping between old (db_access.h) and new
> (dbFldTypes.h) field types?  My understanding is that the current client
> CA uses old and the CA servers use new.  Somewhere the new types in the
> server must be mapped to an old type.  For example what are the unsigned
> types mapped to.
> 
> Thanks
> 
> Geoff

The old place is in db_access.h

/*Conversion between old and new DBR types*/
extern unsigned short dbDBRoldToDBFnew[DBR_DOUBLE+1];
extern unsigned short dbDBRnewToDBRold[newDBR_ENUM+1];
#ifdef DB_TEXT_GLBLSOURCE
unsigned short dbDBRoldToDBFnew[DBR_DOUBLE+1] = {
        0, /*DBR_STRING to DBF_STRING*/
        3, /*DBR_INT to DBF_SHORT*/
        7, /*DBR_FLOAT to DBF_FLOAT*/
        9, /*DBR_ENUM to DBF_ENUM*/
        1, /*DBR_CHAR to DBF_CHAR*/
        5, /*DBR_LONG to DBF_LONG*/
        8  /*DBR_DOUBLE to DBF_DOUBLE*/
};
unsigned short dbDBRnewToDBRold[newDBR_ENUM+1] = {
        0, /*DBR_STRING to DBR_STRING*/
        4, /*DBR_CHAR to DBR_CHAR*/
        4, /*DBR_UCHAR to DBR_CHAR*/
        1, /*DBR_SHORT to DBR_SHORT*/
        5, /*DBR_USHORT to DBR_LONG*/
        5, /*DBR_LONG to DBR_LONG*/
        6, /*DBR_ULONG to DBR_DOUBLE*/
        2, /*DBR_FLOAT to DBR_FLOAT*/
        6, /*DBR_DOUBLE to DBR_DOUBLE*/
        3, /*DBR_ENUM to DBR_ENUM*/
};

Dont get too horrified :-) New was implemented in 1990. The intention was that
old would go away after a short transition period. So much for good intentions.

Marty

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System