Experimental Physics and
Industrial Control System

John Hammonds <[email protected]> · Wed, 23 Nov 2011 11:07:45 -0600

Juan,


The only widgets that deal directly with waveform of chars as a long

string are the text entry/update. The reason that your code is not

working is that setValue checks type and the type created by

createIntArray (int[]) is not one of the recognized types. Integer []

is supported so if you can create this ( I'm just not that fluent in

Javascript ) then I think that you can do what you want.



I have done a test edit of the code and have come up with the following

patch that will allow passing int[] to the setValue so that your

original script should work, although I had trouble since you created an

array of 10 elements but had a longer string. This section of code is

not mine so I am going to pass this off to others in the group to accept

& commit. This will not fix your immediate issue but should make it

possible to do this in the future.


John Hammonds


diff -r a6e2537a9c5c

core/plugins/org.csstudio.utility.pv.epics/src/org/csstudio/utility/pv/epics/EPICS_V3_PV.java

---

a/core/plugins/org.csstudio.utility.pv.epics/src/org/csstudio/utility/pv/epics/EPICS_V3_PV.java

Thu Oct 27 13:54:01 2011 -0500

+++

b/core/plugins/org.csstudio.utility.pv.epics/src/org/csstudio/utility/pv/epics/EPICS_V3_PV.java

Wed Nov 23 10:58:49 2011 -0600

@@ -495,7 +495,7 @@
                 final int val = ((Integer)new_value).intValue();
                 channel_ref.getChannel().put(val);
             }
-            else if (new_value instanceof Integer [])
+            else if (new_value instanceof Integer [] )
             {
                 final Integer ival[] = (Integer [])new_value;
                 final int val[] = new int[ival.length];
@@ -503,8 +503,12 @@
                     val[i] = ival[i].intValue();
                 }
                 channel_ref.getChannel().put(val);
+            }
+            else if (new_value instanceof int[])
+            {
+                channel_ref.getChannel().put((int[])new_value);
             } else {
-                throw new Exception("Cannot handle type "
+                throw new Exception("Cannot handle data type "
                                     + new_value.getClass().getName());
             }
         }


On 11/23/2011 7:27 AM, [email protected] wrote:

Hi,

I have a waveform record setup as array of char (to support long string) and I'm trying to write a string to it via BOY Action button. I setup a "Write PV" action in the widget but the string does not get written, so perhaps long strings are not supported in BOY actions (it works for Text Inputs).

I tried a Javascript code to convert the string to an array of char via the following code:

importPackage(Packages.org.csstudio.opibuilder.scriptUtil);

var strArray = DataUtil.createIntArray(10);

var pv = widget.getPV();

var strText = "this is a test";

for(var i=0; i<strText.length; i++) {
   strArray[i] = strText.charCodeAt(i);
}
pv.setValue(strArray);

but the script throws an exception in BOY's console "Wrapped java.lang.Exception: Cannot handle type [I".

Is there any way in BOY to write a string to a waveform record as an array of char (support long strings)? I'm using SNS CSS 3.0.2 (Basic) for MacOSX.

Thanks in advance,
   Juan.

----------
Juan Carlos Guzman
Software Engineer
Australia Telescope National Facility
CSIRO Astronomy and Space Science
P.O.Box 76, Epping NSW 1710, Australia
Phone: +61 2 9372 4457
Fax: +61 2 9372 4310
Email: [email protected]<mailto:[email protected]>









--
John Hammonds
Software Services Group
APS Engineering Support Division

Argonne National Laboratory
[email protected]<mailto:[email protected]>
(630)252-5317







Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System