Experimental Physics and
Industrial Control System

rolf <[email protected]> · Thu, 01 Apr 2010 04:58:16 -0700

I am trying to work with Java Channel access (JCA 2.3.2 and CAJ
1.1.5b). I may have blinders on, but the only documentation I can find
is the APS tutorial and the JCA javadoc (for JCA 2.1.2). If there is
anything else, could someone please point me to it.
My specific problem:

I have a MonitorListener, which delivers a MonitorEvent on a PV value
change.

The MonitorEvent gives me DBR, from which I want to get the new value as
a String.
My code looks like this:
DBR dbr = evt.getDBR();
DBR dbr2 = dbr.convert(DBRType.CTRL_STRING);
String[] s = ((DBRString) dbr2).getStringValue();
s[0] contains the correct value for all DBR types, with the exception of
enumerated types, where it has an empty string.

What am I doing wrong?
Thanks - rolf -
--
+-----------------------------------------+
| Rolf Keitel, Ph.D., TRIUMF              |
| Division Head, Engineering              |
| Tel: (604) 222-7453 Fax: (604)222-7307  |
| e-mail: [email protected]                  |
+-----------------------------------------+

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System