Hi Josep,
The best way to add a parameter at runtime is to
execute a MoMLChangeRequest. See page 237 of
http://www.eecs.berkeley.edu/Pubs/TechRpts/2008/EECS-2008-28.html
Below is a small example that parses an xml file, adds a parameter and exports
the resulting model.
bash-3.2$ cat AddParameter.java
import ptolemy.moml.MoMLChangeRequest;
import ptolemy.moml.MoMLParser;
import ptolemy.actor.TypedCompositeActor;
public class AddParameter {
public static void main(String [] args) throws Exception {
// See ptolemy.moml.MoMLSimpleApplication for complete details
MoMLParser parser = new MoMLParser();
TypedCompositeActor toplevel = (TypedCompositeActor)
parser.parseFile(args[0]);
MoMLChangeRequest change = new MoMLChangeRequest(null, toplevel,
"<property name=\"myProperty\"
class=\"ptolemy.data.expr.Parameter\" value=\"myValue\"/>");
change.execute();
System.out.println(toplevel.exportMoML());
}
}bash-3.2$ javac -classpath $PTII AddParameter.java
bash-3.2$ java -classpath $PTII AddParameter
~/src/kepler/ptolemy/src/ptolemy/moml/demo/test.xml
<?xml version="1.0" standalone="no"?>
<!DOCTYPE entity PUBLIC "-//UC Berkeley//DTD MoML 1//EN"
"http://ptolemy.eecs.berkeley.edu/xml/dtd/MoML_1.dtd";>
<entity name="test" class="ptolemy.actor.TypedCompositeActor">
<property name="_createdBy"
class="ptolemy.kernel.attributes.VersionAttribute" value="8.1.devel">
</property>
<property name="director" class="ptolemy.domains.sdf.kernel.SDFDirector">
</property>
<property name="myProperty" class="ptolemy.data.expr.Parameter"
value="myValue">
</property>
<entity name="ramp" class="ptolemy.actor.lib.Ramp">
</entity>
<entity name="plot" class="ptolemy.actor.lib.gui.SequencePlotter">
<property name="_windowProperties"
class="ptolemy.actor.gui.WindowPropertiesAttribute">
</property>
<property name="_plotSize" class="ptolemy.actor.gui.SizeAttribute">
</property>
</entity>
<relation name="r" class="ptolemy.actor.TypedIORelation">
</relation>
<link port="ramp.output" relation="r"/>
<link port="plot.input" relation="r"/>
</entity>
bash-3.2$
_Christopher
On 5/20/10 9:42 AM, ben leinfelder wrote:
> The webservice code is in the webservice module
> http://code.kepler-project.org/code/kepler/trunk/modules/webservice/
> I'm not sure exactly which class it is that does all the work, but there's a
> good introduction/help file in the module.
> -ben
>
> On May 20, 2010, at 8:56 AM, Josep Morer Mu?oz wrote:
>
>> Yes, I am executing using command line inside Java but I want independency
>> between my application and the operating system where Kepler is running.
>>
>> Thanks Ben, sounds interesting. Where can I find this workflow execution web
>> service for looking into it? I assume that it allow to set a parameter value
>> different than workflow default ones (as
>> command line execution).
>>
>>
>>
>> 2010/5/20 ben leinfelder <leinfelder at nceas.ucsb.edu>
>> Josep -
>> I believe you can accomplish your first goal by invoking the "command line"
>> as an external process from your Java code. The workflow execution web
>> service that Jing Tao helped develop essentially
>> does exactly what you are aiming to do: load a KAR, execute the workflow in
>> it, get the result KAR when execution finishes.
>> For your second request, you'd probably have to dig much deeper into the
>> Kepler/ptolemy code to add a parameter to the MOML after it was loaded.
>> Perhaps the folks more familiar with ptolemy can
>> point you in a good direction.
>> -ben
>>
>>
>> On May 20, 2010, at 3:16 AM, Josep Morer Mu?oz wrote:
>>
>> Hi all,
>>
>> I want know Kepler at Java Level to execute it inside a java program. I have
>> build all jar to use them into a java application. It will be useful if
>> someone give me an overview (just say me which
>> java classes that I should take a look) for using Kepler at Java code level.
>> Can you give me some orientation about:
>>
>> - Given a KAR Path, extract and execute the workflow and get result KAR as
>> the same way as command line (or clicking Play Button in the GUI). It will
>> be useful, I can change the input parameters
>> value using java code before execute it. Which classes have I take a look?
>> - Add an input parameter to the workflow when the model is loaded into the
>> memory. In other words, add a new parameter which is not previously in the
>> workflow XML.
>>
>> Congratulations for your work and thanks for your help.
>>
>> --
>> Josep
>> _______________________________________________
>> Kepler-users mailing list
>> Kepler-users at kepler-project.org
>> http://mercury.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users
>>
>>
>>
>>
>> --
>> Josep
>
> _______________________________________________
> Kepler-users mailing list
> Kepler-users at kepler-project.org
> http://mercury.nceas.ucsb.edu/kepler/mailman/listinfo/kepler-users
--
Christopher Brooks, PMP University of California
CHESS Executive Director US Mail: 337 Cory Hall
Programmer/Analyst CHESS/Ptolemy/Trust Berkeley, CA 94720-1774
ph: 510.643.9841 fax:510.642.2718 (Office: 545Q Cory)
home: (F-Tu) 707.665.0131 cell: 707.332.0670
