/**
 * This class shows how to create an instance of the
 */

import com.hp.hpl.jena.daml.*;
import com.hp.hpl.jena.daml.common.DAMLModelImpl;
import com.hp.hpl.mesa.rdf.jena.vocabulary.*;
import com.hp.hpl.mesa.rdf.jena.model.*;

import java.io.*;
import java.util.Iterator;

public class GEMOntology3 {
    String uri="http://www.servogrid.org/schemas/GEMOntology";
    String namespace=uri+"#";
    DAMLModel model,instanceModel;
    DAMLInstance computeResInst1,computeResInst2;
    DAMLInstance gemCodeInst1,gemCodeInst2,gemCodeInst3;

    DAMLDatatype xsdString;

    public GEMOntology3(String filename) throws RDFException, IOException{
	//Create the model
	model=new DAMLModelImpl();
	model.read(new FileReader(filename),uri);
	
	//Create the classes we need.
	DAMLClass computeResources
	    =(DAMLClass)model.getDAMLValue(uri+"#ComputeResources");
	DAMLClass gemCode
	    =(DAMLClass)model.getDAMLValue(uri+"#GEMCode");
	
	//Create an instance model.
	instanceModel=new DAMLModelImpl();
	
	//Create a Compute Resource instance
	computeResInst1
	    =instanceModel.createDAMLInstance(computeResources,null);
	computeResInst1.addProperty(RDF.value,"Grids");

	computeResInst2
	    =instanceModel.createDAMLInstance(computeResources,null);
	computeResInst2.addProperty(RDF.value,"Danube");

	//Create a GEMCode instance and assign some standard
	//RDF values
	gemCodeInst1=instanceModel.createDAMLInstance(gemCode,null);
	gemCodeInst1.addProperty(RDF.value,"Disloc");

	gemCodeInst2=instanceModel.createDAMLInstance(gemCode,null);
	gemCodeInst2.addProperty(RDF.value,"Simplex");

	gemCodeInst3=instanceModel.createDAMLInstance(gemCode,null);
	gemCodeInst3.addProperty(RDF.value,"GMT");

	//Get some properties from the ontology
	DAMLProperty hasCode
	    =(DAMLProperty)model.getDAMLValue(uri+"#"+"hasCode");
	computeResInst1.accessProperty(hasCode).add(gemCodeInst1);
	computeResInst1.accessProperty(hasCode).add(gemCodeInst2);
	computeResInst2.accessProperty(hasCode).add(gemCodeInst3);

	//Write it out
	RDFWriter abbrev=instanceModel.getWriter("RDF/XML-ABBREV");
	abbrev.setNsPrefix("gem",uri+"#");
	abbrev.write(instanceModel,new OutputStreamWriter(System.out),"HTTP://foobar");
	
    }
    
    public void iterate(){
	Iterator iter=model.listDAMLClasses();
	while(iter.hasNext()){
	    DAMLClass c=(DAMLClass)iter.next();
	    System.out.println(c.toString());
	}
    }
    
    public void dump(OutputStream out) throws RDFException {
        System.out.println("RDF/XML\n");
        model.write(new PrintWriter(out),"RDF/XML-ABBREV",uri);
    }
    
    public static void main(String[] args) throws Exception{
	GEMOntology3 gd3=new GEMOntology3(args[0]);
	//	gd3.dump(System.out);
    }
}