Experimental Physics and
Industrial Control System

Brian Tieman <[email protected]> · Mon, 05 Feb 2001 14:52:56 -0600

Latif,

I routinely use JCA to get arrays without any problem (I haven't tried to put an
array yet).  Below is a brief snippet of code taken from one of my programs to show
how I do this.  If pv_name is an array pv, then pv.elementCount() should return the
number of elements in the array.  Passing this to the contructor of a DBR type
should create a DBR with the correct number of elements which can then be used to
do gets and puts.

pv = new PV (pv_name);
Ca.pendIO(10.0);

pv_value = new DBR_DBShort(pv.elementCount());

pv.get(pv_value);
Ca.pendIO(10.0);

Hope this helps.

Brian Tieman
Advanced Photon Source

Latif Albusairi wrote:

> Hello Everyone,
>
> Has anyone done any extension of JCA (Java Channel Access) to handle array puts
> and gets?
>
> It seems that the version we have cannot do that.  We are thinking of working
> on that but thought we check to see if it has been done already.
>
> Thanks,
>
> Latif Albusairi
> University of Florida

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System