Thread: JADE---Sending an Concept including an concept

Hey Guys,

I spend a few hours searching for an solution of my Problem. I'm now posting it here because I didn't found any solution which solved my Problem. So i hope you can help me.

The situation is the following:

I use Jade an I'm able to send messages. Now I try to send a Message with not only integers or strings as content but with another concept as content.

Here I want to send a Message of the Media, which contains any number of Trackdata.

(I left out the import and other blabla stuff cause i is working)

In my Ontology I define:

add(new ConceptSchema(MEDIAINFO), Mediainfo.class);
add(new ConceptSchema(TRACKDATA), Trackdata.class);
 
//Mediainfo
cs = (ConceptSchema) getSchema(MEDIAINFO);
cs.add(CURRENTTRACK, (PrimitiveSchema) getSchema(BasicOntology.INTEGER), ObjectSchema.MANDATORY);
cs.add(TRACKINFOS, (ConceptSchema) getSchema(TRACKDATA), 1 , ObjectSchema.UNLIMITED);
 
//Trackdata
cs = (ConceptSchema) getSchema(TRACKDATA);
cs.add(TRACKNUMBER, (PrimitiveSchema) getSchema(BasicOntology.INTEGER), ObjectSchema.MANDATORY);
cs.add(TRACKTYPE, (PrimitiveSchema) getSchema(BasicOntology.STRING), ObjectSchema.MANDATORY);
cs.add(TRACKPLAYED, (PrimitiveSchema) getSchema(BasicOntology.BOOLEAN), ObjectSchema.MANDATORY);

Now in the Mediainfo class I define:

public class Mediainfo implements SystemVocabulary, Concept{
 
        private Integer currentrack;
        private ArrayList<Trackdata> trackinfos;
 
 
        public void printSysteminfo(){
 
                System.out.println("\n<<<===== Systeminfo ======>>>\n"
                                + "\n\t Current Track: " + currenttrack
                                + "\n\t Infos of the Trackss: " + trackinfos
                                + "\n\n<<<===============================>>>\n"
                                );
        }
 
        public Integer getCurrenttrack() {
                return currenttrack;
        }
        public void setCurrenttrack (Integer currenttrack) {
                this.currenttrack = currenttrack;
        }
 
        public ArrayList<Trackdata> getTrackinfos() {
                return trackinfos;
        }
        public void setTrackinfos (ArrayList<Trackdata> trackinfos) {
                this.trackinfos = trackinfos;
        }
}

And last but not least in an Agent I want to send a Message (the Trackdata class doesn't make any Problems i think):

protected Mediainfo mi;
protected Trackdata td;
 
mi = new Systeminfo();
mi.setCurrenttrack(2);
ArrayList<Trackdata> track_data = new ArrayList<Trackdata>();
td = new Trackdata();
td.setTracknumber(1);
td.setTracktype("rock");
td.setTrackplayed(true);
track_data.add(td);
td = new Trackdata();
td.setTracknumber(2);
td.setTracktype("pop");
td.setTrackplayed(false);
track_data.add(td);
mi.setTrackinfos(track_data);
this.sendMessage(ACLMessage.INFORM,getAIDofService(MANAGER_SERVICE),mi);

When I run my Programm I get the following error:

jade.content.onto.OntologyException: No schema found for class java.util.ArrayList
at jade.content.onto.Ontology.fromObject(Ontology.jav a:433)
at jade.content.onto.Ontology.externalize(Ontology.ja va:698)
at jade.content.onto.Ontology.fromObject(Ontology.jav a:645)
at jade.content.onto.Ontology.fromObject(Ontology.jav a:654)
at jade.content.onto.Ontology.fromObject(Ontology.jav a:427)
at jade.content.onto.basic.Action.externalise(Action. java:71)
at jade.content.onto.BasicOntology.fromObject(BasicOn tology.java:409)
at jade.content.onto.Ontology.fromObject(Ontology.jav a:654)
at jade.content.onto.Ontology.fromObject(Ontology.jav a:654)
at jade.content.onto.Ontology.fromObject(Ontology.jav a:427)
at jade.content.ContentManager.fillContent(ContentMan ager.java:205)
at MAINAgents.MasterAgent.sendMessage(MasterAgent.jav a:143)
at GUIAgents.GUIAgent.setup(GUIAgent.java:69)
at jade.core.Agent$ActiveLifeCycle.init(Agent.java:15 22)
at jade.core.Agent.run(Agent.java:1468)
at java.lang.Thread.run(Thread.java:662)


Can anybody explain to me why I get this error and how I can solve the problem?

Regrads
Dampfi

No one knows a solution?

Hi Dampfi,

Now i also got some task to send the media from one agent to other agents. I am completely new to this Jade platform. If you the solution or the programs which sends the Media. Can you please share to me that would be great help to me.

Regards,
Gokul