package server;

import java.util.Iterator;

import com.hp.hpl.jena.query.Query;
import com.hp.hpl.jena.query.QueryExecution;
import com.hp.hpl.jena.query.QueryExecutionFactory;
import com.hp.hpl.jena.query.QueryFactory;
import com.hp.hpl.jena.query.QuerySolution;
import com.hp.hpl.jena.query.ResultSet;
import com.hp.hpl.jena.rdf.model.Literal;
import com.hp.hpl.jena.rdf.model.Model;

import jade.core.behaviours.OneShotBehaviour;

public class TraderAgentBehaviourFSM_ExecuteBehaviour extends OneShotBehaviour
{
	int transition = 2;

	public void action()
	{
		TraderAgent myAgentTA = (TraderAgent)myAgent;
		String queryMessage = myAgentTA.getLastQuery();
		
		System.out.println("\n<Trader-Agent> The complete query is: \n" + queryMessage);
		Model m = myAgentTA.getMem().getModel();
		Query query = QueryFactory.create(queryMessage);
		QueryExecution qexec = QueryExecutionFactory.create(query,m);
		
		try
		{
			ResultSet results = qexec.execSelect();
			while(results.hasNext())
			{
				QuerySolution soln = results.nextSolution();
				System.out.println("\n<Trader-Agent> The 'QuerySolution' is: " + soln.toString());
				
				Iterator it = soln.varNames();
				System.out.println("\n<Trader-Agent> The variables contained: ");
				while(it.hasNext())
				{
					String varName = (String)it.next();
					System.out.println(" --> " + varName);					
				}
				
				Literal l = soln.getLiteral("id");
				System.out.println("\n<Trader-Agent> Query Result: " + l.getString());
				myAgentTA.setLastResult(l.getString());
			}
		}
		finally{qexec.close();}
	}
	
	public int onEnd()
	{
		return transition;
	}
}